A Calculation Method of Large-Signal Characteristics of Multi-Stage Power Amplifier Modules Using Source-Pull and Load-Pull Data

Kazutomi MORI  Yasushi ITOH  Katsuya KOMURO  Tadashi TAKAGI  

IEICE TRANSACTIONS on Electronics   Vol.E81-C    No.6    pp.904-910
Publication Date: 1998/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Semiconductor Devices and Amplifiers
microwave,  solid state power amplifier,  multi-stage power amplifier,  calculation method,  

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This paper describes a calculation method of large-signal characteristics of multi-stage power amplifier modules using source-pull and load-pull data. An output power, a power-added efficiency, and a phase deviation of multi-stage power amplifier modules are calculated based on the source-pull and load-pull data, which are comprised of input and output reflection coefficients, an input power, an output power, a phase deviation and a drain voltage and current, taking into account the source and load impedance of each stage FET. Applying this method to a 900 MHz two-stage Si-MOSFET power amplifier module, the calculated and measured results are in good agreement.