Design of S-Band 90-Watt Solid-State Power Amplifier Module Using an Improved Nonlinear FET Model

Kohei FUJII  Yasuhiko HARA  

IEICE TRANSACTIONS on Electronics   Vol.E82-C   No.7   pp.1047-1053
Publication Date: 1999/07/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Active Devices and Circuits
MMIC,  GaAs FET,  nonlinear model,  power amplifier,  

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The design and performance of a S-band solid-state power amplifier (SSPA) module are reported. The SSPA module consisted from four MMIC power amplifiers (PA) achieves 90 W output power, 35% power added efficiency (PAE), and 80% power combine efficiency. The MMIC PA achieves over 28 W output power, 25 dB small signal gain, and over 38% PAE. This paper also describes the large-signal circuit design for the MMIC PA using an improved nonlinear FET model developed for high power amplifier applications.