A 20-50 GHz MMIC amplifier with 21 dBm output power and its application as a frequency doubler

A 20-50-GHz MMIC amplifier, designed on a 0.25- mu m-gate PMODFET production IC process that exhibits a 13+or-1.8 dB gain with greater than 21-dBm saturated output power across the band is discussed. A traveling-wave-input power-combined-output configuration developed for the input stage design facilitates area-efficient broadband impedance matching and also permits the amplifier to operate as a frequency doubler. More than 10-dBm output power is achieved over the 20-50-GHz doubled frequency band for 20-dBm input power.<
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