This guide to the theory and practice of RF power amplifier (PA)
design for modern communications systems aims to help readers
tackle PA design with confidence and save time in determining the
cause of malfunctioning hardware. The book explores a unified
approach to the classification of higher amplifier modes based on
overdrive considerations. The text contains a complete survey of RF
PA efficiency enhancement and linearization techniques and aims to
help the reader design suitable matching networks which provide
correct fundamental harmonic terminations for conventional high
efficiency PA modes. It also provides an understanding of the class
D, E and F modes and their feasibility at microwave frequencies and
uses envelope simulation techniques to analyze the effects of
distortion in overdriven PAS. Finally, the text discusses the
maintenance of high efficiency operation at low points in an
amplitude modulated signal envelope including detailed coverage of
the Doherty, Chireix and Kahn techniques, it explores the
possibilities and limitations of linearization methods and analyzes
PA stability and oscillation problems.
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