The class-E/F family of ZVS switching amplifiers

Author

Kee, Scott D. ; Aoki, Ichiro ; Hajimiri, Ali ; Rutledge, David

Author_Institution

Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA

Volume

51

Issue

6

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

1677

Lastpage

1690

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.

Keywords

capacitance; circuit tuning; nonlinear network analysis; power amplifiers; radiofrequency amplifiers; switching circuits; ZVS switching amplifiers; class-E features; class-E/F family; harmonic tuning; inverse class-F features; transistor parasitic capacitance; zero voltage switching operation; Frequency; High power amplifiers; Operational amplifiers; Parasitic capacitance; Power system harmonics; Radiofrequency amplifiers; Switches; Switching circuits; Time domain analysis; Zero voltage switching;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2003.812564

Filename

1201800