Title :
A low power variable gain amplifier with 50-dB dynamic range
Author :
Pilong Gao ; Zhigong Wang ; Jian Xu ; Weibing Li ; Yiqiang Wu ; Lu Tang
Author_Institution :
Inst. of RF- & OE-ICs, Southeast Univ., Nanjing, China
Abstract :
This paper presents a new structure of variable gain amplifier (VGA) in which a modified Gilbert Cell is firstly proposed to implement a low power wide dynamic range VGA. The proposed VGA can provide 50-dB dynamic range within a linear error of 1-dB. Furthermore, the proposed circuit consumes less than 0.5-mA current and occupies about only 0.12-mm2 chip area, both of which are relatively low in terms of the wide dynamic range provided by it.
Keywords :
amplifiers; low-power electronics; low power variable gain amplifier; low power wide dynamic range VGA; modified Gilbert cell; CMOS integrated circuits; Dynamic range; Gain; Generators; MOSFETs; Simulation; Voltage control; linear-in-dB; low power; wide dynamic range;
Conference_Titel :
Microwave Workshop Series on Millimeter Wave Wireless Technology and Applications (IMWS), 2012 IEEE MTT-S International
Conference_Location :
Nanjing
Print_ISBN :
978-1-4673-0901-1
Electronic_ISBN :
978-1-4673-0903-5
DOI :
10.1109/IMWS2.2012.6338193
