A 6-GHz 80-W GaAs FET Amplifier with TM-Mode Cavity Power Combiner

Abstract

A novel 8-way divider/combiner using TM010- and TM020-mode cavities was developed, with an insertion loss of 0.2 dB and a bandwidth of 600 MHz at 6 GHz. An 80-W broadband GaAs FET amplifier with combining efficiency of 85 percent was successfully demonstrated using this power divider/combiner.