- RF Module
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- Phased Array Radar
- Signal Jammer
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Low Insertion Loss Single Directional Coupler for Reliable RF Isolation
A single directional coupler is a critical passive device designed for directional signal transmission and isolation. Its core function is to enable highly efficient unidirectional signal transfer while rigorously suppressing reverse reflections and interference, significantly enhancing signal integrity and noise immunity.
Constructed with low-loss dielectric materials and optimized circuit design, this component delivers stable high performance across a broad frequency range , featuring ultra-low insertion loss and exceptional directivity to maximize signal efficiency while blocking backflow interference. With high-power handling (up to 100W CW) and an extended operating temperature range (-55°C to +85°C), it thrives in harsh environments.
The single directional coupler can be used in many applications like 5G Base Stations to isolate signals in antenna feed systems.; Fiber Optic Networks to prevent optical module degradation from reflected light; Military Radar & EW Systems to protect transmitters from reflected power damage.
Housed in compact, hermetic metal enclosures, it supports high-density integration, while industrial-grade shock/corrosion resistance guarantees long-term reliability. An indispensable component in modern communication, defense, aerospace, and industrial control systems.
| Electrical | Frequency(GHz) | |
| Coupling(dB typ./max.) | DC~0.3 | 25/- |
| 0.3~0.5 | 17/- | |
| 0.5~4 | 10/10±2.5 | |
| 4~12.4 | 10/10±1.8 | |
| Insertion Loss(dB vtyp./max.) | DC~0.3 | 0.2/0.7 |
| 0.3~0.5 | 0.5/0.9 | |
| 0.5~4 | 1/1.5 | |
| 4~12.4 | 1/1.3 | |
| Directivity(dB typ./max.) | DC~0.3 | 15/- |
| 0.3~0.5 | 15/- | |
| 0.5~4 | 15/14 | |
| 4~12.4 | 15/14 | |
| VSWR (Mainline)(typ./max.) | DC~0.3 | 1.2/1.5 |
| 0.3~0.5 | 1.2/1.5 | |
| 0.5~4 | 1.3/1.5 | |
| 4~12.4 | 1.3/1.6 | |
| VSWR (Coupling)(typ./max.) | DC~0.3 | 1.2/1.5 |
| 0.3~0.5 | 1.2/1.5 | |
| 0.5~4 | 1.3/1.5 | |
| 4~12.4 | 1.3/1.8 | |
| Mechanical | |
| Size | 111.8*17.8*12.7mm |
| Connectors | SMA female |
| Mounting | 2-Φ2.4mm through-hole |
| Average Power | 30W |
| Operating Temperature | -55~+85℃ |
| Non-operating Temperature | -55~+100℃ |