Product Focus
Microwave/millimeter-wave components
MMIC VCOs
from dc to 4 GHz are priced at $249.95 each,
in quantities under 10 units.
Mini-Circuits
(718) 934-4500
www.minicircuits.com
UMTS SAW filters
Hittite Microwave Corporation has
extended its line of GaAs HBT MMIC
VCOs with fundamental, half- and quarterfrequency outputs. These SMT-packaged
VCOs are ideal for microwave applications
from 11.5 GHz to 14.9 GHz. The HMC515LP5E, HMC529LP5E, and HMC531LP5E
GaAs HBT MMIC VCOs are housed in
RoHS-compliant, 5 mm x 5 mm leadless
SMT packages with a common pinout.
These VCOs integrate resonators, negative
resistance devices and varactor diodes.
The HMC515LP5E, HMC529LP5E and
HMC531LP5E MMIC VCOs tune from
11.5 GHz to 12.5 GHz, 12.4 GHz to
13.4 GHz, and 13.6 GHz to 14.9 GHz,
respectively. Output power and phase noise
performance are excellent over temperature,
shock, and process due to the oscillator’s
monolithic structure. If the prescaler function is not required, it can be disabled to
conserve current. This family of fully integrated VCOs requires no external components,
provides output power of +7 dBm to +10 dBm,
and delivers very low SSB phase noise of
-110 dBc/Hz at 100 kHz offset.
Samples and evaluation PC boards for
all SMT packaged products are available.
Released data sheets are available on Hittite’s
web site.
Hittite Microwave
(978) 250-3343
www.hittite.com
Fixed attenuator
Mini-Circuits’
50 Ω, 40 dB, 100
W fixed attenuators
are suitable for
testing high-power
components used
in communication
systems. These
attenuators are
ideal when testing high-power amplifiers
while using low-power test equipment. With
40 dB attenuation, they can also be used
as a termination for high-power amplifiers.
The BW-40N100W attenuators operating
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With a footprint of only 1.4 mm x 1.1 mm,
the RX filters of types B9408 and B9411
for UMTS handsets mark another milestone
in miniaturization by EPCOS. Versions
with impedances of 100 Ω and 200 Ω are
available to match the chipset used. Typical insertion loss in the passband (2.11 GHz
to 2.17 GHz) is 1.6 dB.
Error vector magnitude, a critical parameter
in UMTS systems, is less than 2%. Attenuation in the TX path (1.92 GHz to 1.98 GHz) is
48 dB. Attenuation is at least 31 dB in the
range from 2.5 GHz to 6.0 GHz. Samples
of the new filters are available.
EPCOS
+49 89 636 09
www.epcos.com
SMD inductor/transformer
The DR359 series surface-mount inductor/transformer from Datatronics features
a unique dual coil design in a compact, lowprofile package that makes it ideal for a wide
range of applications in mini and handheld
electronic devices.
With a low seated profile standing only
0.315 in. (8 mm) above the circuit board in
a square package, the inductor/transformer
is a versatile magnetic component featuring
both parallel and series functionality. The
DR359’s dual coil design allows circuit
designers to takeadvantage of its ability to
support circuit requirements for either an
inductor or transformer. The inductor/transformer features an inductance range from
0.47 H to 1000 H. The parallel windings
feature an inductance range from 0.419 H
to 1005.0 H (+20%), with a DCR from
0.00195 Ω to 1.6600 Ω. The series windings inductance ranges from 1.676 H to
www.rfdesign.com
4020 H (+25%), with a DCR from 0.0078 Ω to
6.640 Ω. Custom-designed transformers can
be specified to meet unique circuit requirements.The DR359 combines high-performance and superior reliability based on its
precision coil-winding technology and its
advanced high-temperature materials packaging. All materials meet UL94V-0 specifications for operating in harsh conditions.
The inductor/transformer measures 0.493 inches (12.5 mm) square. With its flat-top surface,
it is ideal for high-speed automated pickand-place circuit board assembly equipment
and is available in a choice of tube or tapeand-reel packaging. It is priced from $0.25
each in typical production volume. Volume
OEM pricing is available upon request.
Datatronics
(951) 928-7700
www.datatronics.com
Voltage-controlled SAW oscillator
A voltage-controlled SAW oscillator
(VCSO) from Crystek Crystals Corporation operates at 1 GHz. Crystek designed
the module using FR5 PCB and SAW crystal
technology to provide a low noise, low jitter VCSO with true sine wave output. The
resulting oscillator features –135 dBc/Hz
phase noise at 10 kHz offset.
The CVCSO-914-1000 comes in a 9 mm x
14 mm SMT package. It uses a +5 V supply
and generates a true sine wave with +7 dBm
minimum output power and 50 ppm minimum absolute pull range (APR). The VCSO
has no subharmonics; second harmonic is
–20 dBc typical. The oscillator operates from
–20 °C to +70 °C.
Applications include PLL frequency translation. Price is $125.00 in small volumes.
Crystek Crystals Corp.
(800) 237-3061
www.crystek.com
Coaxial resonator VCO
Z-Communications’ coaxial resonatorbased VCO, the CRO1959A-LF, has a frequency range of 1932 MHz to 1987 MHz.
It is designed to meet the high data rate
applications of point-to-multipoint and
terrestrial radios as carrier generators. This
module offers a phase noise performance
of –113 dBc/Hz at 10 kHz away from the
carrier. CRO1959A-LF has good tuning
linearity over the tuning range and provides
superior harmonic suppression.
