DocumentCode
3356247
Title
A CMOS dB-linear VGA with pre-distortion compensation for wireless communication applications
Author
Zheng, Yuanjin ; Yan, Jiangnan ; Xu, Yong Ping
Author_Institution
ICS Lab., Inst. of Microelectron., Singapore, Singapore
Volume
1
fYear
2004
fDate
23-26 May 2004
Abstract
This paper describes a CMOS dB-linear variable gain amplifier (VGA) that can provide a variable gain of 60dB while maintaining its 3dB bandwidth greater than 10 MHz. An exponential circuit is proposed to obtain the dB-linear control characteristics. The non-ideal effects on dB linearity are analyzed and the corresponding compensation methods are suggested. Simulation results based on a 0.35μm CMOS technology are presented to demonstrate the performance of the proposed dB-linear VGA.
Keywords
CMOS analogue integrated circuits; differential amplifiers; mobile communication; wideband amplifiers; 0.35 micron; 60 dB; CMOS technology; CMOS variable gain amplifier; dB-linear control characteristics; dB-linear variable gain amplifier; exponential circuit; predistortion compensation; wireless communication; Application software; Approximation error; Bandwidth; CMOS technology; Circuits; Dynamic range; Gain control; Linearity; Voltage; Wireless communication;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN
0-7803-8251-X
Type
conf
DOI
10.1109/ISCAS.2004.1328319
Filename
1328319
Link To Document