ALSO PUBLISHED ONLINE: JUNE2016 www.highfrequencyelectronics.com Design Guidelines for Metallic Enclosures for RF Circuits IN THIS ISSUE: Harmonic Balance Simulation Algorithm: The Basics Featured Products New Products Guest Editorial: Orwill Hawkins on the Value of Attending the IMS Show IMS Product Wrap-Up Ideas for today’s engineers: Analog · Digital · RF · Microwave · mm-wave · Lightwave DISTRIBUTION AND MANUFACTURER’S REPRESENTATIVES DISTRIBUTION AND MANUFACTURER’S REPRESENTATIVES C.W. SWIFT SWIFT& &Associates, Associates,Inc. Inc. C.W. C.W. SWIFT & Associates distributes our extensive inventory of C.W. SWIFT & Associates distributes our extensive inventory of SGMCMicrowave’s Microwave’squality qualityproducts products OFF THE SHELF! SGMC ...... OFF THE SHELF! 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GHz Microwave Global Models™ Available Meet the magic number for two-watt temperature-variable attenuators Push the limits of frequency without sacrificing performance. Powerfilm surface-mount attenuators from Inmet, part of API Technologies Corp., vary with temperature and are the perfect balance of price, power, and dependability. They offer the flattest broadband performance of their kind and allow you to create automatic- and passive-link margin compensation on a wider variety of transmit and receive chain circuit applications. ■ -0.005 dB/dB/°C shift models available from stock Save money and space by throwing out your complicated gain-control circuitry and required bias and control voltages. 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Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com 506 rev F ALSO PUBLISHED ONLINE AT: www.highfrequencyelectronics.com 22 30 16 Feature Article Feature Article Featured Products Design Guidelines for Metallic Enclosures for RF Circuits By Bill Garner, Steve Rosasco, Larry Burgess An important consideration is the effect the enclosure has on RF circuit performance. 4 JUNE2016 Vol. 15 No. 6 Harmonic Balance Simulation Algorithm: The Basics By Ain Rehman Explaining the HB technique as it is applied to circuit simulation. Including Guerrilla RF, Withwave, SRTechnology, Innertron, Triad RF, Knowles Capacitors, and more. 38 60 6 Product Highlights Guest Editorial Editorial Including Richardson Electronics, Spectrum Elektrotechnic, MiniCircuits, Keysight Technologies, Rohde & Schwarz, Exodus Advanced Communications, and more. LadyBug Technologies’ Orwill Hawkins on the value of attending IMS. Scott Spencer on the game-changing potential of graphene. 6 Editorial 12 In the News 16 Featured Products 8 Meetings & Events 38 Product Highlights 64 Advertiser Index High Frequency Electronics Editorial Vol. 15 No. 6 June 2016 Publisher Scott Spencer scott@highfrequencyelectronics.com Tel: 603-472-8261 Associate Publisher/Managing Editor Tim Burkhard tim@highfrequencyelectronics.com Tel: 707-544-9977 Senior Technical Editor Tom Perkins tom@highfrequencyelectronics.com Tel: 603-472-8261 Vice President, Sales Gary Rhodes grhodes@highfrequencyelectronics.com Tel: 631-274-9530 Editorial Advisors: Ali Abedi, Ph.D. Candice Brittain Paul Carr, Ph.D. Alen Fezjuli Roland Gilbert, Ph.D. Sherry Hess Thomas Lambalot John Morelli Karen Panetta, Ph.D. Jeffrey Pawlan, Ph.D. Business Office Summit Technical Media, LLC One Hardy Road, Ste. 203 PO Box 10621 Bedford, NH 03110 Also Published Online at www.highfrequencyelectronics.com Subscription Services Sue Ackerman Tel: 651-292-0629 circulation@highfrequencyelectronics.com Send subscription inquiries and address changes to the above contact person. You can send them by mail to the Business Office address above. Our Environmental Commitment High Frequency Electronics is printed on paper produced using sustainable forestry practices, certified by the Program for the Endorsement of Forest Certification (PEFC™), www.pefc.org Copyright © 2016, Summit Technical Media, LLC 6 High Frequency Electronics Graphene: Game-Changing Technology Potential Scott L. Spencer Publisher What if there were a material that served as an excellent conductor of heat and electricity, was the lightest and strongest material available, was just one atom thick, and could create a seal not even helium could pass through? Thanks to a 2004 Nobel Prize-winning discovery at the University of Manchester, by Professors Andre Geim and Kostya Novoselov, there is. Their discovery was that of a revolutionary and relatively new material: graphene. Although scientists knew that one-atom-thick, 2D crystal graphene existed, no one had determined how to extract it from graphite. While removing some flakes from a lump of bulk graphite, researchers observed that the flakes varied in thickness. By separating the graphite fragments recurrently they were able to obtain flakes just one atom thick. For the first time they had isolated graphene, the world’s first 2D material. Graphene is a single atomic layer of carbon atoms bound in a hexagonal network. Think atomic scale chicken wire made of carbon atoms and their bonds. Notwithstanding mass manufacturing and defect-control challenges, graphene promises to dramatically change semiconductor, sensor, and display technology, and could also lead to discoveries in quantum physics research. Materials Drive Innovation Throughout history, advances in materials technology have driven innovation. Graphene could likely be the next disruptive force enabling outcomes never before seen nor imagined. We might be on the brink of the next alteration in this type of technology, enabling products and functions we never believed possible. There are many areas of technology where graphene might play a future role. For example, it can be used as a coating to improve touchscreens for mobile devices. It has the potential to make the circuitry for computers exceedingly fast. Graphene is already being planned to be used on a wristwearable smart phone. The Chinese company Moxi is developing a flexible phone using graphene to create the screens. Graphene’s pliable nature and good conducting characteristics give it advantages over the brittle Indium-tin oxide commonly used for touchscreen applications. This makes graphenebased circuits desirable for use in flexible and wearable electronics. Even though the isolation of graphene is a relatively recent event, university researchers and financial speculators are investing heavily in the prospect of graphene revolutionizing the electronics industry. A few graphene- based electronic devices are currently on the market. They include graphene field effect transistors (GFETs), ultra-capacitors, security tags, biosensors, cables, and more. Now comes word from the Moscow Institute of Physics and Technology (MIPT) that scientists have designed a graphene-based transistor featuring ultra-low power consumption, and the potential to dramatically increase the clock speed of processors. Operating on less power than standard transistors, graphene “tunnel transistors” allow electrons to pass through the energy barrier by quantum tunneling. Until now, the problem has been that the current coming through is too small to be practical. Now, the MIPT scientists have found a way to use graphene to increase the tunneling current. Thus the transistor requires a much smaller voltage, like 150 mV compared to 500 mV in equivalent silicon transistors. Less energy equates to less heat and lower junction temperatures, affording significant increases in clock speeds—perhaps even to 100 GHz and higher. IMS2017 Takes Hawaiian Vacation By most accounts, IMS2016 was a success. Technical paper presentations, workshops, and tutorials were well attended. With the exception of a poorly timed fire alarm, the plenary sessions went well with excellent keynote presentations. The exhibition floor was active and there was a large group of new exhibitors, mostly from Asia. As the week ended I heard some disappointment expressed surrounding the location of IMS2017: Honolulu, Hawaii. The concerns came mostly from the companies that support the event through the exhibition. The significant cost increase to transport personnel and displays to a place where most companies would not normally send a salesperson is a legitimate concern for those with tight budgets. In 2007 some participants were told that attendees from Asia and the Pacific Rim would prove Honolulu a worthy venue. If you were there in 2007, you know that did not happen. My guess is that conference registration will be down for Hawaii, and that what are normally 30- and 40-foot exhibition booths will shrink down to 10 or 20 feet instead. Like us at HFE, most will embrace the event and look for the positives. Still others will wait it out until 2018, when the industry’s most important event returns to Philadelphia. HFE Powerful Multipath/Link Emulator Multipath Rayleigh & Rician Fading Unmanned Arial Vehicle (UAV) testing Sophisticated Satellite link emulation Mobile Comm’s on the move testing Test solutions for .... WIN-T MUOS JTRS IRIS MET Hz h 0 M idt 5 2 dw n ba - warfare information networks, tactical - mobile user objective system - Joint Tactical Radio System - Internet routing in space - Modernization Enterprise Terminal Software showing mobile link setup dBmCorp, Inc 32A Spruce Street Tel (201) 677-0008 RF Test Equipment for Wireless Communications Oakland, NJ 07436 Fax (201) 677-9444 www.dbmcorp.com Get info at www.HFeLink.com Meetings and Events Conferences & Meetings IEEE MTT-S International Microwave Workshop Series on “Advanced Materials and Processes for RF and THz Applications” Jul 20 - 22, 2016 Chengdu (China) International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications Jul 27 - 29, 2016 Beijing http://nemo-ieee.org/ 2016 IEEE International Symposium on Phased Array Systems & Technologies Oct 18 - 21, 2016 Waltham, MA http://www.array2016.org/ IEEE MTT-S Latin America Microwave Conference Dec 08 - 10, 2016 Puerto Vallarta lamc-ieee.org Company-Sponsored Training & Tools NIWeek August 1 - 4, 2016 Austin, TX http://www.ni.com/niweek/ Analog Devices Training, tutorials and seminars. http://www.analog.com/en/training-tutorials-seminars/resources/index.html International Symposium on Radio-Frequency Integration Technology Aug 24 - 26, 2016 Taipei http://www.rfit2016.org/ NI AWR On-site and online training, and open training courses on design software. http://www.awrcorp.com/news/trainings EDI CON 2016 Sep 20 - 22, 2016 Boston ediconusa.com 2016 Bipolar/BiCMOS Circuits Technology Meeting Sep 25 - 27, 2016 New Brunswick, NJ http://ieee-bctm.org/ National Instruments LabVIEW Core 1 Online http://sine.ni.com/tacs/app/fp/p/ap/ov/pg/1/ LabVIEW Core 2 Online http://sine.ni.com/tacs/app/fp/p/ap/ov/pg/1/ Object-Oriented Design and Programming in LabVIEW Online http://sine.ni.com/tacs/app/fp/p/ap/ov/pg/1/ Free, online LabVIEW training for students and teachers. http://sine.ni.com/nievents/app/results/p/country/ us/type/webcasts/ HFE’s July Issue Connectors Antennas Passives CONTACT YOUR SALES REP TODAY! 8 High Frequency Electronics Tunable Low Noise Oscillator Solutions 600 MHz to 40 GHz! MLTO-Series. Permanent magnet designs available covering the 2 to 16 GHz frequency range. Units provide +8 dBm power levels and operate without a heater. TO-8 packages are provided with three height variations available depending on frequency coverage. MLMB/MLMY-Series. Electromagnetic PCB mount and Mini designs are available covering 700 MHz to 12 GHz frequency range. Phase noise of -130 dBc/Hz is provided with output power levels to +16 dBm. Commercial and extended temperature units are available throughout the product line. MLOS-Series. Units cover 600 MHz to 40 GHz in bands. Standard 1.75” or 2” cylinder packages are provided. Millimeter wave units are available in wide band configurations covering 18 to 26.5 GHz, 18 to 40 GHz and 26.5 to 40 GHz. Commercial and extended temperature units are available throughout the product line. MLSMO-Series. Permanent magnet based surface mount units are available covering the 2 to 16 GHz frequency range. A test fixture is available for evaluation and test. Units provide very low phase noise of -128 dBc/Hz at 10 GHz. Low prime power inputs of +8 Vdc and -5 Vdc are utilized and no heater power is required. MLPB/MLMY-Series. Permanent MLX-Series. Electromagnetic units that cover 6 to 22 GHz. Extremely low noise versions providing phase noise performance between -125 dBc/Hz to -130 dBc/Hz @ 100 kHz offset. Power output levels of +14 and +15 dBm are standard. Package sizes of 1” cube, 1.25” cube and 1.75” cylinder gives the user flexibility in mechanical design. Commercial and extended temperature range units are available. All standard driver interfaces are available from analog, 12 bit TTL and 16 Bit serial. Magnet based PCB mount and Mini designs are available covering the 2 to 20 GHz frequency range. Output power levels up to +16dBm are provided along with low phase noise between -124 dBc/Hz to -130 dBc/Hz depending on frequency. Commercial and extended temperature units are available throughout the product line. See our complete line of low noise frequency synthesizers www.microlambdawireless.com MLSP-series Synthesizers 600 MHz to 20 GHZ MLSN-series Synthesizers 2 to 16 GHz MLSW-series Synthesizers 600 MHz to 16 GHz MLBS-series Test Box 2 to 16 GHz “Look to the leader in YIG-Technology” 46515 Landing Parkway, Fremont CA 94538 • (510) 770-9221 • sales@microlambdawireless.com Market Reports