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60 GHz and 80 GHz-band power amplifier (PA) MMICs have been developed on a standard 90nm CMOS technology for use in RF front-ends of wide-band, low-cost communication and/or radar systems. A 60 GHz three-stage PA and a 80 GHz five-stage PA, both with single-ended architecture, have demonstrated saturated output powers of 12.6 dBm and 10.3 dBm with linear gains of 10.0 dB and 12.2 dB, respectively,...