Title
A 900-MHz bandwidth analog baseband circuit with 1-dB step and 30-dB gain dynamic range
Abstract
A wide-bandwidth analog baseband circuit with digital gain control is implemented in a 65-nm CMOS process. The proposed circuit adopts a variable transconductance amplifier, which achieves constant bandwidth regardless of the gain settings. Bandwidth variation is less than ±1.2 % within the gain control range of 20 dB. The proposed analog baseband circuit has in-phase and quadrature-phase paths and draws 24.8 mA from a 1.2-V power supply. Measured results show that 1-dB step gain control with 0.25-dB differential nonlinearity (DNL) for 30-dB range and I/Q gain matching accuracy of 0.15 dB is achieved.
Year
DOI
Venue
2010
10.1109/ESSCIRC.2010.5619744
Seville
Keywords
DocType
ISSN
cmos integrated circuits,amplifiers,analogue circuits,gain control,cmos process,differential nonlinearity,digital gain control,frequency 900 mhz,gain 1 db,gain 30 db,quadrature-phase paths,variable transconductance amplifier,wide-bandwidth analog baseband circuit,frequency control,gain,dynamic range,baseband
Conference
1930-8833
ISBN
Citations 
PageRank 
978-1-4244-6662-7
6
1.23
References 
Authors
1
3
Name
Order
Citations
PageRank
Hosoya, M.161.23
Toshiya Mitomo27819.84
Watanabe, O.361.23