DocumentCode
2240298
Title
A CMOS Digitally Controlled RF Variable Gain Amplifier
Author
Weng, Ro-Min ; Chen, Bing-Hung
Author_Institution
Dept. of Electr. Eng., Nat. Dong Hwa Univ., Hualien
fYear
2006
fDate
4-7 Dec. 2006
Firstpage
207
Lastpage
209
Abstract
A new digitally controlled decibel-linear variable gain amplifier (VGA) is presented. The proposed VGA uses a folded cascode opamp and a capacitance-selecting technique to provide dB-linear gain control. The VGA provides a 36.6dB gain control range with a gain error less than 0.2dB while operating at 1GHz. It can also be operated at 2GHz to give a 28dB gain control range with an error less than 0.65dB. The power consumption is 10.77mW at 1.8V supply voltage
Keywords
CMOS integrated circuits; UHF amplifiers; digital control; operational amplifiers; 1 GHz; 1.8 V; 10.77 mW; 2 GHz; 28 dB; 36.6 dB; CMOS technology; RF variable gain amplifier; digital control; folded cascode opamp; linear gain control; Capacitance; Circuits; Digital control; Digital signal processing; Electric variables control; Error correction; Gain control; Radio frequency; Radiofrequency amplifiers; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location
Singapore
Print_ISBN
1-4244-0387-1
Type
conf
DOI
10.1109/APCCAS.2006.342368
Filename
4145367
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