An exact analysis of Class-E power amplifiers for RF communications

Author

Klehn, Brett E. ; Islam, Syed S.

Author_Institution

Dept. of Electr. Eng., Rochester Inst. of Technol., NY, USA

Volume

4

fYear

2004

fDate

23-26 May 2004

Abstract

An exact analytical approach to the design of a Class-E high frequency power amplifier is presented. The analysis will optimize the load network parameters at the output of the switching transistor, while accounting for harmonics injected into the circuit from the choke inductor, finite quality factor of the output load network, and an exponential decay of the drain/collector current during OFF state. Calculated power performances in terms of efficiency and Total Harmonic Distortion (THD) as a function of decay angle and finite choke inductance are presented.

Keywords

Q-factor; harmonic distortion; inductors; power amplifiers; radiocommunication; RF communications; choke inductor; class-E high frequency power amplifier; decay angle; drain-collector current; exponential decay; finite choke inductance; harmonics injector; load network parameters; quality factor; radiofrequency communications; switching transistor; total harmonic distortion; Communication switching; Harmonic analysis; High power amplifiers; Inductors; Power amplifiers; Q factor; Radio frequency; Radiofrequency amplifiers; Switching circuits; Total harmonic distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on

Print_ISBN

0-7803-8251-X

Type

conf

DOI

10.1109/ISCAS.2004.1328994

Filename

1328994