Title :
Linearization performance for a polar work function predistorter
Author :
Rey, Claudio G. ; Clark, Eugene
Author_Institution :
Spectrian Corp., Sunnyvale, CA, USA
Abstract :
We present a polar work function predistorter (WFP) which shows good RF amplifier linearization performance and wideband capability. We describe a DSP optimization scheme that allows the linearizer to adapt and maintain optimum out-of-band performance. We further describe a simulator that accurately models the performance of the system and predicts dynamic distortion due to the WFP implementation as well as an unexpected nonlinear optimum solution for the am-to-am distortion compensation
Keywords :
analogue processing circuits; circuit optimisation; circuit simulation; electric distortion; linearisation techniques; power amplifiers; radiofrequency amplifiers; work function; DSP optimization scheme; RF amplifier linearization performance; WFP implementation; am-to-am distortion compensation; dynamic distortion; linearization performance; nonlinear optimum solution; optimum out-of-band performance; performance; polar work function predistorter; simulator; wideband capability; Circuits; Delay lines; Digital signal processing; Feedback; Nonlinear distortion; Predictive models; Predistortion; Radio frequency; Radiofrequency amplifiers; Signal generators;
Conference_Titel :
Radio and Wireless Conference, 1998. RAWCON 98. 1998 IEEE
Conference_Location :
Colorado Springs, CO
Print_ISBN :
0-7803-4988-1
DOI :
10.1109/RAWCON.1998.709202