Macrocell Base Station Spending Falls Short of $50 Billion for Second Year in a Row ABI Research forecasts 2016 macrocell base station spending will decline for the second year in a row, reaching US$48 billion, as operators shift CAPEX to network densification. Worldwide base station spending will decline by two percent in 2016 and then by double digits each year thereafter. “The base station spending decline means that CAPEX is shifting to less capital intensive solutions, including small cells, DAS, and Wi-Fi for densification,” says Nick Marshall, Research Director at ABI Research. “While India will dominate spending in AsiaPacific over the next few years, North America’s 4G coverage is virtually complete as the region prepares for 5G along with Japan and South Korea.” The Asia-Pacific region is still the largest base station market in 2016, but down from its 2015 peak as China completes its LTE rollout. North America will see the biggest declines as deployments for LTE coverage diminish. In 2015, Ericsson led the overall base station market, followed by Huawei, Nokia Networks, AlcatelLucent, and ZTE. But those same companies will face challenges in the months ahead. “As the 5G technology cycle gets underway, base station vendors including Ericsson, Huawei, and Nokia will face the challenge of replacing lost revenue in the short term,” concludes Marshall. “While the early commercialization of 5G will certainly help to replace this lost revenue, it is not until well after 2020 that this contribution becomes meaningful. Base station vendors must diversity to make up for this shortfall.” —ABI Research abiresearch.com IoT 2016 Merger & Acquisition Activity Off to Fast Start Strategy Analytics finds that there were nearly two dozen major mergers and acquisitions in the Internet of Things (IoT) and related market segments including Big Data Analytics, connectivity and wireless markets in the first four months of 2016. Research indicates the 2016 M&A activity may eclipse the pace set in 2015, which was a record breaking year both in terms of the number and value of acquisitions. “At the end of 2010, there were a scant one dozen acquisitions in the then fledgling IoT market. By the end of 2015, SA estimates there were 81 mergers and acquisitions; that is a nearly seven-fold increase in five years,” noted Laura DiDio, SA’s Director of IoT Research and author of the Report. “Also notable is the increase in the worth of the companies being acquired,” said Andrew Brown, Executive Director of the IoT Strategies Service. While vendors are 10 High Frequency Electronics still acquiring companies for $50, $100 and $200 million (US dollars), billion dollar acquisitions, such as Cisco’s $1.4 billion purchase of Jasper Technologies IoT services’ platform in February and even multi-billion deals – are no longer rarities. Strategy Analytics M&A Report indicates the most desirable acquisition targets are companies whose core competencies revolve around analytics, security, connectivity platform capabilities and services. And within those product categories IoT vendors are especially eager to acquire companies in hot vertical segments including: Automotive, Consumer wearables, Healthcare, Industrial IoT (IIoT), Manufacturing, Retail, Smart Home, Transportation and Weather. —Strategy Analytics strategyanalytics.com IoT to Account for 28% of Wireless Connectivity IC Market by 2021 Smart home, beacon, wearable, and other nascent IoT applications including energy management and smart cities continue to propel the wireless IoT connectivity market forward. The market’s trend toward multi-protocol connectivity IC adoption will ease development time, boost scale, and reduce complexity and cost for manufacturers across these different sectors in the years ahead. “2015 witnessed a growing trend toward the development of multiprotocol connectivity SoCs for the IoT, some of which support both Bluetooth Smart and 802.15.4,” says Andrew Zignani, Industry Analyst at ABI Research. “Devices that incorporate multiprotocol chipsets will be more futureproof. While a product might utilize Bluetooth in the short term, a device manufacturer may want to switch to Thread in the future or have the ability to talk to multiple connectivity protocols once deployed.” Moving forward, it might not be a case of either Bluetooth or ZigBee or Thread, but rather utilizing a combination of these technologies in a single device. The recently announced acquisition of GreenPeak by Qorvo and the resulting expansion in their RF portfolio with low-power SoCs, 802.15.4, and Bluetooth solutions, illustrates the growing importance of both of these technologies for the IoT. ABI Research also expects to see a growing presence of smart home hubs that incorporate multiple connectivity solutions such as Wi-Fi, Bluetooth Smart, Z-Wave and 802.15.4 (ZigBee/Thread). These solutions will have a significant role to play in the development and consolidation of wireless connectivity solutions for the smart home. These hubs are already being already offered by the likes of Google, Samsung, and Huawei. —ABI Research abiresearch.com There’s Nothing Common About It Our new online tool lets you search and compare hundreds of common mode EMI filter options in just seconds! When you have an EMI problem, you don’t have time to sift through stacks of datasheets. You need a solution now, and our new Common Mode Choke Finder will lead you to it quickly and easily. Search by impedance, attenuation or inductance over your exact frequency range. Your results appear in a clear, sortable table with complete performance specs, product photos, pricing and more. Best of all, you can compare the impedance/ attenuation of up to six filters on the same graph, making direct product comparisons much easier. When you’ve selected your filters, just click to get free samples. Get started at coilcraft.com/CMCfinder. ® WWW.COILCRAFT.COM In the News Accelerating Complex Computer Simulations: Thinking Beyond Ones and Zeros Whether designed to predict the spread of an epidemic, understand the potential impacts of climate change, or model the acoustical signature of a newly designed ship hull, computer simulations are an essential tool of scientific discovery. By using mathematical models that capture the complex physical phenomena of the real world, scientists and engineers can validate theories and explore system dynamics that are too costly to test experimentally and too complicated to analyze theoretically. Over the past half century, as supercomputers got faster and more powerful, such simulations became ever more accurate and useful. But in recent years even the best computer architectures haven’t been able to keep up with demand for the kind of simulation processing power needed to handle exceedingly complex design optimization and related problems. To address this challenge, DARPA has announced its Accelerated Computation for Efficient Scientific Simulation (ACCESS) program. The program builds on inputs from a request for information issued in 2015 for novel hybrid computing concepts. A standard computer cluster is equipped with multiple central processing units (CPUs), each programmed to tackle a particular piece of a problem. This conventional design is not suited to solve the kinds of equations at the core of large-scale simulations, such as those describing complex fluid dynamics and plasmas. These critical equations, known as partial differential equations, describe fundamental physical principles like motion, diffusion, and equilibrium. But because they involve dynamics over a large range of physical parameters and spatial scales relating to the problems of interest, they do not lend themselves to being easily broken up and solved in discrete pieces by individual CPUs. A processor specially designed for such systems of equations may enable revolutionary new simulation capabilities for design, prediction, and discovery. But what might that processor look like? 12 High Frequency Electronics “Supercomputers today face bottlenecks in converting physical systems into and out of binary form. We are going to explore if there are fundamentally better ways to solve multi-scale partial differential equations that describe complex physical systems, such as those encountered in plasmas and fluid dynamics,” said Vincent Tang, DARPA program manager. “The goal is to develop new hybrid computational architectures for scalable approaches to simulating these complex systems, in order to allow the equivalent of petaflops or more of computational power to be effectively applied across a simulation, all on a benchtop form factor.” As part of the new program, DARPA is interested in pursuing the somewhat counterintuitive premise that “old fashioned” analog approaches may be part of the solution. Analog computers, which solve equations by manipulating continuously changing values instead of discrete measurements, have been around for more than a century. But in the 1950s and 1960s, as transistor-based digital computers proved more efficient for most kinds of problems, analog methods fell into disuse. They haven’t been forgotten however. And their potential to excel at dynamical problems too challenging for today’s digital processors may today be bolstered by other recent breakthroughs, including advances in microelectromechanical systems, optical engineering, microfluidics, metamaterials and even approaches to using DNA as a computational platform. It is conceivable, according to Tang, that novel computational substrates could vastly exceed the performance of modern CPUs for certain specialized problems, if they can be scaled and integrated into modern computer architectures. “Today, we need a room full of supercomputers to handle the simulations, which can take weeks or months for results,” Tang said. “With ACCESS, we’re aiming for a benchtop set-up that can solve large problems of complex physical systems in a matter of hours.” * * * GXV-T Revs up Research into Nimbler, Faster, Smarter Armored Ground Vehicles Today’s ground-based armored fighting vehicles are better protected than ever, but face a constantly evolving threat: weapons increasingly effective at piercing armor. While adding more armor has provided incremental increases in protection, it has also hobbled vehicle speed and mobility and ballooned development and deployment costs. To help reverse this trend, DARPA’s Ground X-Vehicle Technology (GXV-T) program recently awarded contracts to eight organizations. In the News IMS announced four recent promotions: Barry Black was named Sr. Manager of Sales and Marketing. He will be responsible for worldwide sales operations including overall direction and strategy of IMS’s global sales initiative. Dale Azuma was named Regional Sales Manager. He will be responsible for day to day sales operations in the Western territory. “We’re exploring a variety of potentially groundbreaking technologies, all of which are designed to improve vehicle mobility, vehicle survivability and crew safety and performance without piling on armor,” said Maj. Christopher Orlowski, DARPA program manager. “DARPA’s performers for GXV-T are helping defy the ‘more armor equals better protection’ axiom that has constrained armored ground vehicle design for the past 100 years, and are paving the way toward innovative, disruptive vehicles for the 21st Century and beyond.” DARPA has awarded contracts for GXV-T to the following organizations: • Carnegie Mellon University (Pittsburgh, Pa.) • Honeywell International Inc. (Phoenix, Ariz.) • Leidos (San Diego, Calif.) • Pratt & Miller (New Hudson, Mich.) • QinetiQ Inc. (QinetiQ UK, Farnborough, United Kingdom) • Raytheon BBN (Cambridge, Mass.) • Southwest Research Institute (San Antonio, Tex.) • SRI International (Menlo Park, Calif.) Black Azuma Davoll Leary Jodie Davoll was named Marketing Coordinator. She will focus on maintaining the IMS website and marketing communications programs. Peter Leary was appointed Sales Applications Engineer. Peter’s expertise is in the mechanical engineering field. Since 1974, IMS has been supplying the electronics manufacturing industries with highest quality thick and thin film chip resistors, terminations, attenuators, couplers, thermal management devices and other RF and Microwave components. * * * HFE Count on Herotek for unparalleled performance RF & Microwave Products from DC to 75 GHz COMB and IMPULSE GENERATORS DETECTORS AMPLIFIERS LIMITERS PIN SWITCHES ,ĞƌŽƚĞŬ͘ϯϬzĞĂƌƐŽĨĚǀĂŶĐĞĚĞƐŝŐŶĂŶĚdžƉĞƌƚŝƐĞ͘ ǁǁǁ͘ŚĞƌŽƚĞŬ͘ĐŽŵ xϰϬϴͲϵϰϭͲϴϯϵϵx,ĞƌŽƚĞŬ/ŶĐ͘ϭϱϱĂLJƚĞĐŚƌŝǀĞ͕^ĂŶ:ŽƐĞϵϱϭϯϰxŝŶĨŽΛŚĞƌŽƚĞŬ͘ĐŽŵ Get info at www.HFeLink.com 14 High Frequency Electronics Radio tower image courtesy of Tom Rauch, W8JI Features: Advantages: Applications: • Capacitance Range: 0.1 to 5100 pF • Proprietary NPO Dielectric for Superior High Voltage Handling • High Tesla • Case Sizes Case A (0.055'' x 0.055'') Case B (0.110'' x0.110'') Case R (0.070'' x 0.090'') Case C (0.250'' x 0.250'') Case E (0.380'' x 0.380'') • Advanced Engineered Silver Electrode System for Lowest ESR • HF/RF PowerAmplifiers and Transmitters • Rugged Ceramic Design for Reliable Trouble-Free Operation • Antenna Tuning • Improved Image Quality in MRI Scanners • Industrial Lasers • NPO Low Loss Rugged Dielectric • Voltage Ratings up to 7200 WVDC • RoHS Compliant, Pb Free American MRI Imaging Coils • Plasma Chambers • Superior Thermal Management in High RF Power Applications • Proprietary Dielectric Material Technical THE ENGINEERS’ CHOICE ® Ceramics www.atcera mics.co m Featured Products: IMS Wrap-Up SSPA Exodus introduced the ultra-wide band AMP1074 compact SSPA covering the full 2 - 20GHz frequency band at 10W Min. It uses C&W hybrid GaN devices and operates from a 32VDC supply at 4.5A with gain flatness of 5.0dB max peak to peak. Covering multi-bands, it is suitable for use with all modulation standards and features a small form factor, lightweight construction and high reliability. Typical applications include EMI/RFI testing, EW, and communications systems. power of +10 dBm. The DC power requirement is +8 VDC/70 mA. The input and output port configurations are both WR-12 waveguides with UG-387/U flanges. Mechanical configuration is a right angle structure. Other configurations are available. MECA Electronics e-meca.com Power Amp Model SBP-6339031009-1212-S1 is a power amplifier with a minimum small signal gain of 10 dB and a nominal P1dB of +8.5 dBm in the frequency range of 63 to 90 GHz. It has a typical saturated output 16 High Frequency Electronics Guerrilla RF guerrilla-rf.com SAGE Millimeter sagemillimeter.com Exodus Advanced Communications exoduscomm.com DC Blocking Power Dividers MECA offers a full line of DC blocking power dividers. Ideal for GPS, in-building, 5G and backhaul upgrade applications. Available in; 2, 3, 4, 6, 8, 12 & 16 way configurations in N, SMA, BNC & TNC connector styles covering 800 MHz to 2.200GHz with expanded models coming soon covering 698MHz to 2.700 GHz. Made in USA and 36-month warranty. other GRF devices including the GRF400X and GRF201X device families. Coupler Mini-Circuits’ MBDA-30-451HP high-power bi-directional coupler provides high power handling up to 200W and mainline loss of 0.15 dB. Covering frequencies from 225 to 450 MHz, it supports a variety of applications from power amplifiers and antenna feeds to military applications and more. High directivity of 28 dB provides accurate sampling from the coupled port, and 30 dB typical input/output return loss provides excellent matching over full frequency range. Chip Capacitors Knowles Capacitor brands Novacap and Syfer Technology launched a range of high temperature MLC chip capacitors. The HiT range of MLCCs has an operating temperature range of -55 to +200ºC and are suitable for a variety of high temperature applications and offer tin over nickel terminations – not previously available. Wide capacitance range of 4.7pF to 3.3uF, over the rated voltage spread 16 to 630V dc. Stable and ultra-stable dielectric options available. Knowles Capacitors knowlescapacitors.com Mini-Circuits minicircuits.com LNA Guerrilla RF introduced the GRF2105 – a new addition to the company’s broadband, linear LNA devices. This LNA is targeted at small cells, cellular boosters and other broadband, high performance applications offering broadband frequency coverage with a minimal number of external components. Offered in an ultra-small, 1.5 x 1.5 mm DFN-6 package thus sharing a common pin out with numerous Calibration Kit Withwave's compact 3.5 mm Calibration Kits offer excellent performance characteristics for finetuning in production environments and quality testing facilities, using 50 ohm 3.5 mm connectors from DC to 9 GHz. This Cal Kit includes Featured Products: IMS all needed calibration standards (Open, Short, Load) in one unit. It is the best solution available for ease of use in VNA calibration, especially in the field. Withwave with-wave.com Termination SRTechnology designs and manufactures a comprehensive line of terminations, including this SMA(M) 2 WATT, 3 GHz termination. It features reliable VSWR, easy maintenance, and a wide range of broadband frequency applications. SRTechnology specializes in designing and manufacturing passive devices to serve a worldwide customer base. Contact us today to fill your passive device requirements. SRTechnology srtechnology.com 5-Plexer Innertron’s 5-plexer for Macro Base Transceiver Station applications features a modem coupler, low insertion loss, and excellent group delay variation. Innertron’s mission is to provide customers with reliable, consistent RF and Microwave components. It specializes in providing products to serve the wireless infrastructure market. Innertron innertron.com Get info at www.HFeLink.com 18 High Frequency Electronics SSPA The TA1167 is a compact 5W amplifier suitable for COFDM video links in the UAS and DTV broadcast space. It's compact, efficient, design allows for camera‐back installations or other applications that are SWaP constrained. The amplifier is capable of 1W COFDM meeting ‐30 dB ACPR. Triad RF Systems triadrf.com Chokes Coilcraft’s new 0805USBN Series common mode chokes measure just 2.0 x 1.2 mm, with a maximum height of 0.93 mm, making them the lowest profile 0805 common mode chokes available. They offer up to 6.5 GHz differential mode 3 dB cutoff frequency and up to 35 dB common mode noise attenuation across a wide frequency range up to GHz band, making them ideal for noise suppression in super high speed signal lines such as USB 3.x, HDMI 2.0, HDBaseT™, DisplayPort, and DVI. Coilcraft coilcraft.com Terminations RLC Electronics' High Frequency, 50 ohm Coaxial Terminations provide low VSWR over a frequency range of DC to 40 GHz (2.92mm termination). These compact units utilize precisely matched resistors, resulting in a VSWR of less The Right RF Parts. Right Away. We’re RF On Demand, with over one million RF and microwave components in stock and ready to ship. You can count on us to stock the RF parts you need and reliably ship them when you need them. Add Fairview Microwave to your team and consider it done. fairviewmicrowave.com 1.800.715.4396 Featured Products: IMS Wrap-Up dBc/Hz. The PLO has an external reference of 100 MHz at a typical power of +0 dBm. SAGE Millimeter sagemillimeter.com than 1.2:1. These terminations can handle up to 2 Watts at 40 GHz. RLC Electronics rlcelectronics.com Right Angle Adapters SGMC Microwave has an extensive line of 2.4mm, 2.92mm, 3.5mm, and SMA Precision Right Angle In-Series and Between-Series adapters. All right angle connectors are internally swept and mode free through their respective frequencies. Body components are manufactured from corrosion-resistant Type 303 stainless steel, passivated and our one piece center contacts are manufactured from beryllium copper, gold plated. Shippable today from stocking distributor C.W. Swift & Associ- ates: sales@cwswift.com; 818-9891133. SGMC Microwave sgmcmicrowave.com Limiter Mini-Circuits’ RLM-33H+ is a broadband surface-mount limiter, ideal for protecting sensitive receiver circuitry from high-power signals while allowing low-scattered signals to be received. PLO Model SOP-34210117-SF-E2 is a phase locked oscillator with a typical output frequency of 3.4 GHz and a typical output power of +17 dBm. The phase noise at 10 kHz is -120 Get info at www.HFeLink.com 20 High Frequency Electronics Mini-Circuits minicircuits.com HFE photo courtesy of the U.S. Military & NASA RUGGED ULTRA REL ® 10 MHz to 7GHz CERAMIC MMIC AMPLIFIERS Low NF from 0.5 dB High IP3 up to +42 dBm Low DC current 65 mA When failure is not an option. Our CMA family of ceramic MMIC amplifiers is expanding to meet your needs for more critical applications. Designed into a nitrogen-filled, hermetic LTCC package just 0.045” high, these rugged models have been qualified to meet MIL standards for a whole battery of harsh environmental conditions: Qualified for : (see website for complete list and details ) Gross and Fine Leak Mechanical Shock Vibration Acceleration PIND HTOL ( 1700 hours @ +105°C ) Steam Aging Solder Heat Resistance Autoclave And More ! 495 $ from ea. (qty 20) Robust performance across wide bandwidths makes them ideal for instrumentation, or anywhere long-term reliability adds bottom-line value. Go to minicircuits.com for all the details today, and have them in your hands as soon as tomorrow! Electrical Specifications (-55 to +105°C ) Model Freq. (GHz) CMA New CMA-81+ New CMA-82+ 3 x 3 x 1.14 mm New CMA-84+ DC-6 DC-7 DC-7 CMA-62+ 0.01-6 CMA-63+ 0.01-6 CMA-545+ 0.05-6 CMA-5043+ 0.05-4 CMA-545G1+ 0.4-2.2 CMA-162LN+ 0.7-1.6 CMA-252LN+ 1.5-2.5 Gain POUT IP3 NF DC Price $ ea. (dB) (dBm) (dBm) (dB) (V) (qty 20) 10 15 24 15 20 15 18 32 23 17 19.5 20 21 19 18 20 20 23 19 18 38 42 38 33 32 37 33 36 30 30 7.5 6.8 5.5 5 4 1 0.8 0.9 0.5 1 5 5 5 5 5 3 5 5 4 4 6.45 6.45 6.45 4.95 4.95 4.95 4.95 5.45 4.95 4.95 RoHS compliant Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com 503 Rev H Metallic Enclosures Design Guidelines for Metallic Enclosures for RF Circuits By Bill Garner, Steve Rosasco, and Larry Burgess RF circuits with operating frequencies from MHz to GHz constructed using lumped or distributed technologies almost always require an enclosure for mechanical and electrical integrity. The foremost electrical criteria are grounding and shielding – shielding to contain radiation from the circuit or to prevent external signals from interfering with the circuit. An important Another important consideration, however, is the effect the enclosure consideration is the has on RF circuit performance. An improperly dimensioned enclosure may effect the enclosure permit the propagation of RF energy coupled into the enclosure from the has on RF circuit circuit which can cause oscillation or amplitude or phase response vs. freperformance. quency perturbations. In the following, waveguide theory is applied to select the enclosure dimensions to avoid this problem and to predict the attenuation that can be achieved for coupled fields. This approach may avoid the need for the inclusion of RF absorber material to prevent propagation of energy at the circuit operating frequency and its low order harmonics. The design method is demonstrated with a practical RF amplifier example. Waveguide Theory Considering the interior of the enclosure as a waveguide allows the selection of enclosure cross-guide dimensions to prevent energy propagation along the length of the enclosure at frequencies below a selectable cutoff frequency. By selecting the cutoff frequency to be above the maximum circuit operating frequency, the enclosure will not propagate energy within the circuit operating frequency band. The enclosure acts as a high pass filter for fields coupled into the enclosure by attenuating fields at frequencies below the enclosure high pass band edge as defined by the cutoff frequency. The enclosure is modeled as a rectangular waveguide with the larger cross-guide dimension (broad wall) denoted by a, and the shorter dimension by b. The RF circuit is typically mounted on the broad-wall surface. The waveguide propagation mode with the lowest cutoff frequency (longest cutoff wavelength) is the first-order TE10 (transverse electric) mode. The cutoff wavelength λ1 for a general TEmn mode is given by [1] λ1 = 2a/[m2 + (an/b)2]1/2 where m and n are the first and second subscripts describing the propagation mode using the TEmn notation and a and b are the longer and shorter cross-guide dimensions respectively. Using the TE10 m and n subscripts in the above equation yields λ1 = 2a which is independent of dimension b because n = 0. Since λ1 = c/f1 f1 = c/2a (1) where c = speed of light in air (for a in inches use c = 1.1811x10 in/sec) and cutoff wavelength and frequency are denoted by λ1 and f1 respectively. Equation (1) allows the cutoff frequency f1 to be set by selection of a. If energy from the RF circuit or its input or output couple into the enclosure volume and propagate along the length of the enclosure, perturbations of the circuit amplitude or phase vs 10 22 High Frequency Electronics Directional/Bi-Directional COUPLERS 5 kHz to 18 GHz up to 250W ow! Looking for couplers or power taps? Mini-Circuits has N475 326 models in stock, and we’re adding even more! Our versatile, low-cost solutions include surface-mount models down to 1 MHz, and highly evolved LTCC designs as small as 0.12 x 0.06", with minimal insertion loss and high directivity. 