A miniature 15-50-GHz medium power amplifier

A miniature power amplifier, which combines two conventional distributed amplifiers and a single transistor amplifier is designed to achieve wide bandwidth, high gain and moderate output power from 15 to 50 GHz. This circuit was fabricated using 0.15-/spl mu/m GaAs based pHEMT MMIC technology. The measured small signal gain is 21/spl plusmn/1.5dB from 15 to 50 GHz, and the output saturated power is 18-22 dBm from 18 to 50 GHz with a miniature size of 1.5 /spl times/ 1 mm/sup 2/.