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- WA：+86 17702828378
- Mail：sales@yusntech.com
- Address：Room 3, Floor 1, Building 13, No. 69, East Section of Hangkong Road, Dongsheng Subdistrict, Shuangliu District, Chengdu City, Sichuan Province.
Directional Couplers
Yusntech Directional Couplers are high-performance RF and microwave components designed for signal monitoring, power sampling, testing, and measurement applications. Covering frequencies from kHz to 67 GHz with coupling values from 6 dB to 60 dB and power handling up to 2000 W, our directional couplers deliver low insertion loss, excellent directivity, and reliable performance. Ideal for satellite communications, radar systems, wireless infrastructure, aerospace, defense, EMC testing, and RF laboratories. Custom frequency ranges, coupling levels, power ratings, and connector options are available.
Features
• Wide frequency range up to 67 GHz
• Multiple coupling values (6 dB to 60 dB)
• Low insertion loss, high efficiency
• High power handling up to 2000 W
• Custom design & ODM supported
Applications
• RF signal monitoring & sampling
• Wireless and telecom systems
• Test & measurement equipment
• Radar and microwave systems
• RF system integration
Model↑↓ | Freq. (GHz) | Coupling (dB) | IL. (dB.Max) | VSWR (Max.) | Power (W) | Connector | Inquiry |
|---|---|---|---|---|---|---|---|
| YSDC200-9K-R5-40-N | 9K-0.5 | 40 ±1.0 | 0.5 | 1.3 | 200 | N-Type | Inquiry |
| YSDC200-1M-R5-40-N | 0.001-0.5 | 40±1.0 | 0.6 | 1.3 | 200 | N-Type / SMA | Inquiry |
| YSDC1K-2M-30M-60-N | 0.002-0.03 | 60 ±1.0 | 0.1 | 1.1 | 1000 | N-Type / SMA | Inquiry |
| YSDC2K-12M-14M-55-N | 0.012-0.014 | 55 ±1.0 | 0.15 | 1.2 | 2000 | N-Type / SMA | Inquiry |
| YSDC500-20M-1-50-N | 0.02-1 | 50 ±1.5 | 0.3 | 1.2 | 500 | N-Type | Inquiry |
| YSDC1K-80M-1-60-N | 0.08-1 | 60 ±1.0 | 0.3 | 1.2 | 1000 | N-Type / SMA | Inquiry |
| YSDC500-80M-1-50-N | 0.08-1 | 50 ±1.0 | 0.3 | 1.2 | 500 | N-Type | Inquiry |
| YSDC200-R2-R7-30-S | 0.2-0.7 | 30 ±1.0 | 0.4 | 1.3 | 200 | SMA | Inquiry |
| YSDC200-R1-R6-40-N | 0.4-2.7 | 40±1.0 | 0.3 | 1.3 | 200 | N-Type | Inquiry |
| YSDC200-R4-2R7-40-N | 0.4-2.7 | 40±1.5 | 0.5 | 1.5 | 200 | N-Type | Inquiry |
| YSDC150-R4-3R9-15-N | 0.4-3.9 | 15±1.5 | 0.5 | 1.25 | 150 | N-Type / SMA | Inquiry |
| YSDC200-R4-3R9-40-N | 0.4-3.9 | 39±1.5 | 0.3 | 1.25 | 200 | N-Type | Inquiry |
| YSDC200-R4-4R2-40-N | 0.4-4.2 | 39±1.8 | 0.35 | 1.3 | 200 | N-Type | Inquiry |
| YSDC30-R4-6-30-S | 0.4-6 | 30±1.5 | 0.6 | 1.3 | 30 | SMA | Inquiry |
| YSDC2K-R5-2-50-L52 | 0.5-2 | 50±1.0 | 0.35 | 1.25 | 2000 | L52-Type | Inquiry |
| YSDC50-R5-2-10-S | 0.5-2 | 10±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-R5-2-20-S | 0.5-2 | 20±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-R5-2-30-S | 0.5-2 | 30±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-R5-2-6-S | 0.5-2 | 6±1.0 | 0.4 | 1.25 | 50 | SMA | Inquiry |
| YSDC30-R5-6-20-S | 0.5-6 | 20±1.0 | 0.5 | 1.3 | 30 | SMA | Inquiry |
| YSDC600-R5-6-40-N | 0.5-6 | 40±1.0 | 0.5 | 1.3 | 600 | N-Type | Inquiry |
| YSDC20-R5-8-10-S | 0.5-8 | 10±1.0 | 1.2 | 1.3 | 20 | SMA | Inquiry |
| YSDC50-R5-18-10-S | 0.5-18 | 10 ±1.0 | 1.5 | 1.6 | 50 | SMA | Inquiry |
| YSDC50-R5-18-20-S | 0.5-18 | 20 ±1.0 | 1.5 | 1.6 | 50 | SMA | Inquiry |
| YSDC50-R5-18-30-S | 0.5-18 | 30 ±1.5 | 1.6 | 1.6 | 50 | SMA | Inquiry |
| YSDC20-R5-18R5-10-S | 0.5-18.5 | 10 ±1.0 | 1.6 | 1.6 | 20 | SMA | Inquiry |
| YSDC50-R6-3R9-10-S | 0.6-3.9 | 10±1.5 | 0.5 | 1.2 | 50 | SMA | Inquiry |
| YSDC500-R7-3-40-N | 0.698-3 | 40±2.0 | 0.3 | 1.3 | 500 | N-Type / SMA | Inquiry |