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Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com 495 rev E Metallic Enclosures Proven Interconnect PERFORMANCE Industry-leading INNOVATION Versatile, field-replaceable Board Mount Connectors to 110 GHz support multiple launch configurations and ranging board thicknesses. frequency response or circuit oscillation may occur. To prevent this the enclosure should be designed so the enclosure cutoff frequency f1 is above the circuit maximum operating frequency thereby preventing propagation at frequencies in the circuit operating band. Under this condition E and H fields set up within the enclosure do not propagate as a traveling wave, do not transfer power along the length of the enclosure and are attenuated exponentially with distance along the length of the enclosure from the point where they are coupled into the enclosure in accordance with the relation [2] α(dB/unit length) = (54.6/λ1)[1 –( λ1/λ)2]1/2(2) where λ is the operating wavelength with f = c/λ the corresponding operating frequency. The length units are the same as the units of dimension a. Since λ1 = 2a for the TE10 mode, equation (2) becomes α(dB/unit length) = (27.3/a)[1 – (2a/λ)2]1/2(3) Expressing this in terms of frequency results in in. 1.0mm (W) DC to 110 GHz Connectors offer superior performance for high-frequency flange mount, thread-in, board mount and cable applications. Low VSWR Low Insertion Loss Low RF Leakage High Temperature Rugged and Durable Excellent Repeatability www.southwestmicrowave.com See us at EDI CON USA Booth #212 Get info at www.HFeLink.com 24 High Frequency Electronics α(dB/unit length) = (27.3/a)[1 – ( f/f1)2]1/2(4) When f = f1, α = 0 dB/unit length and for f << f1 and a = 1 inch, α= 27.3 dB/ The equations above allow the calculation of attenuation once the dimension a and the cutoff wavelength or frequency is known; for enclosure design it is convenient to have an expression that allows direct computation of a for the desired attenuation α(dB/in). Such a formula can be found from equation (4) by substituting f1 = c/2a and manipulating to isolate a. This yields a(in) = 1/[(2f/c)2 + (α/27.3)2]1/2(5) where the units of a are inches if the units of α are dB/in and c are in/sec. Practical Application The signal attenuation of equations (2), (3) or (4) is experienced by E and H fields coupled into the enclosure at circuit frequencies below f1. Because the frequency is below f1, no traveling wave in either direction along the length of the enclosure will be set up from the point where the fields are coupled into the enclosure. Most RF circuits mounted in an enclosure obtain their external signals from coaxial connectors mounted in an end wall. The center pin of the connector is either hard-wired to a lumped circuit element or mates to a microstrip line (printed line on a PC board) and if these connections are short with good RF return to the shield of the connector, the RF energy coupled into the enclosure volume is significantly attenuated. RF lumped elements such as air inductors, however, can inject or intercept fields in the enclosure volume, therefore for design margin and simplicity it is advisable to assume 100% coupling. The following example illustrates how equations (4) and (5) are used in the design of the enclosure. A 500 MHz, four stage, 60 dB gain amplifier is to be housed in an enclosure 6 inches long. Designing for 90 dB attenuation over the 6 inch length of the circuit provides sufficient reduction of high level amplifier output signals from coupling to the circuit input at a level that could cause circuit oscillation or frequency response perturbation. (Additional attenuation is provided by the expected less than 100% efficient coupling between the circuit and the enclosure.) Over the 6 inch length of the enclosure this requires attenuation of 15 dB/in. Using equation (5) with attenuation, α = 15 (dB/in), maximum circuit operating frequency f = 500 MHz, and c = 1.1811x1010 in/sec yields the cross- E T O F ED INT E R N All the RF testing you need… TH I GS LT N … One simple solution E UN L N ICE W I-F Coexistence Performance Conformance Interoperability Automated, scalable RF platform for LTE unlicensed, Wi-Fi, IoT, and more! All rights reserved. Learn more at Azimuthsystems.com I S Metallic Enclosures guide width a = 1.799 in. The attenuation can be checked by using equation (4) and inserting the cutoff frequency f1 = c/2a = 3.283 GHz, f = 500 MHz and a = 1.799 in which verifies the desired attenuation. The attenuation of E and H fields coupled into the enclosure from RF circuit harmonics below cutoff for this example can be calculated by use of (4) and are shown in the table below. It is assumed that the fundamental frequency is 0.5 GHz. Note that equation (4) can only be used for frequencies below the enclosure cutoff frequency. Harmonic no. Harmonic frequency (GHz) Attenuation (dB/in) 2 1.0 14.5 3 1.5 13.5 4 2.0 12 5 2.5 9.8 Figure 1 • Table of Harmonic Attenuation for Amplifier Example. The table below contains data for enclosure dimension a and cutoff frequency f1 for a set of 3 desired attenuations at four operating frequencies. Note that as dimension a is reduced for a selected operating frequency the attenuation increases. Conversely dimension a must be reduced in order to obtain the same attenuation as the operating frequency is increased. The reduction in cross-guide dimension a for increasing attenuation or frequency may be a problem since it will limit the area available to mount the circuit. If a minimum total attenuation over the circuit length is required as in the example above, some increase in a may be achieved by increasing the length of the enclosure to reduce the required attenuation per unit length which will provide some increase in enclosure width a. Evaluation of equation (5) can readily be automated in a spread sheet to compute the increase of a. If it is not possible to increase the enclosure length to increase cross-guide width as described above, the required α(dB/in) provided by the waveguide cutoff effect can be reduced by adding RF absorber within the enclosure. Absorber materials are available in sheets of various thicknesses with adhesive backing that permit permanent attachment to enclosure interior walls or the lid. Absorbers with a wide range of attenuation characteristics are available. Generally the attenuation of these materials increases with frequency and thickness. Alternate approaches include the use of partitions or shields mounted on the circuit board where good grounding can be arranged. This approach may be appropriate for components or circuits that efficiently couple energy into the enclosure or are highly susceptible to fields in the enclosure. References [1] Orfanidis, Sophocles J. Electromagnetic Waves and Antennas, Chapter 9, equation (9.5.8). (Available at http:// www.ece.rutgers.edu/~orfanidi/ewa/orfanidis-ewa-book. pdf) Max. operating frequency f(GHz) Attenuation α(dB/in) Cross-guide dimension a(in) Cutoff frequency f1(GHz) 0.5 0.5 0.5 2 2 2 4 4 4 8 8 8 15 25 35 15 25 35 15 25 35 15 25 35 1.799 1.087 0.778 1.549 1.024 0.754 1.147 0.878 0.690 0.684 0.612 0.536 3.283 5.431 7.588 3.812 5.766 7.831 5.151 6.727 8.563 8.633 9.656 11.015 Figure 2. Table of Enclosure Dimensions a and Cutoff Frequencies f1 for Different Operating Frequencies f and Attenuations α(dB/in). 26 High Frequency Electronics Connectors, Components & Adapters Connectors • • • • • • SMA, TNC, Type N, 2.92mm, 2.4mm, ZMA, BNC Nominal Impedence: 50 ohms Frequency Range: DC - 50 GHz Interfaces: IAW M39012 Meet Requirement of M39012 Environmental Standards per MIL-STD-202 Resistive Components • • • • • • • Attenuators / Terminations SMA, TNC, Type N, 2.92mm, 2.4mm Nominal Impedence: 50 ohms Frequency Range: DC - 50 GHz Interfaces: IAW M39012 Meet Requirement of M3933 / M39030 Environmental Standards per MIL-STD-202 Adapters • • • • • • SMA, TNC, Type N, 2.92mm, 2.4mm, ZMA, BNC Nominal Impedence: 50 ohms Frequency Range: DC - 50 GHz Interfaces: IAW M39012 Meet Requirement of M55339 Environmental Standards per MIL-STD-202 SV Microwave offers the most comprehensive line of standard and QPL (Mil Approved) coaxial Connectors, Components and Adapters in the industry. Microwave Components, Inc. has been delivering SV precision parts from stock for more than a decade!!! Call us today and put our experience to work for you… Metallic Enclosures [2] Terman, F. E. Electronic and Radio Engineering, McGraw-Hill, New York, 1955, Sec. 5.8 is a reference for waveguide attenuation below the cutoff frequency. About the Authors Bill Garner received a BSEE from Valparaiso University and did Graduate Studies in Mathematics at Penn State University. Publications: 1. Designing Antennas for Cellular Phones, Microwaves & RF, May 1999 2. Bit Error Probabilities Relate to Data-Link S/N, Microwaves & RF Nov. 1987 3. Quick Design of Symmetrical ‘T’ and ‘H’ Pads, EDN, July 1968 4. Nomograph: Designs Resistive Pi Networks, EDN, Nov. 1967 Patents: 1. Mobile telephony standards converter—US06181951 2. Low voltage variable gain amplifier with feedback—US06052030 3. Dual band cellular/PCS antenna—US05974302 4. Fixed dual frequency band antenna—US05963170 5. Channel usage monitoring arrangement for base station— US05890056 6. Dual frequency band antenna system—US05717409 7. Band-pass filter and support structure therefor— US04940956 Steve Rosasco received a BSEE from Villanova University, an MSEE from New York University and a Ph.D. in Electrical Engineering from the University of Pennsylvania. He has been involved in the design, development and test of EW, communication, adaptive array, interference cancelation and radar systems covering frequencies from DC to Ku band. Larry Burgess received a BS and MS from MIT and a Ph.D. from University of Pennsylvania, all in Electrical Engineering. He has designed and evaluated antennas, transmitters, and receivers at frequencies from 2 MHz to 6 GHz for both military and commercial applications. After working at large companies and startups for several decades, he resides in Silicon Valley and is the Principal at Wireless Consulting Services. Get info at www.HFeLink.com 28 High Frequency Electronics Planar Monolithics Industries, Inc. Solid State Multi-Throw Switches & Switch Matrices, DC to 50 GHz Amplifiers – Solid State Attenuators – Variable/ Programmable Couplers (Quadrature, 180° & Directional) Detectors – RF/Microwave DLVAs, ERDLVAs & SDLVAs DTOs, VCOs, PLO, DROs, & Frequency Synthesizers Filters & Switched Filter Banks Form, Fit, Functional Products & Services Frequency Discriminators & IFMs Integrated MIC/MMIC Assemblies (IMAs) IQ Vector Modulators Limiters – RF/Microwave Log Amplifiers Millimeter Wave Components (Up to 50 GHz) Miscellaneous Products Multifunction Integrated Assemblies (MIAs) Phase Shifters & Bi-Phase Modulators Power Dividers/Combiners (Passive & Active) PMI offers a full line of RF and Microwave, Solid-State Switches that range from DC to 50 GHz. A wide range of standard models with various options are available that include: • SPST to SP128T Configurations. • Reflective or Absorptive • Hermetic Sealing • High Reliability to MIL-STD-883 • Small Quantity Requirements Accepted • Military or Stringent Screening • Specialized Testing & Custom designs welcome! Standard Models... Model P20T-4G8G-80-T-515-SFF Absorptive, SP20T PIN Diode Switch Frequency 4.0 to 8.0 GHz Isolation 80 dB Min - Measured 83.3 dB Insertion Loss 4.0 dB Max - Measured 3.95 dB VSWR In/Out 2.0:1 Max, 1.8:1 Typ Input Power 100 mW Max CW (Hot Switchable) • Package Size: 4.0” sq x 0.63” • DC Voltage: +5 VDC @ 144 mA +15 VDC @ 160 mA • Switching Speed: 100 ns Measured Model P32T-0R5G18G-60-T-SFF Absorptive, SP32T PIN Diode Switch Frequency 0.5 to 18.0 GHz Isolation Receiver Front Ends & Transceivers 60 dB Min (0.5 - 2.0 GHz) 70 dB Min (2.0 - 18.0 GHz) - Measured 77.3 dB Insertion Loss SDLVAs, ERDLVAs & DLVAs 9.5 dB Max - Measured 8.66 dB VSWR In/Out 2.0:1 Max Input Power 20 dBm CW Max (Operating) Pulse Modulators (SPST) Rack & Chassis Mount Products Single Side Band Modulators SMT & QFN Products Switch Matrices Switched Filter Banks Switches – Solid State Systems – Fly Eye Radars Threshold Detectors USB Products Switch Matrix West Coast Operation: 4921 Robert J. Mathews Pkwy, Suite 1 El Dorado Hills, CA 95762 USA Tel: 916-542-1401, Fax: 916-265-2597 • Package Size: 8.0” x 3.5” x 1.0” • DC Voltage: +5 VDC @ 1470 mA -5 VDC @ 100 mA • Switching Speed: 85 ns Measured East Coast Operation: 7311-F Grove Road Frederick, MD 21704 USA Tel: 301-662-5019, Fax: 301-662-1731 sales@pmi-rf.com • www.pmi-rf.com ISO9001-2008 REGISTERED Harmonic Balance Harmonic Balance Simulation Algorithm: The Basics By Ain Rehman Ever had the error message “Transient time step too small” come up during your transient simulations? We have. Many times. One of the most common reasons for this is that our circuit contains two widely separated time constants. So if we constrain the simulator to follow the fast time constant (by setting the timestep to be small, Explaining the HB thereby following the faster time constant), it cannot follow the slower one, technique as it is and vice versa. End result in a majority of cases: “Transient time step too applied to circuit small”! simulation. Well, the algorithm gurus came up with a technique that can put an end to this extremely annoying problem. The answer is an algorithm (that works in a majority of cases) called the “Harmonic Balance” algorithm. We can become effective users of this algorithm and the simulator which it is implemented in, if we understand it and its limits. This brief article is an attempt to explain the HB technique as it is applied to our favorite kind of activity: circuit simulation. HB Algorithm The HB algorithm is very efficient and flexible and actually calculates the steady state solution directly. It does this by using the Fourier series philosophy. HB is a pure frequency domain technique. We all know how the ac frequency domain runs get done with a minimum of fuss, and relatively quickly. Well, HB does this first on small signal frequency domain components and then on larger signals which generate many new frequency components (Harmonics). It does sufficient small signal steady state calculations on the harmonics so that the shape of the final transient signal is produced to within an extremely small error tolerance. Prime candidates for the use of HB are: (1) Circuits with widely separated time constants as indicated above. (2)Mixers. (3)Oscillators. (4) Frequency multipliers. (5) Frequency dividers. (6) Power amplifiers. (7)Modulators. (8) Computation of P1 dB. (9) Computation of IP3. (10) Computation of total harmonic distortion. (11) Computation of IM components. (12) Analysis of Power amplifier load – pull. (13) Nonlinear noise analysis. (14) Simulation of oscillator harmonics. (15) Simulation of oscillator phase noise. (16) Simulation of amplifier amplitude limits. (17) Dispersive transmission lines. (1) Circuits with a lot of reactive components. 