A microwave limiter with non‐reciprocal limiting threshold.

A novel microwave limiter with non‐reciprocal limiting threshold is proposed in this paper to protect the transceiver switch or the transmitter. The directivity of the directional coupler is utilized to make the power of the received signal input to the detection circuit larger than that of the transmitted signal, thereby the detection circuit provides different DC bias voltages to the limiter circuit and changes the threshold level of the limiter diode. The test results show that this limiter has a threshold level of 35 dBm for the transmitted signal and 17 dBm for the received signal, which has a non‐reciprocal limiting threshold for high‐power signals input in both directions. [ABSTRACT FROM AUTHOR]