Class-F power amplifier using a multi-frequency composite right/left-handed transmission line harmonic tuner

Author

Dupuy, Alexandre ; Leong, Kevin M K H ; Itoh, Tatsuo

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

fYear

2005

fDate

12-17 June 2005

Abstract

A class-F power amplifier at 2.4GHz using a novel harmonic tuner based on a composite right/left handed (CRLH) transmission line (TL) is proposed and experimentally tested. Two structures are presented. One structure uses one open CRLH-TL stub to suppress 2nd, 3rd harmonics and the fundamental frequency is matched to 50Ω. The other structure uses two open CRLH-TL stubs in order to suppress 2nd, 3rd, 4th harmonics and the fundamental frequency is matched to specific impedance. The structure proposed is used to design a class-F power amplifier. A maximum drain efficiency of 64% is obtained.

Keywords

UHF power amplifiers; circuit tuning; harmonics suppression; metamaterials; transmission line theory; 2.4 GHz; 50 ohm; class-F power amplifier; composite right-left-handed transmission lines; harmonic tuner; harmonics suppression; left handed structures; metamaterials; right handed structures; Circuits; Frequency; High power amplifiers; Impedance; Metamaterials; Power amplifiers; Power system harmonics; Power transmission lines; Radiofrequency amplifiers; Tuners;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2005 IEEE MTT-S International

ISSN

01490-645X

Print_ISBN

0-7803-8845-3

Type

conf

DOI

10.1109/MWSYM.2005.1517142

Filename

1517142