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A DSP structure authorizing reduced-bandwidth DC/DC Converters for Dynamic Supply of RF Power Amplifiers in Wideband Applications

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4 Author(s)
Cesari, A. ; Groupe Integration de Syst. de Gestion de l''Energie, Toulouse ; Cid-Pastor, A. ; Alonso, C. ; Dilhac, J.-M.

A most promising technique for the design of energy efficient radio frequency (RF) transmitters is based on modulating the supply of the main power amplifier (PA) by a DC/DC converter. However, the slow time-response of DC/DC converters compared to the large bandwidth of the RF signal to transmit is an obstacle for application to broadband communications. In this paper, a digital signal processing structure enabling the use of bandwidth-limited DC/DC converters, and resulting in linear, efficiency-enhanced transmitter behaviour is presented. Models of the PA and DC/DC converters are used to validate the principle through simulation procedures

Published in:

IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on

Date of Conference:

6-10 Nov. 2006