Design of 100-W Class GaN Power Amplifier for On-board SSPA of Ku-band Broadcasting Satellites

摘要

An increase in the transmission capacity of broadcasting satellites is expected towards 4K and 8K UHDTV service using satellites. The tranmission systems for UHDTV satellite broadcasting are developed that include a modulation scheme of amplitude and phase shift keying (APSK). At the same time, the satellite transmission performance should be improved, including the non-linear characteristics of the on-board equipment for the stable implementation of this type of transmission system. We have designed a 100-W class GaN power amplifier and estimated its electrical performance in order to develop an on-board solid state power amplifier (SSPA) for use in 12 GHz-band broadcasting satellites.