BD131B: Temperature-Stable Bidirectional Detector for R22 Waveguide, with DC Amplifiers

BD131B is a bidirectional detector intended for simultaneous sampling of incident and reflected waves in high-power 2450 MHz industrial applications using an R22 (WR430) rectangular waveguide. The bidirectional detector combines the following components:

  • 4-port directional coupler
  • Attenuators
  • Tunnel 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. The standard options for maximum working power are 1 kW, 10 kW and 30 kW. In addition to these, customized maximum powers are optionally available.

The use of tunnel diodes provides the bidirectional detector with improved temperature stability.

BD131B Bidirectional Detector (BD132B shown)