DocumentCode :
2867171
Title :
Efficiency and linearity of power amplifiers with external harmonic injection
Author :
Dani, Asmita ; Roberg, Michael ; Popovic, Zoya
Author_Institution :
Department of Electrical, Computer and Energy Engineering, University of Colorado at Boulder, 80309-0425, USA
fYear :
2012
fDate :
17-22 June 2012
Firstpage :
1
Lastpage :
3
Abstract :
This paper discusses a method for improving the efficiency of linear power amplifiers by externally injecting power into the output at the second harmonic frequency. An experimental proof-of-concept PA based on class-A/AB mode with a 10-W GaN pHEMT at 2.45GHz is presented, and its efficiency improved from 58% to 75% with −6.5 dBc injected 2nd harmonic power. Two-tone measurements confirm improved linearity with simultaneous increase in efficiency, accompanied by gain compression at higher input power.
Keywords :
Harmonic analysis; Linearity; Microwave amplifiers; Power amplifiers; Power generation; Power measurement; Power system harmonics; GaN pHEMT; high-efficiency; nonlinear analysis; power amplifier;
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.2012.6259620
Filename :
6259620
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2867171
بازگشت