Title :
A class E power amplifier design for drain modulation under a high PAPR WiMAX signal
Author :
Cabria, L. ; Cabral, P.M. ; Pedro, J.C. ; García, J.A.
Author_Institution :
Dept. Ing. de Comun., Univ. de Cantabria, Santander, Spain
Abstract :
This paper describes the design of a class E power amplifier (PA) destined to be used as the final stage of a polar transmitter under IEEE 802.16e Mobile WiMAX signal excitation. Based on a 60 W GaN HEMT device, the load condition for optimum efficiency is set close to the maximum value of the power generating function, as defined in, for an OFDMA modulating signal. The possible impact of such average-based design on the AM profile is also put into consideration.
Keywords :
WiMax; high electron mobility transistors; power amplifiers; HEMT device; IEEE 802.16e mobile WiMAX signal excitation; OFDMA modulating signal; average based design; class E power amplifier design; drain modulation; high electron mobility transistors; load condition; optimum efficiency; polar transmitter; power generating function; Gallium nitride; HEMTs; High power amplifiers; Peak to average power ratio; Power amplifiers; Power generation; Signal design; Signal generators; Transmitters; WiMAX; EER; GaN HEMT; efficiency; linearity; polar transmitter; power amplifier;
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.2010.5440968