| YSDC50-R8-2R5-10-S | 0.8-2.5 | 10±1.0 | 0.5 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-R8-2R5-6-S | 0.8-2.5 | 6±1.0 | 0.5 | 1.2 | 50 | SMA | Inquiry |
| YSDC200-R8-3R5-40-N | 0.8-3.5 | 40±1.5 | 0.35 | 1.4 | 200 | N-Type | Inquiry |
| YSDC100-R8-12R75-10-N | 0.8-12.75 | 10 ±1.0 | 1.5 | 1.4 | 100 | N-Type | Inquiry |
| YSDC100-R8-12R75-10-S | 0.8-12.75 | 10 ±0.5 | 1.5 | 1.5 | 100 | SMA | Inquiry |
| YSDC50-1-4-10-S | 1-4 | 10 ±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-1-4-20-S | 1-4 | 20 ±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-1-4-30-S | 1-4 | 30 ±1.0 | 0.35 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-1-4-6-S | 1-4 | 6±1.0 | 0.5 | 1.2 | 50 | SMA | Inquiry |
| YSDC100-1-12-20-N | 1-12 | 20±1.0 | 0.8 | 1.4 | 100 | N-Type | Inquiry |
| YSDC50-1-18-10-S | 1-18 | 10 ±1.0 | 1.2 | 1.6 | 50 | SMA | Inquiry |
| YSDC50-1-18-20-S | 1-18 | 20 ±1.0 | 1.2 | 1.6 | 50 | SMA | Inquiry |
| YSDC400-2-4-40-N | 2-4 | 40±1.5 | 0.5 | 1.3 | 400 | N-Type / SMA | Inquiry |
| YSDC500-2-4-50-L29 | 2-4 | 50±1.0 | 0.4 | 1.3 | 500 | 7/16 DIN | Inquiry |
| YSDC250-2-6-40-N | 2-6 | 40±2.0 | 0.6 | 1.3 | 250 | N-Type / SMA | Inquiry |
| YSDC300-2-6-40-N | 2-6 | 40 ±1.0 | 0.3 | 1.3 | 300 | N-Type / SMA | Inquiry |
| YSDC50-2-8-10-S | 2-8 | 10 ±1.0 | 0.5 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-2-8-20-S | 2-8 | 20 ±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-2-8-30-S | 2-8 | 30 ±1.0 | 0.4 | 1.2 | 50 | SMA | Inquiry |
| YSDC50-2-8-40-S | 2-8 | 40 ±1.0 | 0.3 | 1.4 | 50 | SMA | Inquiry |
| YSDC50-2-8-6-S | 2-8 | 6±1.0 | 1.8 | 1.5 | 50 | SMA | Inquiry |
| YSDC50-2-18-10-S | 2-18 | 10±1.0 | 0.7 | 1.5 | 50 | SMA | Inquiry |
| YSDC50-2-18-20-S | 2-18 | 20±1.0 | 0.7 | 1.5 | 50 | SMA | Inquiry |
| YSDC400-3-10-30-N | 3-10 | 30 ±1.0 | 0.6 | 1.4 | 400 | N-Type / SMA | Inquiry |
| YSDC200-3R3-3R8-30-N | 3.3-3.8 | 30 ±2.0 | 0.3 | 1.3 | 200 | N-Type | Inquiry |
| YSDC400-4-6-40-N | 4-6 | 40±1.5 | 0.6 | 1.3 | 400 | N-Type / SMA | Inquiry |
| YSDC20-4-8-40-S | 4-8 | 40 ±0.5 | 0.3 | 1.3 | 20 | SMA | Inquiry |
| YSDC30-4-8-20-S | 4-8 | 20 ±1.25 | 0.3 | 1.25 | 30 | SMA | Inquiry |
| YSDC20-4-20-20-S | 4-20 | 20±1.0 | 0.6 | 1.6 | 20 | SMA | Inquiry |
| YSDC120-6-10-40-N | 6-10 | 40±1.0 | 0.3 | 1.4 | 120 | N-Type / SMA | Inquiry |
| YSDC200-6-18-30-N | 6-18 | 30±1.5 | 0.5 | 1.5 | 200 | N-Type | Inquiry |
| YSDC250-6-18-40-N | 6-18 | 40±2.0 | 0.7 | 1.4 | 250 | N-Type / SMA | Inquiry |
| YSDC50-6-18-10-S | 6-18 | 10 ±1.0 | 1.0 | 1.5 | 50 | SMA | Inquiry |
| YSDC50-6-18-20-S | 6-18 | 20 ±1.0 | 0.6 | 1.5 | 50 | SMA | Inquiry |
| YSDC50-6-18-30-S | 6-18 | 30 ±1.0 | 0.6 | 1.5 | 50 | SMA | Inquiry |
| YSDC80-6-18-30-S | 6-18 | 35±1.0 | 0.5 | 1.5 | 80 | SMA | Inquiry |
| YSDC50-6R1-7-10-S | 6.1-7 | 10 ±1.0 | 0.5 | 1.2 | 50 | SMA | Inquiry |
| YSDC20-18-40-20-K | 18-40 | 20±1.0 | 1.5 | 1.5 | 20 | 2.92 mm | Inquiry |
| YSDC30-18-40-10-K | 18-40 | 10 ±1.0 | 1.6 | 1.6 | 30 | 2.92 mm | Inquiry |
| YSDC30-18-40-20-K | 18-40 | 20 ±1.0 | 1.1 | 1.6 | 30 | 2.92 mm | Inquiry |
| YSDC30-18-40-30-K | 18-40 | 30 ±1.2 | 1.0 | 1.6 | 30 | 2.92 mm | Inquiry |
| YSDC12-40-67-10-V | 40-67 | 10 ±1.0 | 2.0 | 1.8 | 12 | 1.85 mm | Inquiry |
| YSDC12-40-67-20-V | 40-67 | 20 ±1.0 | 1.5 | 1.8 | 12 | 1.85 mm | Inquiry |
| YSDC12-40-67-30-V | 40-67 | 30 ±1.0 | 1.5 | 1.8 | 12 | 1.85 mm | Inquiry |
FAQ
A directional coupler is a passive RF and microwave component used to sample, monitor, or measure signal power in a transmission line without significantly affecting the main signal path. RF directional couplers are widely used in radar systems, satellite communications, wireless infrastructure, aerospace platforms, electronic warfare systems, and RF test and measurement applications. By coupling a predefined portion of the signal, directional couplers enable accurate power monitoring, signal analysis, and system diagnostics.