30 High Frequency Electronics y Tin TOUGHEST MIXERS UNDER THE SUN W NO UP TO 0.1 4 20 GHz ! SIM MH z-2 0G Hz $ 95 from ea. qty. 1000 Mini -Circuits’ rugged, tiny ceramic SIM mixers All models stand up to the toughest operating conditions, including high ESD levels, and they're . offer ultra-wideband, high-frequency performance for applications ranging from 100 kHz to 20 GHz, 0.2"x 0.18" available from stock for a very competitive price. while maintaining low conversion loss, high Visit our website to view comprehensive isolation and high IP3. They’re available in 25 models performance data, curves, data sheets, PCB layouts, with LO levels of +7, +10, +13, & +17 dBm, so regardless environmental specifications and more. You can even of your bandwidth requirements or application order direct from our web store and have your order in environment, whether industrial, military or commercial, your hands as early as tomorrow! there's a tiny SIM mixer that will meet your needs. Mini-Circuits...we’re redefining what VALUE is all about! U.S. Patent # 7,027,795 RoHS compliant Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com 428 rev L Harmonic Balance Figure 1 • Linear and non-linear sections. Note in each case HB is used when the circuit exploits non-linearity in some form to get the performance required in the circuit design. For the more analytically minded, the following explanation of the basics of HB is in order. With reference to Figure 1, note that the entire circuit to be simulated is first separated into its linear and non linear sections as shown. The interface is a set of voltages and currents as indicated. Two transadmittance matrices are defined; Y, that maps the signal voltages VsM to the interconnection currents iN and Y1 that maps the voltages vN to the currents iN. Thus the composite current is: I = YMXN Vs + Y1NXN V = Is + Y1NXN V Eqn (1). Since Vsi are known and constant the current Is (input linear region currents) can be readily computed. The non-linear section is modeled first by a current transient solution i(t) = f1(v1, …..vk) and by a transient 32 High Frequency Electronics charge function q(t) = f2(v1,…..vq). These functions are transformed into frequencies by the use of the Fourier transform and provide frequency domain vectors I1 and Q1. A harmonic balance solution is found if the interconnect currents for the linear section are the same as the interconnect currents for the non-linear section. Therefore the currents of the linear and the non-linear sections are balanced at each harmonic frequency. This method is called Kirchhoff’s current law harmonic balance (KCL-HB). This generates a non-linear matrix equation that leads to the desired solution: G(V) = Is + Y1.V + j ω.Q + I1 = 0 Eqn (2) where matrix ω contains the radian frequencies on the first main diagonal and zeros anywhere else, is the zero vector. When the London Underground needs custom connectors rugged enough to stand up to their harsh tunnel network, they turn to San-tron. Windswept, dirty environments with fluctuating moisture and temperature can wreak havoc on your average coaxial connection. That’s why wireless system designers for the London Underground turned to San-tron. We put six decades of expertise to work and delivered a suite of uniquely sealed, pressurized solutions that will carry their signals for years to come. London Underground becomes a proving ground for customized pressurized solutions Read the whole story and find out how we can meet your next connectivity challenge at Santron.com/London. Always Thinking Harmonic Balance The Largest Selection of Waveguide Components For Same-Day Shipping Waveguide Bandpass Filters Waveguide Detectors Waveguide Power Amplifiers Waveguide Sections Waveguide Standard Gain Horns Waveguide Terminations Waveguide Variable Attenuators Waveguide to Coax Adapters Flexible Waveguide Waveguide Up/Down Converters • Frequencies from L-band to W-band • Leading Edge Performance • Sizes from WR-10 to WR-430 • High Precision Machining • Multiple Flange Styles • All In-Stock and Ready to Ship Get info at www.HFeLink.com 34 High Frequency Electronics Inverse Fourier Transform The inverse Fourier transform is applied at each iteration to convert to time domain quantities. Then these time domain solutions ( v1, ……vk) and (v1,…… vq) are inserted into the solution i(t). A further Fourier transform provides the charge and current vectors as above. After several iterations a solution is found, i.e., we have the voltages v1, v2 .. etc., at the interconnect points. These provide the means to calculate the voltages at all the nodes. Inserting current sources at the interconnect points and doing an AC simulation provides the complete simulation. In conventional frequency-domain linear analysis, nonlinear devices are represented by linearized equivalent circuit models around the dc operating point. Typically, the models are extracted from small-signal and/or dc measurements. Such models can be inadequate or even unsuitable for large-signal simulation. Using harmonic balance, large-signal nonlinear models can be extracted directly from power spectrum and/or waveform measurements. Another significant approach is to combine dc, small signal and large-signal performance specifications into one unified design optimization problem. This is possible if the same nonlinear circuit model is used in dc, small-signal and largesignal analyses, providing analytically consistent results. The ability to optimize different types of responses simultaneously instead of separately brings important benefits to a CAD system, especially when some of the variables affect both the small- and large-signal performance. Harmonic balance can also be applied to statistical optimization of nonlinear circuits. In order to reduce the computational effort involved in the Monte Carlo simulation of a large number of random outcomes (i.e., circuits with statistically perturbed parameter values), a recent approach applies quadratic approximation not only for the circuit responses but also for their derivatives. Since the determination of the quadratic model coefficients is independent of the number of outcomes, we can improve the sampling accuracy using a large number of outcomes without excessive computational effort. A thesis from MIT also addresses harmonic balance and is quite useful in furthering the understanding of the algorithm. It can be found on the web at: http://www.rle.mit.edu/cpg/publications/nastov.pdf. Competing Sources The EDA industry (e.g., Agilent ADS and CADENCE SpectreRF) has come up with two competing approaches—the harmonic-balance algorithm and the PSS (Periodic Steady State) algorithm—for simulating RFICs/MMICs, such as power amplifiers, low-noise amplifiers, mixers, and VCOs. The PSS algorithm is effectively an RF-simulation extension to a transient-simulation engine, assuming that a periodic signal exists in the system. Cadence Design System’s SpectreRF simulation implements the PSS algorithm. The efficiency of each type of simulation (harmonic balance versus PSS) depends largely on the types of elements in the circuit and the complexity of the signal at the input. For example, passive elements—such as resistors, inductors, and capacitors— are linear except in the extremes of their operating ranges. Diode elements exhibit nonlinear electrical characteristics at large input signals. Active devices are made up of P-N diode junctions and are, therefore, also nonlinear. Note that both types of simulators first require the calculation of a dc operating point. Benchmarking done on these two types of tools came up with the following conclusions: Although harmonic-balance simulation suits certain nonlinear RF circuits, such as the large-signal simulation of power amps, the PSS engine may have benefits for highly nonlinear circuits and small-signal simulations. The PSS RF Solutions From RF Engineers Largest selectionp Expert technical supportp Same day shippingp Applications Engineers Available 24/7 Support Armed with the world’s largest selection of in-stock, ready to ship RF components, and the brains to back them up, Pasternack Applications Engineers stand ready to troubleshoot your technical issues and think creatively to deliver solutions for all your RF project needs. Whether you’ve hit a design snag, you’re looking for a hard to find part or simply need it by tomorrow, our Applications Engineers are at your service. Call or visit us at pasternack.com to learn more. 866.727.8376 www.pasternack.com PRODUCTS TO SOLUTIONS RF Products Ducommun has more than 45 years of experience with the design, testing and manufacturing of standard and custom millimeter wave amplifiers. • High Power, Single DC power supply/ internal sequential biasing 32 to 36 GHz Power Amplifier • AHP-34043530-01 • Gain: 30 dB (Min) • Gain Flatness: +/-2.0 dB (Max) • P-1D dB: 34 dBm (Typ), 33 dBm (Min) 32 to 36 GHz Power Amplifier • ALN-33144030-01 • Gain: 30 dB (Min) • Gain Flatness: +/-1.0 dB acoss the For additional information, contact our sales team at +1 (310) 513-7256 rfsales@ducommun.com Get info at www.HFeLink.com 36 High Frequency Electronics CONTACT US band • Noise Figure : 4.0 dB (typ) Harmonic Balance engine also performed relatively better on VCO circuits. Also, transient simulators can perform well for other types of circuit simulations, such as larger circuits with some custom- or standard-cell digital content. (Reference: http://m. eet.com/me http://www.rle.mit.edu/cpg/documents/04167776-1.pdfdia/1140852/18619-238416.pdf) For an overview of PSS in the SpectreRF program please see the following link: http://www2.ece.ohio-state.edu/~bibyk/ece822/SpectreRF_0728.pdf. Another interesting paper on RF simulation algorithms can be found at the following link: http://www.rle.mit.edu/cpg/documents/04167776-1.pdf Harmonic balance freeware is also available on the web for those who do not want to spend the rather large amounts of money for commercial programs like ADS. One such program is HBfree. It will require some effort to get it going, but once that is done the program does generate some fairly respectable results. HBfree is available at the following link. https://sourceforge.net/projects/hbfree/. About the Author Ain Rehman is Founder and Chief Engineer at Signal Processing Group, Chandler, Ariz. His experience on the Harmonic Balance algorithm was obtained by designing RF/microwave integrated circuits over a significant length of time. Specifically the Harmonic Balance algorithm as implemented in Agilent ADS. He has found that although ADS, with its massive (and highly complex architecture) can sometimes cause issues, it does do the job. (Compared silicon with simulation and found good agreement). This is not to say that PSS should be ignored. As noted above, this evaluation has been done and some results are already quoted. Get info at www.HFeLink.com Product Highlights YIG-Tuned Band Reject Filters Micro Lambda Wireless announced the production release of YIG-Tuned band reject filters with 50 dB notch depths at 500 MHz and 60 dB notch depths starting at 2 GHz. Standard models cover the 500 MHz to 2 GHz, 2 to 6 GHz, 6 to 18 GHz and 2 to 18 GHz. The standard model operates over the 0 to +65 C temperature range, but Military versions covering -40 to Phase Shifters Catalog Spectrum Elektrotechnik’s new catalog features its Precision Phase Shifters, or Phase Adjusters, which allow the adjustment of the electrical separation between components. A precision mechanical movement provides for smooth and accurate adjustment over the entire frequen- 38 High Frequency Electronics +85C are available on special order. All units are available with Analog, 12 bit TTL and 16 bit serial drivers. Applications include Test Instruments, Wide Band Receivers, Telecom, Satcom and a variety of Military applications. Availability: 4-6 weeks from receipt of Order. Micro Lambda Wireless microlambdawireless.com cy range. A secure locking mechanism is furnished with every unit. A wide selection of components is available, offering different mechanical configuration, frequency range, electrical length, and/or connector configuration. Spectrum Elektrotechnik spectrum-et.com MODULAR TEST SYSTEMS Built Your Way and Delivered within 2 Weeks! Signal Routing & Attenuation Control for Production Test, R&D and More! Mini-Circuits’ new ZTM-Series RF test systems dramatically accelerate custom solutions for a wide range of applications in test environments. Choose from our lineup of extra-long-life SPDT, SP4T, SP6T and transfer switches, and programmable attenuators with attenuation ranges of 0 to 30, 60, or 90, 110 or 120 dB. We’ll build and ship a solution tailored to your exact requirements within just 2 weeks! It’s that simple! Give us a call and talk to our engineers about how Mini-Circuits’ ZTM-Series custom rack mount test solutions can improve efficiency, increase throughput, and save cost in your business! Features • Rugged 19" Rack Mountable Chassis • Customizable Front Panel Layout • Light Weight • USB and Ethernet Control • User-friendly GUI and DLLs Included • Qualified to 100 Million Switch Cycles • Affordable Cost • Delivery within 2 Weeks! Choose from hundreds of possible configurations! SPDT Switches DC – 18 GHz SP4T Switches DC – 18 GHz SP6T Switches DC – 12 GHz Transfer Switches DC – 18 GHz 0 – 30, 60, 90, 110 or 120 dB Programmable Attenuators 1 MHz – 6 GHz Configure your system online now for a fast quote! Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com 527 rev. C Product Focus 40 GHz Power Sensor “ LadyBug Technologies announced its fully self-contained 9 kHz to 40 GHz Wideband RF and microwave power sensor. The highly accurate power sensor is suitable for laboratory use, EMC testing, SATCOM, and defense applications. When equipped with the optional SPI/I2C interface as shown, the sensor can be directly controlled using a microcontroller, FPGA or other process. Users can also connect to the sensor using its USB HID, USBTMC dual USB interface system. All interfaces use standard SCPI commands. An I2C/SPI development kit is available. The highly accurate sensors deliver over 80dB of dynamic range; the sensors are extremely flexible. The thermally stable, patented sensor is capable of making highly accurate, first-tier NIST-traceable measurements below -60 dBm without zeroing before use. This low level sensitivity, broad frequency range and flexible connectivity make the sensor is ideal for a wide variety of applications. The highly accurate power sensor is suitable for laboratory use, EMC testing, SATCOM, and defense applications. LadyBug Technologies ladybug-tech.com 40 High Frequency Electronics ” Product Highlights Antenna Southwest Antennas introduced its new small form factor “Turbo Cloverleaf” family of circularly polarized (CP) Omni antennas in 1.98 - 2.2 GHz and 2.3 - 2.5 GHz frequencies. These new products deliver substantial increases in high data rate throughput and signal-tonoise ratio (SNR) in a very compact, rugged radome that Transceiver Model SSK-SC763863-12-C1 is an E band, FMCW bistatic radar transceiver assembly. The transceiver takes a 9.5 GHz to 10.8 GHz/0 dBm signal to reach 76.0 to 86.4 GHz through an X2 and X4 multiplier for LO and TX signal. The waveguide filter is implemented to clean the unwanted harmonic and spurious, and a directional coupler is used to separate the transmitter and receiver LO paths. It includes two rectangular horns with 20 dB typi- measures two inches or less on each side. Each antenna in the new family of products also features an integrated three inch RF coaxial gooseneck assembly with ruggedized non-rotating RF connector options. Southwest Antennas southwestantennas.com cal gain. Typical transmitting power is +10 dBm and the conversion gain and noise figure are 16 dB and 6.0 dB typically. The transceiver assembly requires +8 VDC/1,000 mA DC bias. It uses SMA (F) connectors for both LO and IF ports. SAGE Millimeter sagemillimeter.com 41 Product Highlights Edge Launch Connectors SGMC Microwave now offers Precision Grade Edge Launch Connectors for use with microwave applications requiring excellent mode free operation up to 67 GHz. 1.85mm, 2.4mm, 2.92mm, 3.5mmm & SMA Series are readily available for 0.062” (1.574mm) thick PCB’s. Our Edge Launch connectors are designed to slide on to the edge of the PC Board via the slot in the body as pictured. Once assembled on the edge of the board, the internally captivated end launch contact rest on the top side of the board. The body and contact are then soldered to traces or pads on the PCB. Manufacturing Materials include Beryllium Copper, Gold Plated bodies with PCTFE (PolyChloroTriFluoroEthylene) or (SMA Fluorocarbon (PTFE)) dielectrics. SGMC also manufactures end launch connectors with different slot widths to suit the variations in PC Board thicknesses. Available for prompt delivery – Same day shipping for all inventory items. SGMC Microwave sgmcmicrowave.com Reflector Model SAJ-060-S1 is a 6” x 6” x 6” trihedral corner reflector, featuring a rugged aluminum construction with a gold chemical film finish. The trihedral reflector simulates radar target precisely and is widely used for Radar system calibration. With a ¼-20 threaded hole for a built 42 High Frequency Electronics in mounting bracket, the reflector can be mounted onto a tripod for rapid system setups. SAGE Millimeter sagemillimeter.com Product Highlights Beamforming Kit Keysight introduced the W1720EP Phased Array Beamforming Kit, a new add-on software simulation personality for the SystemVue 2016.08 design environment. The software enables researchers and system architects working on platforms using beamforming algorithms for 5G, satellite, NewSpace, radar and EW applications, to reduce interference and power consumption, while increasing physical range. Active electronically-scanned array (AESA) systems can range from 16 to 256 elements for 5G applications to hundreds of elements in satellite systems, and many thousands of individual baseband and RF signal paths in military systems. Keysight Technologies keysight.com LNA ZX60-83LN+ is a wideband low noise connectorized amplifier providing a unique combina¬tion of low noise figure, high IP3 and flat gain over a very wide frequency range, supporting a wide range of sensitive, high-dynamic range receiver applications and many systems where high performance over wideband is needed. It operates on a single 5 or 6V supply and comes in a rugged, compact unibody case (0.74 x 0.75 x 0.46”) with SMA connectors. Mini-Circuits minicircuits.com Get info at www.HFeLink.com 43 Product Highlights Reverse Polarity TNC Components MECA offers a line of Reverse Polarity TNC Power Dividers, Attenuators and Terminations. Power Dividers from 2-Way through 16-Way, 40W Power Divider/ Combiners are optimized for excellent performance across all wireless bands from 698MHz – 2.7GHz. Also 2 watt Terminations & Attenuators available in values from 1 to 32 dB. Made in the USA – 36 month warranty. MECA Electronics e-meca.com ADC Texas Instruments introduced the highest level of radio-frequency (RF) sampling performance with the ADC32RF45, the industry’s fastest 14-bit analog-to-digital converter (ADC). This dual-channel ADC enables direct RF signal conversion up to 4 GHz, giving engineers access to the highest dynamic range and input bandwidth. The ADC32RF45 eliminates up to four intermediate-frequency downconversion stages in multiband receivers, which simplifies system architecture and reduces board space up to 75 percent. Texas Instruments ti.com Get info at www.HFeLink.com 44 High Frequency Electronics Product Highlights Test Cable MegaPhase LLC has expanded the frequency range in which its KillerBee™ test cable operates to DC – 40 GHz. KillerBee, the test cable that has set a new standard for phase and amplitude stable performance, will now be available to more laboratories and production environments for use in an even wider variety of tests. The KillerBee is lightweight yet extremely rugged and ultra-flexible. It’s known for dependable, repeatable per- “ The site contains a breadth and depth of resources for using NI AWR software. ” formance, which means fewer calibrations and less downtime. When increased productivity and reduced downtime are factored into its cost, the KillerBee exemplifies the MegaPhase promise of lowest cost per measurement™. MegaPhase megaphase.com Resource Library A new resource library has been added to the NI AWR Design Environment™ website so that visitors can quickly and easily find and choose the specific/targeted content they need. The site contains a breadth and depth of resources for using NI AWR software and is organized by resource type, application, technology, product and industry. This new resource library can be accessed at awrcorp.com/ resource-library/. National Instruments awrcorp.com 45 Product Highlights Epoxy Featuring special high thermal conductive fillers, Master Bond EP48TC is two part epoxy paste that can be applied in bond lines as thin as 10-15 microns. This material offers exceptionally low thermal resistance of 5-7 x 10-6 K•m2/W, which imparts impressive heat transfer capabilities and thermal conductivity of 20-25 BTU•in/ Attenuators Richardson Electronics announced availability of a selection of wideband attenuators from Integrated Device Technology (IDT). The F1912, F1950, F1951, F1953 and F1956 are part of IDT’s family of Glitch-Free digital step attenuators optimized for the demanding requirements of base station radio cards and communications infrastruc- 46 High Frequency Electronics ft2•hr•°F [2.88-3.60 W/(m·K)]. It can be used in applications in the aerospace, electronics, optical, specialty OEM and many other high-tech industries. Master Bond masterbond.com ture applications. The silicon design results in very low insertion loss, low distortion and the devices offer pinpoint accuracy with excellent ESD protection. Richardson Electronics rellpower.com Product Highlights Filter CBP-1490A+ is a ceramic-coaxial-resonator based bandpass filter in a shielded package fabricated using SMT technology. This filter offers outstanding close in rejection and power handling for use in aeronautical, test and measurement applications. Mini-Circuits minicircuits.com amcomusa.com 301-353-8400 The RF Power House Wideband Power Amplifiers (And More!) MMIC Amp AMCOM has all the expertise, manpower, space, and equipment for manufacturing state-of-the-art products. Some of our capabilities are: active device design, MMIC design, and power amplifier module design. In addition, we are experts in device/MMIC packaging, module assembly and RF/DC testing. For active devices, we either procure parts such as silicon LDMOS, or GaN HEMT, or we use a semiconductor foundry to fabricate our own proprietary device/ MMIC. AMCOM amcomusa.com Power Device (GaAs FET, GaAs PHEMT, GaN/SiC) MMIC PA PA Module Bias T T/R Switch Attenuator Phase Shifter 401 Professional Drive | Suite 140 | Gaithersburg, MD 20879 Get info at www.HFeLink.com 47 Product Highlights Switches RLC Electronics introduced Low PIM switches, with offerings from SP2T to SP12T. Switches are available in any frequency range from DC up to 65 GHz, and the low PIM designs offer the customer the ability to reduce intermodulation in active devices in order to reduce system interference. Typical performance ranges from -160dBc to SSPA Module Model AMP1124 provides a typical output power of 100W P1dB and 200W Psat across 0.7-4.2GHz frequency band. Using the latest GaN devices, gain flatness is 4.0dB peak to peak and requires 32V at 40A Max. Suitable for use with all modulations standards requiring high power and wide band coverage. While having a small form fac- 48 High Frequency Electronics -175dBc, and the high isolation minimizes cross-talk between channels to ensure signal integrity. Customer applications include DAS, Surveillance and Communication Systems. RLC Electronics rlcelectronics.com tor and lightweight, it has built-in protection circuits, high reliability and ruggedness. Typical applications include High Power Testing EMI/RFI, EW and Communications. Exodus Advanced Communications exoduscomm.com Product Highlights Detectors Herotek offers detectors, comb generators, limiters, switches, GaAsFet amplifiers (broadband, low noise, and power) and integrated subsystems of many types, including up and down converters, multipliers, harmonic mixers, and transceivers. Herotek has expanded the list of Receptacles SGMC Microwave introduced Type N Male and Female (4) Hole Flange Receptacles with extended pin and dielectrics (epoxy captivated). Electrical: 50 Ohm, Low VSWR, Low Insertion Loss, Mode Free through 11 GHz (18 GHz version also available). Materials: Passivated 303 Stainless Steel Housings with Gold plated Center standard detector, limiter, and comb generator models in stock for immediate shipment. Now over 60 models in stock for immediate delivery. Herotek herotek.com Conductors. Brass, Nickel Plated housings are also available. Dielectrics are Virgin PTFE Fluorocarbon. Shippable today from stocking distributor C.W. Swift & Associates: sales@cwswift.com; 818-989-1133. SGMC Microwave sgmcmicrowave.com 49 Product Highlights Switches Pasternack expands its portfolio of in-stock solid state PIN diode switches covering frequencies from 10 MHz to 67 GHz. 69 unique new models of 50 ohm PIN diode switches are available in compact connectorized package styles and display impressive isolation, insertion loss, and switching speed performance. These are used extensively in aerospace, defense, and commercial RF, microwave, and millimeter-wave communication systems, and much more. Pasternack pasternack.com ELECTRICALLY CONDUCTIVE COATINGS Ideal for EMI/RFI Shielding MB600G Graphite filler MB600S Silver filler MB600SCN Silver coated nickel filler w w w. m a st e r b o n d . co m SSPA The TA1164 is a broadband GaN SSPA, designed for general‐purpose RF test and military jamming applications. Internal DC conversion allows for a 12 ‐ 36 Vin supply voltage. CW output power is 10W min, 20W typical across the band. Triad RF Systems comprises three partners with over 40 years’ experience in the design, manufacture, marketing, and servicing of RF/Microwave amplifiers and amplifier systems. Triad RF Systems triadrf.com 50 High Frequency Electronics Product Showcase WAVEGUIDE SWITCHES COAXIAL SWITCHES DUAL SWITCHES WE ARE THE WAVEGUIDE & COAXIAL SWITCH EXPERTS YOUR #1 SOURCE FOR MICROWAVE SWITCHES SINCE 1992 QUALITY, SERVICE & QUICK DELIVERIES UNMATCHED IN THE INDUSTRY 754 Fortune Crescent, Kingston, ON, K7P2T3, Canada 30 Years WHERE YOUR SPECIFICATIONS TURN