Title :
Power Consumption Model for Linear RF Power Amplifiers with Rectangular M-QAM Modulation
Author :
Talonen, Mikko ; Lindfors, Saska
Author_Institution :
Electronic Circuit Design Laboratory, Helsinki University of Technology, Electronic Circuit Design Laboratory P.O.Box 3000 FIN-02015 HUT Finland, mtalonen@cc.hut.fi
Abstract :
Signal and transmit power dependent power consumption models for linear, class-A and class-B RF power amplifiers are derived. The power consumption of a class-B amplifier displays a square root dependency with respect to transmit power. The effect of signal statistics is studied for root- raised cosine filtered and M-QAM modulated signals. While the order of the modulation and filter roll-off have a strong effect on the maximum transmit power they are found to have only marginal impact on the power consumption below the maximum.
Keywords :
power amplifiers; power consumption; quadrature amplitude modulation; radiofrequency amplifiers; class-A RF power amplifiers; class-B RF power amplifiers; filter roll-off; linear RF power amplifiers; maximum transmit power; power consumption model; rectangular M-QAM modulation; root- raised cosine filtered; signal power; signal statistics; Electronic circuits; Energy consumption; Impedance matching; Laboratories; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Signal design; Statistics; Voltage;
Conference_Titel :
Wireless Communication Systems, 2007. ISWCS 2007. 4th International Symposium on
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-0979-2
Electronic_ISBN :
978-1-4244-0979-2
DOI :
10.1109/ISWCS.2007.4392427