Although both devices manage RF signals, a directional coupler samples only a small portion of the transmitted signal while allowing most of the power to continue through the main line. A power divider splits the input power into multiple output paths. Directional couplers are commonly used for RF signal monitoring, VSWR measurements, power detection, and transmitter testing, whereas power dividers are primarily used for signal distribution.
Directional couplers are available with a wide range of coupling values, including 6 dB, 10 dB, 20 dB, 30 dB, 40 dB, 50 dB, and 60 dB. Lower coupling values provide higher sampled signal levels, while higher coupling values minimize impact on the main transmission path. Selecting the correct coupling factor depends on the application, operating frequency, and power monitoring requirements.
Yusntech offers broadband directional couplers covering frequencies from 9 kHz to 67 GHz. These RF and microwave directional couplers are suitable for low-frequency communications, VHF/UHF systems, L-band, S-band, C-band, X-band, Ku-band, Ka-band, and millimeter-wave applications. Custom frequency ranges can also be designed to meet specific project requirements.
Directivity measures a coupler’s ability to distinguish between forward and reflected signals. High directivity directional couplers provide more accurate signal sampling and power measurements, making them essential for RF testing, antenna characterization, transmitter monitoring, and high-performance communication systems. Higher directivity generally results in improved measurement accuracy and system reliability.
Directional couplers are widely used in satellite communication systems, radar and defense platforms, aerospace electronics, telecommunications networks, wireless base stations, RF laboratories, EMC testing facilities, semiconductor testing, and microwave research projects. Their ability to monitor RF power and signal quality makes them a critical component in modern RF and microwave systems.
Yes. High-power directional couplers are specifically designed for applications requiring substantial power handling capabilities. Yusntech offers models supporting power levels up to 2000 watts, making them suitable for high-power transmitters, radar installations, satellite earth stations, broadcast systems, and industrial RF equipment.
Directional couplers are available with SMA, N-Type, 2.92 mm (K), 1.85 mm (V), 7/16 DIN, and other industry-standard RF connectors. Connector selection depends on operating frequency, power level, environmental requirements, and system integration needs. Custom connector configurations are also available upon request.
Yes. Yusntech specializes in custom RF and microwave directional coupler solutions. We can tailor frequency ranges, coupling values, power ratings, connector interfaces, package configurations, and environmental specifications to meet the requirements of satellite communications, aerospace, defense, telecom infrastructure, and RF test systems.
When selecting a directional coupler, key factors include operating frequency range, coupling value, insertion loss, directivity, VSWR, power handling capability, connector type, and environmental conditions. Yusntech’s engineering team can assist in identifying the optimal RF directional coupler for applications such as power monitoring, signal sampling, radar systems, SATCOM terminals, wireless infrastructure, and laboratory testing.