BD111: Fast Temperature-Stable Bidirectional Detector for R26 Waveguide

BD111 is a bidirectional detector intended for simultaneous sampling of incident and reflected waves in high-power 2450 MHz industrial applications using an R26 (WR340) rectangular waveguide. The bidirectional detector combines the following components:

  • 4-port directional coupler (70-dB coupling)
  • Attenuators
  • Tunnel diode detectors

The detector delivers well-scaled DC voltages proportional to power of the waves propagating in forward and reverse directions in the main waveguide.

The use of tunnel diodes provides the bidirectional detector with improved temperature stability and fast pulse response.

The standard options for maximum working power are 1 kW, 10 kW and 30 kW.

Transfer Curve (f = 2450 MHz, RLOAD = 33 kΩ, TA = 25°C)