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Yasushi SHIZUKI Ken ONODERA Fumio SASAKI Kazuhiro ARAI Hiroyuki YOSHINAGA Juichi OZAKI
A compact MMIC power amplifier which delivers P1dB of 25.8 dBm (380 mW) at 40 GHz has been developed. To make the chip width narrower, only one unit block using two parallel HEMTs is applied for a power stage. For achieving broadband interstage matching when using wide gate-width unit devices in the power stage, a new configuration of a unit block which contains a shunt capacitance is proposed.