This particular CRO model comes in an
industry-standard MINI package measuring 0.50 inches x 0.50 inches x 0.22 inches.
This VCO is ideal for automated surfacemount assembly and reflow; it is available
March 2006
in tape and reel packaging for production requirements. Pricing starts at $29.95.
Z-Communications
(858) 621-2700
www.zcomm.com
Silicon oscillators
require ultrafast settling time, high linearity,
low insertion loss, high isolation, and small
size at a low price point. The fast settling
time of the switch allows time-sensitive
systems to respond faster without a reduction
in RF performance. Test and measurement
applications that require a quick response
time can use the MASWSS0192 with its
nominal settled on resistance of 2.5 Ω with
less than a 0.15 Ω change after only 15 μs.
Other performance specifications for this
SPDT are its high power handling with P1dB
of 28.5 dBm, low typical insertion loss of
0.18 dB, and high isolation of 24 dB.
The device is fabricated on a low-cost
0.5 μm gate-length GaAs pHEMT process
and features full passivation for increased
reliability. Its SC-70 (SOT-363) packaging
is lead-free. Each MASWSS0192 is 100%
RF tested, as well as dc tested for gate lag to
ensure performance compliance.
The MASWSS0192 is available and is
priced at $0.70 in quantities of 10,000.
MA/COM
(978) 442-5000
www.macom.com
Microwave coaxial cable
Maxim Integrated Products has introduced the MAX7387-MAX7391 family of
silicon oscillators that offers the supervisory
functions of medium-accuracy silicon oscillators in a single, surface-mount microMAX
package. These tiny devices switch frequencies and range from 32 kHz for low-power
modes, to 16 MHz in high-speed mode.
The oscillators are ideal for high-reliability systems because they do not use external
high-impedance nodes found in ceramic
resonator circuits. This makes them less susceptible to dirt, humidity and high-EMI/ESD
conditions. Also, because the oscillators do not
rely on mechanical methods, they are less sensitive to environmental concerns. Integrated
into this oscillator family is a reset output to
interface with a microcontroller, power-fail
detection to alert the system of an impending
power failure, and a watchdog to monitor the
health of the system.
Total accuracy for the family is ±4%
over -40 °C to +125 °C, and ±2.75% over
0 °C to +85 °C. At a supply voltage of 3.3 V,
the supply current is just 2.9 mA for the
16 MHz device. Prices start at $0.65 for
10000-unit quantities.
Maxim Integrated Products
(408) 737-7600
www.maxim-ic.com
SPDT switch
M/A-COM’s RoHS-compliant SPDT
switch is designed for applications that
58
As examples of electrical performance,
a 0.141 inch, O/D copper or aluminum semirigid will handle in excess of 170 W at 5
GHz with 91 dB per 100 m attenuation and a
top frequency limit beyond 20 GHz.
For pricing and availability, contact Atlantic
Microwave.
Atlantic Microwave
+44 (0)1376 550220
www.atlanticmicrowave.co.uk
SMD inductors
Tabtronics has added to its line of fixed
chip inductors for high reliability surfacemount applications. The parts are in compliance with MIL-PRF-83446. They are also
space agency qualified (ESA 3201/008).
The parts also have excellent Q values,
even at high frequencies, and very high selfresonant frequencies. Operating in a frequency
range of 200 kHz to 1 GHz, the parts are
available with or without tab terminations.
The parts weigh 0.07 g, and RoHS versions
are available on request. Pricing in 1000-piece
lots is as low as $7.00 per unit.
Tabtronics
(585) 243-4331
www.tabtronics.com
Phase locked oscillator
Atlantic Microwave Ltd. has introduced
a series of semi-flexible and semi-rigid
cables. Including all the popular outside
diameters of 0.034 inches, 0.047 inches, 0.086
inches, 0.141 inches and 0.250 inches, the
collection includes outer conductor materials of copper, aluminum and braided copper/
tin composite, each with its own respective
properties of flexibility and bend repetition.
Common to all standard types is the
characteristic impedance of 50 Ω, PTFE
dielectric material and an operating temperature range of –55 °C +125 °C.
The aluminum outer cables are tin plated
as standard to optimize soldering, while
copper types come in a choice of plain or
tin-plated. The series is available in lengths
up to 50 feet.
Beyond the standard range are a number
of options with alternative impedances, FEP
jackets, silver-plated inner and outer conductors and low loss variants.
www.rfdesign.com
JWM Engineering Group has expanded
its microwave phase locked oscillator line
with a 902 MHz to 910 MHz version.
Model 902 PLL joins the JWM model 1152
and model 5112 PLL units designed to replace
crystal local oscillator chains in microwave
receivers and transmitters.
Using an external reference oscillator, model 902 can provide one part in
10 million frequency stability with a
temperature-compensated oscillator, or one
part in one billion when using an ovencontrolled crystal oscillator. A rubidium
oscillator can provide a stability of one part
in 100 billion. Users must supply an appropriate 10 MHz reference source for their
application.
The 902 PLL can be used as a local oscillator in microwave receivers, transmitters,
transverters and signal generators. The PLL
supports 144 MHz, 50 MHz, 28 MHz and
14 MHz intermediate frequencies.
Reverse voltage protection is a standard
feature. A three-section low-pass filter with a
–3 dB cutoff frequency at 1.2 GHz suppresses
second- and third-order harmonic frequencies at the RF output port. A cast aluminum
RF-tight enclosure provides the best possible
suppression of stray RF leakage.
The model 902 cost is $249.95 each.
JWM Engineering Group
(949) 713-6367
www.jwmeng.com
March 2006