MMIC/RFIC Test Products
Marki Microwave offers the most complete and most high performance product portfolio available in the world
for splitting, combining, coupling, and mode converting signals for the purpose of testing RFICs and MMICs.
Our products offer superior isolation, directivity, amplitude flatness, and bandwidth suitable for the rigorous
harmonic testing necessary for the evaluation and production verification of 4G LTE products. Eliminate
uncertainty and guarantee your customer’s success by relying on Marki high performance power
dividers/combiners, couplers, baluns, and bias tees.
Bridge Couplers and Power Combiners
Marki Microwave took a classic RF circuit, the SWR bridge, and combined it with our unparalleled baluns and
high frequency packaging skills to create a line of bridge couplers with the highest directivity in the world.
Then we modified the circuit to create bridge power combiners with industry leading isolation, in both
connectorized and surface mount packages. They cover a broader frequency range, to lower frequencies,
than stripline couplers or Wilkinson power dividers. These devices are ideally suited for measuring VSWR,
minimizing harmonic distortion between synthesizers for multitone intermodulation testing, and
transmit/receive path multiplexing. Contact support@markimicrowave.com for application assistance.
Model
Frequency
Coupling (dB)
CBR16-0003
CBR16-0006
CBR16-0012
PBR-0003
PBR-0006
PBR-0012
PBR-0003SMG
PBR-0006SMG
200 kHz to 3 GHz
200 kHz to 6 GHz
200 kHz to 12 GHz
300 kHz to 3 GHz
300 kHz to 6 GHz
300 kHz to 12 GHz
5 MHz to 3 GHz
5 MHz to 6 GHz
16
16
16
6
6
6
6
6
Directivity/
Isolation (dB)
40
38
32
45
40
40
40
35
Total Insertion
Loss [dB]
1.5
1.7
2
7.25
7.5
7.5
7.5
7.7
Return Loss
(dB)
25
22
17
17
15
15
15
15
Surface
Mount
N
N
N
N
N
N
Y
Y
Low Loss Airline Couplers
Responding to demand for high power, low loss, high directivity, high frequency couplers suitable for load pull
testing of power amplifiers, Marki Microwave designed the CA line of airline couplers. These are suitable both
for load pull testing of amplifiers, and harmonic testing of low frequency power amplifiers during test.
Model
Frequency (GHz)
CA-18
CA-26
CA-40
CA-50
Up
Up
Up
Up
to
to
to
to
18
26
40
50
Ave Power
Handling (W)
200
50
20
15
Directivity
(dB)
22
24
24
24
Insertion Loss
[dB]
0.35
0.35
0.5
0.5
Return Loss
(dB)
21
27
27
27
Connector
N
SMA
2.92 mm
2.4 mm
215 Vineyard Court, Morgan Hill, CA 95037 | Ph: 408.778.4200 | Fax 408.778.4300 | info@markimicrowave.com
Stripline Directional and Dual Directional Couplers
Marki has combined unique design/layout methodology, packaging capability, and 3D CAD optimization to offer
stripline couplers with high directivity, low insertion loss, low return loss, and low amplitude ripple across
broad bandwidths. A sample of our more than 15 catalog models of couplers are shown below. Custom
designs are available with 10-12 week lead times and competitive prices.
Model
Frequency (GHz)
Coupling (dB)
C20-0R520
C13-0150
C10-0667
CD-0114 (dual)
0.5 to 20
1 to 50
6 to 67
0.7 to 14
20
13
10
10
Directivity
(dB)
22
16
17
23
Amplitude
Flatness [dB]
±0.75
±0.75
±0.8
±0.6
Return Loss
(dB)
21
19
17
22
Max Insertion
Loss (dB)
1.5
2.2
2.5
3
2, 3, and 4 Way Wilkinson Power Dividers
In addition to classic two way Wilkinson power dividers, Marki also offers four way power dividers and rare
three way power dividers. These power dividers cover broad bandwidths with excellent isolation and balance.
Additionally four models are available as surface mount components. A representative sample of our 25+
catalog models is shown below. Custom designs are available with 10-12 week lead times and competitive
prices.
Model
Frequency (GHz)
n-way
Isolation (dB)
PD-0R426
PD-0165
PD-0535SM
PD3-0126
PD4-0150
0.4 to 26
1 to 65
5 to 35
1 to 26
1 to 50
2
2
2
3
4
22
16
17
23
20
Amplitude
Balance [dB]
±0.05
±0.25
±0.25
±0.3
±0.5
Return Loss
(dB)
18
14
14
14
14
Surface
Mount
N
N
Y
N
N
Baluns (180°) and Quadrature Hybrid (90°) Couplers
Long regarded as the premier mixer supplier in the industry, Marki has mastered the design and
manufacturing capability for the best baluns in the world. Models are available in connectorized or surface
mount packages across broad frequency ranges with superior common mode rejection. Additionally, our
packaging and 3D CAD capability lead to excellent quadrature hybrid couplers. A small sample is shown here.
Model
Frequency
BAL-0009SMG
BAL-0010
BAL-0106
BAL-0520
BALH-0006
BALH-0009SMG
BAL-0067
QH-0R714
QH-0867
500 kHz to 9 GHz
200 kHz to 10 GHz
1.2 GHz to 6 GHz
5 GHz to 20 GHz
200 kHz to 6 GHz
500 kHz to 9 GHz
200 kHz to 67 GHz
0.7 to 14 GHz
8 to 67 GHz
Amplitude
Balance [dB]
±0.6
±0.2
±0.1
±0.2
±0.1
±0.8
±0.7
±0.2
±0.6
Phase Balance
[Degrees]
±5
±2
±0.2
±0.3
±1
±5
±4
±2
±6
Total Insertion
Loss [dB]
7.5
8
3.6
4.5
5.5
5.5
6
4.2
4.2
Common Mode
Rejection (dB)
26
35
38
30
40
25
27
Surface
Mount
Y
N
N
N
N
Y
N
N
N
Bias Tees
Marki bias tees offer low, flat, resonance-free insertion loss to 65 GHz. More than 30 catalog models of bias
tees are available both as connectorized units and as surface mount packages, and in high power (2 amp, 50
volt) versions. A very small sample is shown below.
Model
Frequency
Insertion Loss [dB]
DC Current [mA]
DC Port Isolation [dB]
DC Voltage [V]
BT-0065
BT1-0026
BT2-0050
4 kHz to 65 GHz
50 kHz to 26.5 GHz
100 kHz to 50 GHz
1.8
1
1.5
500
1000
2000
30
30
30
30
50
50
215 Vineyard Court, Morgan Hill, CA 95037 | Ph: 408.778.4200 | Fax 408.778.4300 | info@markimicrowave.com