AnalysisAnalysis, measurement and cancellation of the bandwidth and amplitudedependence 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, FinlandAbstractThe main emphasis in modern RF power amplifier (PA) research is onimproving linearity while at the same time maintaining reasonably goodefficiency, for which purpose external linearization in the form offeedforward or predistortion is often used. Linearity and linearization canbe considered from both a fundamental signal (amplitude and phaseconversions, AM-AM & AM-PM) and an intermodulation distortion (IMD)regeneration point of view, and since a s……
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