Title :
A method for real-time generation of slew-rate limited envelopes in envelope tracking transmitters
Author :
Montoro, G. ; Gilabert, P.L. ; Bertran, E. ; Berenguer, J.
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya, Castelldefels, Spain
Abstract :
This paper shows a method for generating slew-rate limited envelopes in order to accomplish the slew-rate restrictions of the envelope driver in envelope tracking transmitters. The proposed algorithm can run in real-time and it is implemented in a digital front-end of a Software Radio system. Simulation results and conclusions are provided to validate the methodology. Moreover, experimental results of an FPGA implementation are also provided.
Keywords :
field programmable gate arrays; power amplifiers; radio transmitters; software radio; FPGA; digital front-end; envelope tracking transmitters; power amplifiers; slew-rate limited envelopes; software radio system; Bandwidth; Digital signal processors; Field programmable gate arrays; Peak to average power ratio; Power amplifiers; Radio frequency; Radio transmitters; Radiofrequency amplifiers; Signal generators; Signal processing algorithms; Efficient power amplifiers; envelope tracking; slew-rate;
Conference_Titel :
RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS), 2010 IEEE International Microwave Workshop Series on
Conference_Location :
Aveiro
Print_ISBN :
978-1-4244-5751-9
DOI :
10.1109/IMWS.2010.5441005
