Title :
Power Amplifier Predistortion Linearization using a CMOS polynomial generator
Author :
Kidwai, Adil A. ; Jalali, Bahram
Author_Institution :
Univ. of California, Los Angeles
Abstract :
We report an analog predistortion chip developed in 0.18 mu CMOS technology. Linearity improvement of 6-7 dB for power amplifiers has been demonstrated over 60 MHz bandwidth. The chip was also applied for the linearization of externally modulated fiber-optic links where SFDR improvement of 8 dB was achieved for a bandwidth of 40 MHz.
Keywords :
CMOS analogue integrated circuits; VHF amplifiers; intermodulation distortion; optical fibre communication; CMOS polynomial generator; SFDR; bandwidth 40 MHz; externally modulated fiber-optic links; intermodulation distortion; power amplifier; predistortion linearization; size 0.18 mum; Nonlinear distortion; Optical amplifiers; Optical fiber communication; Optical transmitters; Polynomials; Power amplifiers; Power generation; Predistortion; Radio frequency; Radiofrequency amplifiers; DSP; Intermodulation distortion; Nonlinear distortion; third-order intercept point;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0530-0
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2007.380877
