Title :
Envelope tracking technique applied on a 10W 2nd harmonic tuned power amplifier at 2.14 GHz
Author :
Cipriani, Elisa ; Colantonio, Paolo ; Giannini, Franco ; Giofré, Rocco ; Piazzon, Luca
Author_Institution :
Electron. Eng. Dept., Univ. of Roma Tor Vergata, Rome, Italy
fDate :
Sept. 29 2009-Oct. 1 2009
Abstract :
In this contribution, the simulated and measured results of a 2nd harmonic tuned power amplifier managed with envelope tracking technique are presented. From experimental results, the bias tracking leads to an average efficiency improvement from 30.6% to 43.6% considering 12 dB of input power back-off, with respect to the same power amplifier with fixed bias point. In both cases the same behaviour for output power, which reaches 40.4 dBm, and a constant gain (12.4 dB) has been observed.
Keywords :
UHF power amplifiers; circuit tuning; harmonic generation; envelope tracking technique; frequency 2.14 GHz; power 10 W; power amplifier; second harmonic tuning; Communication systems; Conference management; Microwave amplifiers; Microwave measurements; Microwave theory and techniques; Power amplifiers; Power engineering and energy; Power generation; Power measurement; Power system harmonics;
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
