Title :
Design of dual-band multi-way Doherty power amplifiers
Author :
Li, Xiang ; Chen, Wenhua ; Lu, Zisheng ; Feng, Zhenghe ; Chen, Yaqin ; Ghannouchi, Fadhel M.
Author_Institution :
State Key Laboratory on Microwave and Digital Communications, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Abstract :
A design technique for dual-band multi-way Doherty power amplifier (PA) using dual-band networks is proposed in this paper. A T-network and a two-section line network are used to implement dual-band impedance transformer. Experimentally, the proposed PA achieves a power added efficiency (PAE) of 33% with 7dB back-off and 29% with 8 dB back-off from the saturated output power at 0.92 GHz and 1.99 GHz. Compared to other dual-band Doherty PAs, the back-off range of the proposed Doherty PA is much wider.
Keywords :
Dual band; Microwave amplifiers; Standards; Doherty PA; Dual-band; Multi-way; dual-band transformer; high efficiency;
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2012.6259366
