R.E. Zulinski

TL;DR: In this paper, it was shown that class E operation may be maintained with the RF choke replaced by a smaller reactance, which is similar to that used by Raab in his description of class E amplifiers in that the equations describing circuit operation are obtained from Fourier series methods and the assumption of an infinite output network Q.

TL;DR: In this paper, the authors presented an analysis for a class-E power inverter that exhibits any of the following characteristics: (1) load-independent, nonzero output voltage, but not load independent efficiency; (2) load independent non-zero efficiency, not load output voltage; (3) simultaneous load independent, non zero output voltage and loadindependent nonzero efficiency.

TL;DR: In this paper, a new analysis of idealized class E frequency multipliers similar to that used by Raab in his description of class E amplifiers, in that the equations describing multiplier operation are obtained from Fourier series methods and the assumption of an infinite output network Q, are used to determine 1) optimum operation (maximum power output capability at 100-percent efficiency) at any harmonic, and 2) design equations that yield the requisite component values for optimum operation.

TL;DR: In this paper, a Laplace transform was applied to class E amplifiers with neither of these restrictions, and the analysis was shown to have excellent agreement with observed circuit performance, which is shown to be consistent with observed performance.

TL;DR: In this article, a simple and efficient procedure relying on a state-space description of the circuit to evaluate boundary conditions in a class-E, switching-mode, RF amplifier is described.