Title :
Enhanced efficiency of envelope-tracking based broadband inverse Class-E power amplifier
Author :
Thian, Mury ; Gardner, Peter
Author_Institution :
Dept. Electron., Electr. & Comput. Eng., Univ. of Birmingham, Birmingham
Abstract :
In this paper, the envelope-tracking technique is exploited to boost average efficiency of the newly introduced broadband Inverse Class-E power amplifier. A 2.26 GHz - 20.5 dBm - 3 V power amplifier was designed, constructed, and measured. For a multi-carrier input signal with 10 dB peak-to-average ratio, the average PAE was increased from 5.7% to 54.5%.
Keywords :
power amplifiers; wideband amplifiers; broadband inverse class-E power amplifier; envelope-tracking technique; frequency 2.26 GHz; multicarrier input signal; pulse width modulation; voltage 3 V; Broadband amplifiers; Computational modeling; Computer languages; DICOM; Hardware design languages; Mathematical model; Microwave FETs; Microwave devices; Power amplifiers; Standards development; Average efficiency; Class-E; broadband; envelope tracking; power amplifier; pulse-width modulation;
Conference_Titel :
Integrated Nonlinear Microwave and Millimetre-Wave Circuits, 2008. INMMIC 2008. Workshop on
Conference_Location :
Malaga
Print_ISBN :
978-1-4244-2645-4
Electronic_ISBN :
978-1-4244-2646-1
DOI :
10.1109/INMMIC.2008.4745742
