Student design - Efficiency Comparison Between Highly Efficient Class-F and Inverse Class-F Power Amplifiers

Author

Woo, Young Yun ; Yang, Youngoo ; Kim, Ildu ; Kim, Bumman

Author_Institution

Pohang Univ. of Sci. & Technol.

Volume

8

Issue

3

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

100

Lastpage

110

Abstract

The purpose of this note is to provide a clear quantitative explanation of the better efficiency and a design guide for optimizing the output power or efficiency of inverse class-F amplifiers (Woo, et. al., 2006). For this purpose, the efficiency equations of the inverse class-F and conventional class-F amplifiers are derived using ideal time-domain waveforms. Then, analytic comparisons are carried out using these equations under the condition that the fundamental output power of both amplifiers are identical, near where maximum power added efficiency (PAE) is produced. The analysis results clearly show why the inverse class-F amplifier has higher efficiency than the class-F amplifier. We have designed and implemented several inverse class-F amplifiers at 1 GHz to confirm these results

Keywords

power amplifiers; time-varying networks; 1 GHz; conventional class-F; efficiency equations; inverse class-F; power added efficiency; power amplifiers; time domain waveforms; Circuits; High power amplifiers; Microwave amplifiers; Power amplifiers; Power generation; Power system harmonics; Radio frequency; Radiofrequency amplifiers; Time domain analysis; Voltage;

fLanguage

English

Journal_Title

Microwave Magazine, IEEE

Publisher

ieee

ISSN

1527-3342

Type

jour

DOI

10.1109/MMW.2007.365070

Filename

4213233