INTO REALITY ■ OCXO up to 500 MHz ■ Wideband VCXO up to 1 GHz pull up to ±5000 ppm ■ �-derived selectivity crystal filter for high ■ Customized crystal & L/C filter ■ Amplitude matched ■ Phase matched ■ Group delay equalized ■ Std. 1.7/21.4/45/70 pole crystal filters MHz two ■ Low phase noise crystal oscillators CALL OR FAX YOUR REQUIREMENTS FOR A QUOTE ph: (602) 971-3301 fax: (831) 303-2588 www.kselectronics.com 16406 N Cave Creek Road #5 Phoenix, AZ 85032-2919 www.highfrequencyelectronics.com Product Highlights LCD The REP-10CPU-PM is Epsilon’s 10.4"″ display and has a built-in CPU offering significant benefits with respect to dimensions, ruggedization, and video quality. It has an Ethernet connection, a PS2 mouse and keyboard ports. The REP-10CPU-PM combines unmatched mechan- 2-Way Splitter Model WMPD02-8-12-S/N from Werbel Microwave LLC is a 2-way splitter that covers the 8 – 12 GHz band. It is available in a housing measuring 1.8 x 1.5 x 0.8 in. and is available with either N or SMA female connectors. VSWR is specified 1.4:1 or better at all ports. Insertion 52 High Frequency Electronics ical integrity with exceptionally low weight to provide a unique, rugged display solution, especially for applications where space and weight are critical. Epsilon Systems epsilonsystems.com loss is typically 0.5 dB max, and isolation is 18 dB min. Phase balance is specified +/- 4 degrees. The unit is designed for 10W in splitter operation. Made in USA. Werbel Microwave LLC werbelmicrowave.com Product Highlights Test Solution NI announced an early access version of the WLAN Measurement Suite with support for the IEEE 802.11ax (draft 0.1) high-efficiency wireless draft standard. The WLAN Measurement Suite, combined with NI’s RF vector signal transceiver (VST), empowers engineers to measure the performance of their 802.11ax designs confidently in Thermal Simulations CST announced its upcoming Conjugate Heat Transfer (CHT) solver of CST STUDIO SUITE®. The CHT Solver offers accurate thermal and air flow simulations for electromagnetic systems. Heating is an important consideration for many high-power applications and compact electronic systems. Excess heat can damage components and cause thermal expansion that detunes sensitive com- the presence of significant new changes to the 802.11 physical layer specification. National Instruments ni.com ponents. Natural convection and fan cooling can significantly affect how a component heats up, which makes understanding the air flow through and around a device a key part of multiphysics design. CST cst.com 53 Product Highlights PXIe Chassis Keysight Technologies announced a Gen 3 PXIe chassis and set of Gen 3 system components designed for complex, high-performance applications. Doubling the system bandwidth, the new products improve data streaming for capture/playback applications, such as 5G and electronic Signal Generator Vaunix added a new signal generator to its family of Lab Bricks, the LMS-183DX. This new product covers a frequency range of 6-18 GHz in a rugged, portable, palmsized package. The LMS-183DX has a power control range of 80 dB, +10 to -70 dBm, from the 6 to 13 GHz frequency range and a power control range of 65 dB, +10 to -55 dBm, 54 High Frequency Electronics warfare. The Gen 3 products also provide a superior platform for large multi-channel and multi-chassis PXIe test systems for applications, such as MIMO and PA/FEM. Keysight Technologies keysight.com from the 13 to 18 GHz frequency range. This unit typically operates with a voltage stand wave ratio (VSWR) at 1:4:1 (2.0:1 maximum) and weighs less than one pound. Vaunix vaunix.com Product Highlights PRODUCTS TO SOLUTIONS RF Products GaN PA Model AHP-29043925-G1 is one of Ducommun’s newly developed amplifiers that utilize GaN technology in order to achieve high power with small footprint. The amplifier operates within the frequency range of 27 GHz to 31 GHz, with small signal gain at 25 dB and saturated power at 39 dBm. This high power amplifier in Ka band is ideal for satellite and ground communications. Ducommun also offers higher power models of this frequency range. Contact Ducommun sales for more information. Ducommun ducommun.com Ducommun has more than 45 years of experience with the design, testing and manufacturing of coaxial switches and integrated systems Coaxial Switch • 400 MHz to 8 GHz • 10 WCW • Operating temp - 30˚C to +71˚C • Low Insertion Loss • High Isolation • For Use In All Thermal Vacuum Chambers Manually Controlled • DC to 22 GHz • Available in SPDT, DPDT, and up to SP8T • 200 WCW • Great for lab testing Ultra Broadband • SPDT to SP8T • Insertion in Loss KS Electronics kselectronics.com For additional information, contact our sales team at +1 (310) 513-7256 rfsales@ducommun.com CONTACT US Filters and More KS Electronics designs and manufactures Crystal filters, L/C filters, TCXO,VCXO, VC-TCXO and VCOs, and DCXO. Organized for custom work, we offer attention to minute details and customer specifications. KS Electronics has the latest available test equipment from leading manufacturers (calibrated to MIL-C-45662) to do customized testing to all required specifications. All personnel (combined experience of over 75 years in the quartz crystal field) are thoroughly trained to meet stringent customer needs and more. i. Reflective: 20dB min ii. Absorptive: 40dB min • Complete solid state solution • 0.05 GHz to 67 GHz Get info at www.HFeLink.com 55 Product Highlights Socket Ironwood Electronics introduced a new high performance elastomer socket for 0.65mm pitch BGA package. The SG-BGA-9002 socket is designed for a 25mmx25mm package size and operates at bandwidths up to 30 GHz with less than 1dB of insertion loss (GSSG configuration). Contact resistance is typically 20 milliohms per pin. Cable Assemblies San-tron is your one-stop solution for all your highperformance RF and microwave coaxial cable assembly requirements. Building on more than 50 years of design, development, and manufacturing of RF and microwave coaxial connectors, San-tron has become a leading assembly house for the highest quality coaxial cable assemblies. 56 High Frequency Electronics Network analyzer reflection measurements for the G-SS-G case were taken with all except the pins under consideration terminated into 50 Ohms. Ironwood Electronics ironwoodelectronics.com Whether it’s for a high power, high frequency, low loss or low PIM application, San-tron has the experience to assist in configuring the proper interconnect for your needs. San-tron santron.com Product Highlights Enclosures and More Equipto Electronics Corp. is a leading manufacturer of packaging products for the electronics industry. We design and manufacture a wide variety of standard equipment enclosures, from full-size cabinets to sub-racks, at our facility in Aurora, Illinois. Special customer needs are fulfilled by modifications to standard designs or by custom enclosures. As a diverse metal fabricator we have standard product lines, each consisting of multiple variations and accessories, based on the EIA RS-310 standard (often referred to as the 19 inch standard). Many of these products are covered by the company’s numerous patents. Since the company’s founding in 1960, our electronic packaging products have been modular in design. This modularity extends well beyond the EIA RS-310 (19”) “ Many projects can be manufactured and shipped by Equipto Electronics in just five working days. ” Microwave Shielding Effec-veness 140 120 100 Shielding Effec-vness (dB) standard for maximum user flexibility. For example, equipment can be moved from a vertical rack to a sloped front console, work station or instrument cabinet without modification. By adding shelves, drawers, turrets, casters, lift bolts, standard or special panels, outlet strips, fans, blowers, an almost endless list of accessories and other options, our customers can usually create the perfect electronic enclosure out of a catalog of standard products. This saves time and money over a custom packaging solution. Many projects can be manufactured and shipped by Equipto Electronics in just five working days. 80 60 40 20 0 10 16 19 21 23 26 28 31 34 38 Frequency (GHz) Equipto Electronics equiptoelec.com Get info at www.HFeLink.com 57 Product Focus Vector Signal Generator Rohde & Schwarz now offers three new options for its R&S SMW200A high end vector signal generator with microwave frequency ranges from 100 kHz to 12.75 GHz, 100 kHz to 31.8 GHz and 100 kHz to 40 GHz. An option covering the range between 100 kHz and 20 GHz has been available since the summer of 2014. The R&S SMW200A is the only microwave signal generator on the market to combine a baseband generator and RF generator with fading, AWGN and MIMO capabilities in a single box. As a result, it supports numerous challenging aerospace and defense and wireless communications applications. Radar and satellite component and module tests The 40 GHz version of the R&S SMW200A enables users to completely cover the K and Ka bands. The generator’s integrated baseband offers an RF modulation bandwidth of 160 MHz with excellent I/Q flatness and EVM, making it possible to generate signals of the highest modulation quality in the microwave range. It is even easy to generate CW signals with multiple carriers for component tests and wideband QAM-modulated carriers for satellite receiver tests. Complex signals for 5G test setups The R&S SMW200A is helping developers identify potential technologies for accessing 5G wireless networks. The new frequency options enable the instrument to cover the frequency ranges that are currently the focus of 5G development. Its internal baseband section can handle all important digital communications standard including LTE Releases 8 to 11. The signal bandwidth of the R&S 58 High Frequency Electronics SMW200A can even reach 2 GHz when external I/Q signals are used – an ideal feature for wideband 5G applications. Modulated, phase-coherent signals up to 40 GHz Beamforming applications are used to measure active antenna systems such as phased arrays. This requires high quality, phase coherent test signals. The LO coupling of the R&S SMW200A now makes it possible to set up a compact system with up to three phase coherent outputs up to 40 GHz. In addition to the R&S SMW200A, the setup employs two combinations of the R&S SGS100A and R&S SGU100A as additional RF paths up to 40 GHz. The additional signal sources can be easily controlled via the R&S SMW200A GUI. Extensive test applications for wireless communications Many wireless communications applications require complex microwave test signals. The R&S SMW200A now also generates high quality digitally modulated signals up to 40 GHz for direct microwave link applications. If, for example, a 12.75 GHz and a 6 GHz RF path are installed in a single instrument, it is fast and easy to carry out the complex conformance tests specified by many telecommunications standards. The instrument’s integrated test case wizard enables users to configure even complex WCDMA and LTE test scenarios such as blocking tests at the push of a button. The 12.75 GHz frequency option also offers a wear free electronic attenuator. Rohde & Schwarz rohde-schwarz.com Product Highlights Interconnects Delta Electronics Manufacturing Corp. introduced a new brand identity and website that capture the company’s position as a leading global provider of precision interconnect and innovative solutions. “This is an exciting time for Delta, “said Diane Delaney, President & Treasurer. “Creativity and innovation have been at the heart of Delta since my father founded the company in his basement in 1955. Today we’re celebrating that creativity and looking to the future with the launch of our bold new identity and website.” 