资料介绍
Analysis
Analysis, measurement and cancellation of the bandwidth and amplitude
dependence of intermodulation distortion in RF power amplifiers
Joel Vuolevi
Department of Electrical Engineering, University of Oulu, P.O. Box 4500,
FIN-90014 University of Oulu, Finland
Abstract
The main emphasis in modern RF power amplifier (PA) research is on
improving linearity while at the same time maintaining reasonably good
efficiency, for which purpose external linearization in the form of
feedforward or predistortion is often used. Linearity and linearization can
be considered from both a fundamental signal (amplitude and phase
conversions, AM-AM & AM-PM) and an intermodulation distortion (IMD)
regeneration point of view, and since a s
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