DocumentCode
3162544
Title
Digitally Controlled VGA for Low Power Low-IF Receivers
Author
Krcmar, M. ; Subramanian, Venkatachalam ; Boeck, G. ; Spiegel, S.
Author_Institution
Microwave Eng. Lab., Berlin Inst. of Technol., Berlin
fYear
2009
fDate
16-18 March 2009
Firstpage
1
Lastpage
3
Abstract
A digitally controlled variable gain amplifier (VGA) for low power, low-IF receivers is presented. The amplifier was designed and fabricated in IBM 7WL BiCMOS 180 nm technology. It shows a dynamic range of 45 dB with a maximum gain of 52 dB and a minimum gain of 7 dB. The gain variation is achieved by means of switched feedback resistors. These are controlled by a demultiplexer and 4 control bits. The 1 dB compression corresponds to 9 dBm of input power in a 50 Omega system and the 3-dB-bandwith is approximately 10 MHz. The overall power consumption is 13 mW.
Keywords
CMOS integrated circuits; amplifiers; integrated circuit design; receivers; demultiplexer; digitally controlled variable gain amplifier; low power low-IF receivers; power 13 mW; switched feedback resistors; 1f noise; Automatic control; Circuits; Digital control; Dynamic range; Feedback; Feeds; Gain; Resistors; Voltage; CMFB; CMOS; dynamic range; low IF; variable gain;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2009 German
Conference_Location
Munich
Print_ISBN
978-3-9812668-0-1
Electronic_ISBN
978-3-8007-3150-3
Type
conf
DOI
10.1109/GEMIC.2009.4815887
Filename
4815887
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