The class-E/F family of ZVS switching amplifiers
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In this article, a new family of switching amplifiers, each member having some of the features of both class E and inverse F, is introduced, which have class-E features such as incorporation of the transistor parasitic capacitance into the circuit.Abstract:
A new family of switching amplifiers, each member having some of the features of both class E and inverse F, is introduced. These class-E/F amplifiers have class-E features such as incorporation of the transistor parasitic capacitance into the circuit, exact truly switching time-domain solutions, and allowance for zero-voltage-switching operation. Additionally, some number of harmonics may be tuned in the fashion of inverse class F in order to achieve more desirable voltage and current waveforms for improved performance. Operational waveforms for several implementations are presented, and efficiency estimates are compared to class-E.read more
Citations
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References
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Journal ArticleDOI
Class E-A new class of high-efficiency tuned single-ended switching power amplifiers
Nathan O. Sokal,Alan D. Sokal +1 more
TL;DR: In this article, a load network is synthesized to have a transient response which maximizes power efficiency even if the active device switching times are substantial fractions of the a.c. cycle.
Class-e - new class of high-efficiency tuned single-ended switching power amplifiers
TL;DR: Advantages of Class E are unusually high efficiency, a priori designability, large reduction in second-breakdown stress, low sensitivity to active-device characteristics, and potential for high-efficiency operation at higher frequencies than previously published Class-D circuits.
Journal ArticleDOI
Idealized operation of the class E tuned power amplifier
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.
Book
Resonant Power Converters
TL;DR: In this article, the authors present the following classes of converters: 1) Current-Driven Rectifiers, 2) Voltage driven rectifiers, 3) Parallel Resonant Inverters, 4) Series Resonant Converters, and 5) Controlled Resonant Induction Converters.
Journal ArticleDOI
Class-F power amplifiers with maximally flat waveforms
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.
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