70 GHz VNA Cable W. L. Gore & Associates (Gore) has continuously expanded the company’s microwave/RF solutions at higher frequencies by designing cable assemblies that are reliable and will perform over time; it is now addressing industry requirements for enhanced performance in the 60-70 GHz range. At the 60-70 GHz range, there is increased need to maintain measurement accuracy, especially in Network Analyzers, Oscilloscopes, Analog Signal From avionics to audio, radar to robotics, Delta delivers precision interconnect and innovative solutions to a broad range of industries where reliability, performance, and durability are of paramount importance. Delta products are found in mission critical systems across our nation’s armed services, and platforms including homeland security, border control and NATO. Delta Electronics deltarf.com Generators, Communication Testing, Chamber Testing, and mm-Wave to name a few key applications. To address these challenges, Gore has developed a new 70 GHz VNA cable assembly; prototypes are currently available for evaluation. Gore gore.com 59 Guest Editorial IMS 2016 Wrap-Up: The Value of Attending the Show By Orwill Hawkins LadyBug Technologies The RF & Microwave industry is a friendly, close-knit community where engineers are supportive of each other and share somewhat openly. The only drawback to being identified with the industry is the occasional question about cooking from those that don’t understand what a microwave really is. A good industry challenge might be to formulate a standard response to these non-technical folks. Explanations can be more difficult than it might seem. IMS The International Microwave Symposium is the world’s largest microwave event and all RF & Microwave engineers would benefit from the show and sessions. Sadly, many engineers that would receive significant benefit, do not attend. Each year I offer guest passes to customers and am often told that they do not attend. One common response is “The boss goes, but I’m not in the budget” or something similar. Many seasoned engineers have never attended the event. The RF & Microwave industry is very welcoming and normally there are extra booths available and discounts are offered to first-time exhibitors. This year all of the available booth space was taken. Many new companies with new products were exhibiting. Our industry is at the forefront of new technology. The fastest signals from the newest cell phones, tablets, cable modems, routers, wearable devices and medical equipment are all under our umbrella. Our industry supplies test equipment, components and ideas today, for the signals and devices that will be delivered tomorrow. The motto “Smaller Faster Better” is definitely alive and well in our industry. We open the door that allows wider bandwidth, new frequency bands and packing more data into the same signal. Technology Advances This year the event was in San Francisco and we saw many microwave engineers that might not normally attend. One particular senior Power Sensor user stopped 60 High Frequency Electronics by our booth. He was amazed at how USB technology has been leveraged into RF test systems. He allowed me show him one of our LB5900 Sensors. I estimate that this engineer was in his late 50’s. He had never used a USB Power Sensor and did not realize that the same or better measurement accuracy is available in a USB Sensor as in Meter & Sensor combinations. He was surprised at the vast array of new features that come with these new sensor designs. Throughout the show are examples of new components and test equipment with the ability to test any signal that can be generated by today’s latest devices. Of course the chip makers were there in full force, bringing the latest and fastest components. These components are the foundation of new products. The engineers, architects and sales staff involved with these RF & Microwave component companies are available to interface with visitors at IMS. Educational Benefits With over 75 technical sessions and workshops, engineers can stay on top of the very latest technologies and present their own papers. This year the symposium introduced the first ever Wearable’s + Wireless Pavilion in which the latest emerging wearable RF & Microwave technology were displayed and discussed. Here is another first from IMS. Have a new engineer in your company? Send them to next year’s RF Bootcamp. This is a great way to learn what the RF & Microwave industry is about. In addition to the array of other events, RFIC and ARFTG conferences were held with concurring timing. These two technical organizations complement the IMSMTT and included in-depth technical sessions covering semiconductor design, measurements and modeling. Companies that engage in the development of new products and technologies or develop test platforms for them would benefit by sending their engineering staff to the International Microwave Symposium. The latest specialized PC board materials, components, test equipment, connectors, automated test systems plus the latest ideas are all under one roof. Given all these benefits, engineers (Continued on page 64) FIVE DAYS THREE CONFERENCES ONE EXHIBITION EUROPEAN MICROWAVE WEEK 2016 EXCEL LONDON, UK 3 - 7 OCTOBER 2016 3-7 OCTOBER 2016 EUROPE’S PREMIER MICROWAVE, RF, WIRELESS AND RADAR EVENT The Exhibition (4th - 6th October 2016) • 8,000 sqm of gross exhibition space • 4,000 key visitors from around the globe • 1,700 - 2,000 conference delegates • In excess of 300 international exhibitors (including Asia and US as well as Europe) The Conferences: • European Microwave Integrated Circuits Conference (EuMIC) • European Microwave Conference (EuMC) • European Radar Conference (EuRAD) • Plus Workshops and Short Courses • In addition EuMW 2016 will include the ‘Defence, Security and Space Forum’ Official Publication: Organised by: Co-sponsored by: Supported by: Co-sponsored by: Co-sponsored by: Co-sponsored by: Co-sponsored by: INTERESTED IN EXHIBITING? For International Sales: Richard Vaughan International Sales Manager E: rvaughan@horizonhouse.co.uk Tel: +44 20 7596 8742 For US Sales: Alyssa Connell Event Coordinator E: aconnell@mwjournal.com Tel: +1 781 619 1930 For more information visit: www.eumweek.com POWER SPLITTERS COMBINERS from 2 kHz to 26.5 GHz 94 as low as ¢ ea.( qty.1000 ) W! NETHE WIDEST BANDWIDTH IN THE INDUSTRY IN A SINGLE MODEL! EP2K1+ 2 to 26.5 GHz EP2K+ 5 to 20 GHz EP2C+ 1.8 to 12.5 GHz The industry’s largest selection includes THOUSANDS of models from 2 kHz to 26.5 GHz, with up to 300 W power handling, in coaxial,flat-pack, surface mount and rack mount housings for 50 and 75Ω systems. From 2-way through 48-way designs, with 0°, 90°, or 180° phase configurations, Mini-Circuits’ power splitter/combiners offer a vast selection of features and capabilities to meet your needs from high power and low insertion loss to ultra-tiny LTCC units and much more. Need to find the right models fast? Visit minicircuits.com and use Yoni2®! It’s our patented search engine that searches actual test data for the models that meet your specific requirements! You’ll find test data, S-parameters, PCB layouts, pricing, real-time availability, and everything you need to make a smart decision fast! All Mini-Circuits’ catalog models are available off the shelf for immediate shipment, so check out our website today for delivery as soon as tomorrow! RoHS Compliant o S Product availability is listed on our website. COMPLIANT Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com 448 rev Q Advertiser Index Company Page Advanced Switch Technology............................................................... 51 American Technical Ceramics.............................................................. 15 AMCOM................................................................................................. 47 API Technologies INMET....................................................................... 1 Avtech.................................................................................................... 51 Azimuth................................................................................................. 25 CDM Electronics..................................................................................... 5 Cernex.................................................................................................... 18 Coilcraft................................................................................................. 11 C. W. Swift & Associates.......................................................................C2 dBm.......................................................................................................... 7 Ducommun............................................................................................ 36 Ducommun............................................................................................ 55 Equipto Electronics............................................................................... 57 EuMW.................................................................................................... 61 Fairview Microwave.............................................................................. 19 G. T. Microwave..................................................................................... 28 Herotek.................................................................................................. 14 KS Electronics....................................................................................... 51 Master Bond.......................................................................................... 50 MECA Electronics................................................................................. 44 Micro Lambda Wireless.......................................................................... 9 Microwave Components........................................................................ 27 Mini-Circuits....................................................................................... 2, 3 Mini-Circuits......................................................................................... 21 Mini-Circuits......................................................................................... 23 Mini-Circuits......................................................................................... 31 Mini-Circuits......................................................................................... 39 Mini-Circuits................................................................................... 62, 63 National Instruments........................................................................... 17 Pasternack............................................................................................. 34 Pasternack............................................................................................. 35 Planar Monolithics Industries............................................................. 29 Pulsar Microwave................................................................................. 20 RelComm Technologies......................................................................... 37 RF Bay................................................................................................... 51 Richardson RFPD.................................................................................C4 SAGE Millimeter.................................................................................. 13 San-tron................................................................................................. 33 Satellink................................................................................................ 51 Sector Microwave.................................................................................. 50 SGMC Microwave.................................................................................C3 Southwest Microwave........................................................................... 24 Temwell................................................................................................. 43 Wenteq Microwave................................................................................ 50 The ad index is provided as an additional service by the publisher, who assumes no responsibility for errors or omissions. n Find Our Advertisers’ Web Sites using HFeLink™ 1. G o to our company information Web site: www.HFeLink.com, or 2. F rom www.highfrequencyelectronics.com, click on the HFeLink reminder on the home page 3. C ompanies in our current issue are listed, or you can choose one of our recent issues 4. F ind the company you want ... and just click! 5. Or ... view our Online Edition and simply click on any ad! PUBLISHER Scott Spencer Tel: 603-472-8261 scott@highfrequencyelectronics.com ADVERTISING SALES — EAST Gary Rhodes Vice President, Sales Tel: 631-274-9530 | Fax: 631-667-2871 grhodes@highfrequencyelectronics.com ADVERTISING SALES — WEST Tim Burkhard Associate Publisher Tel: 707-544-9977 | Fax: 707-544-9375 tim@highfrequencyelectronics.com ADVERTISING SALES—WEST—NEW ACCOUNTS Jeff Victor Tel: 224-436-8044 | Fax: 509-472-1888 jeff@highfrequencyelectronics.com ADVERTISING SALES — CENTRAL Keith Neighbour Tel: 773-275-4020 | Fax: 773-275-3438 keith@highfrequencyelectronics.com ADVERTISING SALES — NEW ACCOUNTS & PRODUCT SHOWCASE Joanne Frangides Tel: 201-666-6698 | Fax: 201-666-6698 joanne@highfrequencyelectronics.com U.K. AND EUROPE Sam Baird Tel: +44 1883 715 697 | Fax: +44 1883 715 697 sam@highfrequencyelectronics.com (Continued from page 60) and managers should plan to spend at least a full day or two at IMS, each and every year. About the Author Orwill Hawkins serves as Vice-President of Marketing at LadyBug Technologies, Santa Rosa, Calif. He has over three decades of management, marketing, engineering and manufacturing experience, and extensive hands-on design and manufacturing experience in the RF, analog, and digital fields. High Frequency Electronics (USPS 024-316) is published monthly by Summit Technical Media, LLC, 3 Hawk Dr., Bedford, NH 03110. Vol. 15 No. 6 June 2016. Periodicals Postage Paid at Manchester, NH and at additional mailing offices. POSTMASTER: Send address corrections to High Frequency Electronics, PO Box 10621, Bedford, NH 03110-0621. Subscriptions are free to qualified technical and management personnel involved in the design, manufacture and distribution of electronic equipment and systems at high frequencies. Copyright © 2016 Summit Technical Media, LLC 64 High Frequency Electronics QUALITY, PERFORMANCE AND RELIABILITY IN PRECISION COAXIAL CONNECTORS BETWEEN SERIES ADAPTERS EDGE LAUNCH CONNECTORS BULKHEAD & PANEL ADAPTERS CABLE CONNECTORS IN SERIES ADAPTERS CUSTOM DESIGNS ADAPTERS · CABLE CONNECTORS · RECEPTACLES · CUSTOM DESIGNS Including These Connector Series 1.85mm 2.4mm DC-65 GHz DC-50 GHz 2.92mm 3.5mm DC-40 GHz DC-34 GHz 7mm SSMA DC-18 GHz DC-40 GHz ISO 9001:2008 SGMC Microwave — The name to count on for Quality, Performance and Reliability! Please contact us today by Phone, Fax or Email. 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