A 20W Ka-Band Dual-Port Power Amplifier for Communication Satellites

Abstract

this paper presents a ka-band dual-port power amplifier, developed for low-orbit communication satellite. The power amplifier was designed based on 0.15 um gate length GaN MMIC power amplifiers. The RF output port is optional and controlled by external command. The maximum saturated power 25 W with a PAE of 33% has been achieved. The environmental tests for power amplifier have been carried out. The measured result and thermal vacuum test result have been shown in this paper. The power amplifier has been working well on-orbit for two years.