High Power Monolithic pHemt GaAs Limiter for T/R Module

Abstract

In this paper, a high power monolithic GaAs limiter for transmit/receive module is presented. While keeping the output power below 100 mW (20 dBm), this limiter can sustain a RF input power up to 4 Watts (36 dBm). The survival input power of this limiter can get up to 10 Watts (40 dBm). This chip obtains a wide bandwidth from 7 to 21 GHz. Within this band, the chip has the insertion loss lower than 2.3 dB and achieves only 1 dB insertion loss in the X-Band from 7 GHz to 12 GHz.