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
  • Attenuators
  • 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.

Typical Transfer Curve, TA=25°C, f=915 MHz