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Detailed state-space modeling and analysis of a class of RF switched-capacitor power amplifiers achieving high efficiency, output power, and linearity are presented. Time-domain voltage and current waveforms are analytically obtained via the steady-state solution of the amplifier’s model equations. The output power of the fundamental and that of the harmonics, as well as the drain efficiency of the switched-capacitor power amplifier (SCPA) are derived. The state-space model is implemented in MATLAB and all theoretical results are compared to Cadence Spectre simulation of the SCPA and are found to be in good agreement. [ABSTRACT FROM AUTHOR]

An optimization methodology for a popular class of differential RF switched-capacitor power amplifiers exhibiting high efficiency, output power and linearity is presented. Analytical maximization of the output power with respect to component values provides explicit formulas and design guidelines for the amplifier's core and the tuning of the matching network, that can be used as a starting point for the design and trimming of the power amplifier circuit in an IC design environment. [ABSTRACT FROM AUTHOR]