Title :
A 84-db wideband low-power variable gain amplifier
Author :
Belousov, Egor ; Lomovskaya, Ksenia
Author_Institution :
TCS Dept., Nat. Res. Univ. of Electron. Technol. (MIET), Zelenograd, Russia
Abstract :
A wideband CMOS variable gain amplifier (VGA) with a wide gain tuning range for automatic gain control (AGC) in wireless communication systems is presented in this article. The VGA shows a maximum gain variation of 84 dB, its -3 dB bandwidth is 600 MHz at a maximum gain of 40 dB and 1.6 GHz at a minimum gain of -44 dB. The VGA gain is adjusted by applying external control voltage at the range of 350 mV to 1.6 V and is varied within 84 dB. The design´s parameters were calculated and simulated for 180-nm CMOS technology. The VGA drains 4.5 mA from 1.8 V supply thus dissipating 8.1 mW.
Keywords :
CMOS integrated circuits; UHF amplifiers; UHF integrated circuits; automatic gain control; low-power electronics; wideband amplifiers; UHF amplifiers; bandwidth 600 MHz; current 4.5 mA; frequency 1.6 GHz; gain -44 dB; gain 40 dB; power 8.1 mW; size 180 nm; voltage 1.8 V; voltage 350 mV to 1.6 V; Bandwidth; CMOS integrated circuits; Gain; Transconductance; Transistors; Tuning; Voltage control;
Conference_Titel :
Signals, Circuits and Systems (ISSCS), 2013 International Symposium on
Conference_Location :
Iasi
Print_ISBN :
978-1-4799-3193-4
DOI :
10.1109/ISSCS.2013.6651221
