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Envelope tracking technique applied on a 10W 2nd harmonic tuned power amplifier at 2.14 GHz

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5 Author(s)
Elisa Cipriani ; Electronic Engineering Department, University of Roma Tor Vergata Via del Politecnico 1, 00133 Roma Italy ; Paolo Colantonio ; Franco Giannini ; Rocco Giofre
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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.

Published in:

Microwave Conference, 2009. EuMC 2009. European

Date of Conference:

Sept. 29 2009-Oct. 1 2009