The infeasibility of a zero-current switching class-E amplifier

Author

Herman, Kelly J. ; Zulinski, Robert E.

Author_Institution

Dept. of Electr. Eng., Michigan Technol. Univ., Houghton, MI, USA

Volume

37

Issue

1

fYear

1990

fDate

1/1/1990 12:00:00 AM

Firstpage

152

Lastpage

154

Abstract

It has been shown that a class-E amplifier can be configured to provide nearly 100% efficiency and zero-current or zero-voltage switching. A particular configuration, which supplies zero-current switching when the transistor output capacitance is zero, is considered for the case in which the transistor output capacitance is greater than zero. Equations for the switch voltage and current, the DC input voltage and current, the output voltage and current, and powers are determined for the amplifier. The equations show that with this configuration, a zero-current-switching class-E amplifier cannot be physically realized

Keywords

equivalent circuits; network analysis; network topology; power amplifiers; switching circuits; DC input current; DC input voltage; circuit analysis; class-E amplifier; output current; output power; output voltage; switch current; switch voltage; switching mode power amplifier; transistor output capacitance; zero-current switching; Circuits and systems; Digital filters; Finite impulse response filter; Hardware; IIR filters; Power amplifiers; Signal processing; Switches; Voltage; Zero current switching;

fLanguage

English

Journal_Title

Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0098-4094

Type

jour

DOI

10.1109/31.45707

Filename

45707