A 26.5-40GHz SiGe Stacked Cascode Power Amplifier

This paper presents a wideband power amplifier in 0.13-μm SiGe BiCMOS technology for 26.5-40GHz Ka-band application. A 6 order input matching network and stacked cascode structure with interstage neutral inductor are used for bandwidth expansion. The simulation results show the gain is larger than 16.1dB, return loss is less than -10dB and P1dB output powers is larger than 19.8dBm in the whole Ka band. The area of the power amplifier is 1.2×1.05 mm
²
, with a total current consumption of 178 mA from a 6 V supply voltage.