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

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3 Author(s)
Dupuy, Alexandre ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; Leong, K.M.K.H. ; Itoh, T.

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.

Published in:

Microwave Symposium Digest, 2005 IEEE MTT-S International

Date of Conference:

12-17 June 2005