W band solid‐state power amplifier for aerospace usage

Concentrating on the high frequency aerospace demand of solid-state power amplifier (SSPA), this paper presents methodology and key technique a W-band 3-W SSPA that achieves efficiency while maintaining excellent reliability capability. An improved Magic-T combiner is utilized to achieve output power, eliminate influence parallel end-stage gallium-nitride high-electron-mobility-transistor (GaN HEMT) PAs by its good isolation performance. The SSPA's millimetre-wave circuit implemented three stages amplifier, realized more than 30-dB gain. power-supply based two-transistor forward topology proposed for voltage converting serious sequence controlling. fabricated measured, achieving 33-dBm 34.1-dBm within range 92–96 GHz, with gain 31–32 dB, peak 7.1%, respectively. shows competitive performance space application.