In this paper,a Ku-band four-channel T/R module is designed based on GaN power amplifier chips.The T/R module features high efficiency,high integration level,small size,light weight,and high modularity.The design of the T/R module is described from various aspects,including framework design of the RF link,specifica-tion calculation of the transmit-receive channel,and RF interconnection simulation.The test results show that the T/R module has outstanding performance within 2 GHz operating bandwidth,with a transmitting power greater than 40dBm and an efficiency greater than 28％.In addition,its receiving gain is greater than 29.5dB and the noise co-efficient is less than 3.6.
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