Title :
A new envelope tracking technique for concurrent duan-band PAs
Author :
Li, Jiannan ; Chen, Wenhua
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada
Abstract :
In this paper, a new envelope tracking (ET) technique is proposed for concurrent dual-band power amplifiers (PAs). By combining the envelopes of two input signals of PAs at different frequency bands with proper weights, the ET technique realizes an enhancement in the total efficiency. The bandwidth of the synthesized envelope is analyzed. The result shows that the proposed ET technique does not increase the band width of the signal, which will alleviate the bandwidth burden of the envelope amplifier.
Keywords :
UHF power amplifiers; ET technique; concurrent dual-band power amplifier; concurrent duan-band PA; envelope tracking technique; Application software; Dual band; Microwave amplifiers; Multiaccess communication; Power amplifiers; Power supplies; Dual band; energy efficiency; envelope tracking; nonlinear distortion; power amplifiers;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4577-1414-6
DOI :
10.1109/CECNet.2012.6201694
