BD214 is a bidirectional detector intended for simultaneous sampling of incident and reflected waves in high-power 900 MHz industrial applications using an WR975 (R9) rectangular waveguide. The bidirectional detector combines the following components:

• 4-port directional coupler
• Attenuators
• Zero-bias Schottky diode detectors

The detector delivers two well-scaled DC voltages proportional to power of the waves propagating in forward and reverse directions in the parent waveguide. Standard maximum working powers P_max are 10 kW and 100 kW.

Transfer Curve (f = 915 MHz, R_LOAD = 33 kΩ, T_A = 25°C)