Frederick H. Raab

TL;DR: In this article, a wide variety of techniques, implementations, and active devices are presented to generate RF/microwave power for wireless communications, but also in applications such as jamming, imaging, RF heating, and miniature dc/dc converters.

TL;DR: In this paper, the Fourier series analysis of the collector voltage waveform is used to determine component values for optimum operation at an efficiency of 100 percent, and other combinations of component values and duty cycles are also determined.

TL;DR: In this paper, the basic relationship among the Fourier coefficients of the waveforms and the performance of the amplifier was derived for maximally flat waveforms, and the Amplifier performance was tabulated as a function of which harmonics are included in the voltage and current waveforms.

TL;DR: A Doherty system combines the outputs of two or more linear RF power amplifiers through an impedance-inverting coupler such as a quarter-wave transmission line and can be considerably more efficient than a conventional class-B linear PA.

TL;DR: The outphasing technique (LINC) combines two nonlinear RF power amplifiers into a linear RF power-amplifier (PA) system using saturated class-B PA's and proper selection of the shunt reactance improves efficiency.