A compact, 40 GHz 0.5 W power amplifier MMIC

A compact (3.48 mm/sup 2/)0.5 W, 40 GHz power amplifier MMIC has been developed utilizing 0.25 /spl mu/m pHEMT technology. At a 6 V drain bias condition, the 2-stage power amplifier achieves 15.6 dB of small signal gain, 26.5 dBm output power at 1 dB gain compression, 27.9 dBm saturated output power and a maximum power added efficiency of 26.6%.