WR3 Dual Directional Coupler for J-Band 220-330 GHz
The AT Microwave AT-DC10-03V is a WR3 waveguide dual directional coupler covering the full J-Band from 220 to 330 GHz. This four-port passive component enables simultaneous sampling of forward and reflected power, providing independent coupled ports for both incident and reflected wave measurement in demanding millimeter-wave and sub-terahertz applications.
The dual-channel architecture proves essential for calibration procedures, network analysis, and real-time power monitoring in frequency ranges where reliable commercial components are scarce. With typical insertion loss of only 2.5 dB and 20 dB directivity, the AT-DC10-03V ensures clean separation between forward and reflected signals while minimizing degradation in critical measurement paths.
Technical Specifications
- Frequency Range: 220 – 330 GHz (full J-Band)
- Coupling Factor: 10 dB
- Insertion Loss: Typical –2.5 dB, Maximum –3.5 dB
- Directivity: Typical 20 dB
- Return Loss: –15 dB
- Coupling Variation: ±2.0 dB across band
- Coupling Accuracy: ±2.5 dB
- Waveguide Interface: WR-3.4 with UG-387/U-M anti-cocking flanges
- Housing Material: Gold-plated brass
- Operating Temperature: –40°C to +85°C
- Weight: Approximately 100 g
Applications
- Network Analysis: Integration into vector network analyzers and scalar measurement systems for precision characterization of RF components at sub-THz frequencies
- 5G/6G Development: Signal monitoring and power measurement in next-generation wireless systems operating at millimeter-wave frequencies
- Defense & SATCOM: Power monitoring in high-frequency communication links and radar systems requiring accurate directional measurement
- Research & Development: Component characterization and electromagnetic testing in academic and industrial laboratories
The gold-plated brass construction guarantees long-term stability and consistent performance across wide temperature ranges, making this coupler suitable for both laboratory and field deployment. The industry-standard WR-3.4 waveguide interface facilitates straightforward integration into existing test benches and production measurement systems. bq-microwave distributes AT Microwave solutions throughout Europe, supporting engineers and researchers working with mmWave and sub-THz technology.