BD214B: Bidirectional Detector for R9 Waveguide, with DC Amplifiers
BD214B is a bidirectional detector intended for simultaneous sampling of incident and reflected waves in high-power 900 MHz industrial applications using an R9 (WR975) rectangular waveguide. The bidirectional detector combines the following components:
- 4-port directional coupler
- Zero-bias Schottky diode detectors
- Low noise operational amplifiers
The unit delivers two DC voltages in the range 0 to approximately 9 V. The voltages are functions of the powers associated with waves propagating in opposite directions in the parent waveguide.