A high linearity Chireix outphasing power amplifier using composite right/left-handed transmission lines

Author

Eun, Sang-Ki ; Ji, Seung Hun ; Cho, Choon Sik ; Lee, Jae W. ; Kim, Jaeheung

Author_Institution

Korea Aerosp. Univ., Goyang

fYear

2007

fDate

9-12 Oct. 2007

Firstpage

1622

Lastpage

1625

Abstract

A high linearity Chireix outphasing power amplifier using composite right/left-handed transmission lines (CRLH- TL) is proposed at 2.4 GHz. The 180deg hybrid power combiner including CRLH-TL is designed to suppress the second and third harmonics. The output matching circuit is optimized for suppressing the second and third harmonics. The output power at the fundamental frequency shows 32.1 dBm, whereas the second harmonic shows -19.5 dBm and the 3rd harmonic -22.3 dBm as simulation results with 20 dBm input power excited. The class- E amplifiers are utilized for maintaining high efficiency for this work.

Keywords

UHF power amplifiers; harmonics suppression; transmission lines; Chireix outphasing power amplifier; composite right/left-handed transmission lines; frequency 2.4 GHz; harmonic suppression; hybrid power combiner; matching circuit; Distributed parameter circuits; Frequency; High power amplifiers; Impedance matching; Linearity; Power amplifiers; Power combiners; Power generation; Power system harmonics; Power transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. European

Conference_Location

Munich

Print_ISBN

978-2-87487-001-9

Type

conf

DOI

10.1109/EUMC.2007.4405521

Filename

4405521