AnUltra Wideband Transmit/Receive ModuleOperating from10to35 GHzforPhased Array Applications

An ultra wideband andmulti-frequency T/R moduleusedinaphasedarraytransceiver system isdescribed. TheT/Rmoduleoperating from10to35GHzhasthree transmit channels at10,19,32GHzandthree receive channels at12,21, 35GHz.TheT/Rmoduleiscomposed oftwomirror-imaged multiplexers, MMIC lownoiseamplifiers andMMIC power amplifiers. Withthemultiplexers, theT/Rmodulecantransmit andreceive multi-frequency signals simultaneously. Fabrication issues including interconnections between components arealso presented. Themodulecanbeusedasabuilding block forafull- duplex multi-frequency phased array transceiver system. IndexTerms - MMIC amplifiers, microstrip bandpass filters, multiplexer, T/Rmodule.