Title :
The novel programmable RF predistortion linearizer
Author :
Jia Sun ; Chia, M.Y.W.
Author_Institution :
Centre for Wireless Commun., Singapore
Abstract :
A novel programmable RF predistortion linearizer is developed in this paper. The key concept of this novel circuit is the distortion compensation performance can be easily optimized at different input power and different operation frequency by controlling the BJT bias V/sub b/ and varactor voltage V/sub vac/. There is a 9 dBc improvement in IM/sub 3/ and a 6 dBc improvement in ACPR in the prototype for the novel programmable RF predistortion linearizer for IS-95 application.
Keywords :
compensation; linearisation techniques; nonlinear distortion; power amplifiers; programmable circuits; radiofrequency amplifiers; ACPR improvement; BJT bias control; IM/sub 3/ improvement; IS-95 application; RF power amplifiers; distortion compensation performance optimization; programmable RF predistortion linearizer; transistor bias; varactor voltage control; Circuits; Communication system control; Diodes; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Varactors; Voltage control; Wireless communication;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967015
