DocumentCode :
2867565
Title :
Novel dual-band matching network topology and its application for the design of dual-band Class J power amplifiers
Author :
Fu, Xin ; Bespalko, Dylan T. ; Boumaiza, Slim
Author_Institution :
Emerging Radio Systems Group, University of Waterloo, Ontario, N2L 3G1, Canada
fYear :
2012
fDate :
17-22 June 2012
Firstpage :
1
Lastpage :
3
Abstract :
In this paper, a systematic design of a dual-band power amplifier (PA) is presented. Using the inherent impedance matching flexibility of a Class J operating mode, we can start by relaxing the performance sensitivity and design requirements of the matching networks. Then, a novel dual-band matching network topology is devised to simultaneously present adequate source and load impedances at the fundamental and harmonic components of both targeted operating frequencies. The dual-band matching network is designed in two stages. First, a complex-to-real impedance transformation network, with harmonic control capability, is used to transform the complex impedance for class J operation to real impedance that is common to both operation frequencies. Then, a real-to-real trans-impedance transformer is synthesized using dual-band filter theory. This technique was successfully applied to design a dual-band 45W GaN Class J PA operating at 0.8GHz and 1.9GHz. The measurement results of the fabricated PA shows peak efficiencies of 74.4% at the lower band and 57.6% at the upper band.
Keywords :
Dual band; Filtering theory; Harmonic analysis; Impedance; Manganese; Power amplifiers; Power harmonic filters; Class J; dual-band filters; dual-band power amplifiers; high efficiency; impedance matching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
ISSN :
0149-645X
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
Type :
conf
DOI :
10.1109/MWSYM.2012.6259644
Filename :
6259644
Link To Document :
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