Title :
A DSP structure authorizing reduced-bandwidth DC/DC Converters for Dynamic Supply of RF Power Amplifiers in Wideband Applications
Author :
Cesari, Albert ; Pastor, Angel Cid ; Alonso, Corinne ; Dilhac, Jean Marie
Author_Institution :
Groupe Integration de Syst. de Gestion de l´´Energie, Toulouse
Abstract :
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
Keywords :
DC-DC power convertors; digital signal processing chips; power amplifiers; radiofrequency amplifiers; wideband amplifiers; DSP structure; RF power amplifiers; broadband communications; dynamic supply; radiofrequency transmitters; reduced-bandwidth DC-DC converter time-response; wideband applications; Bandwidth; Broadband amplifiers; DC-DC power converters; Digital signal processing; Energy efficiency; Power amplifiers; Power supplies; Radio frequency; Radio transmitters; Radiofrequency amplifiers;
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
Print_ISBN :
1-4244-0390-1
DOI :
10.1109/IECON.2006.347312
