Title :
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
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;
Conference_Titel :
Microwave Conference, 2007. European
Conference_Location :
Munich
Print_ISBN :
978-2-87487-001-9
DOI :
10.1109/EUMC.2007.4405521
