DocumentCode
1434641
Title
Wideband variable gain amplifier with noise cancellation
Author
El-Gabaly, Ahmed M. ; Saavedra, Carlos E.
Author_Institution
Dept. of Electr. & Comput. Eng., Queen´s Univ., Kingston, ON, Canada
Volume
47
Issue
2
fYear
2011
fDate
1/1/2011 12:00:00 AM
Firstpage
116
Lastpage
118
Abstract
A 1-5-GHz noise-cancelling variable gain amplifier is presented in 0.18--m CMOS technology that achieves a low noise figure (NF) below 4.8-dB over an 11-dB gain range. Its NF is as low as 3.2-dB for the gain range of 5.5 to 11-dB, while its input return loss is better than 13-dB over the entire gain range of -5 to 11-dB. The measured input-referred two-tone third-order intercept point (IIP3) at 2.4-GHz is better than 0 and -4.5-dBm at minimum and maximum gain, respectively. The circuit occupies an area of only 0.067-mm2 and consumes less than 19 mW of power from a 1.8 V supply.
Keywords
CMOS integrated circuits; MMIC amplifiers; field effect MMIC; wideband amplifiers; CMOS technology; frequency 1 GHz to 5 GHz; gain 5.5 dB to 11 dB; noise cancellation; size 0.18 mum; third-order intercept point; voltage 1.8 V; wideband variable gain amplifier;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.3226
Filename
5700007
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