Title :
A 6 Watt linear RF power amplifier for WiMAX base station
Author :
Bruno, Marcelo J. ; Citta, Lucas ; Cousseau, Juan E.
Author_Institution :
Dept. de Ing., Univ. Nac. del Sur, Bahia Blanca
Abstract :
This paper presents a two-stage design of a 6 watt RF linear power amplifier following WiMAX radio interface specification. The main design goal chosen is linearity instead of efficiency. By this reason the design must be complemented with a predistortion scheme. The main source of nonlinear impairment, i.e., 3rd-order intermodulation distortion product obtained is below -32 dBc, with a minimum ripple of 0.5 dB over a 150 MHz of bandwidth centered at 2.4 GHz. Due to the specified bandwidth, the DC decoupling filters and input-output matching networks are implemented mainly with microstrip components in both stages. A total gain of 27 dB was measured, which makes this amplifier able to be interconnected directly to low power baseband signal processors.
Keywords :
UHF power amplifiers; WiMax; intermodulation distortion; radio access networks; 3rd-order intermodulation distortion product; DC decoupling filters; WiMAX base station; bandwidth 150 MHz; frequency 2.4 GHz; gain 27 dB; input-output matching networks; linear RF power amplifier; microstrip components; power 6 W; predistortion scheme; Bandwidth; Base stations; Intermodulation distortion; Linearity; Matched filters; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; WiMAX;
Conference_Titel :
Micro-Nanoelectronics, Technology and Applications, 2008. EAMTA 2008. Argentine School of
Conference_Location :
Buenos Aires
Print_ISBN :
978-987-655-003-1
Electronic_ISBN :
978-987-655-003-1
