Design of a low-power CMOS baseband circuit for wideband CDMA testbed

Author

Shi, Chunlei ; Wu, Yue ; Ismail, Mahamod

Author_Institution

Analog VLSI Lab., Ohio State Univ., Columbus, OH, USA

fYear

2000

fDate

2000

Firstpage

222

Lastpage

224

Abstract

In this paper, the design and performance of a CMOS base-band circuit for WCDMA direct conversion receiver are presented. Consisting of one 5th-order anti-aliasing filter, one 4th-order tunable channel filter, and three variable gain amplifier (VGA) stages, the baseband chain provides 72 dB gain range with 2 dB gain step and is tunable to select three different bandwidths (from 5 MHz to 20 MHz radio-frequency spacing). It dissipates only 18 mW from a single 3V supply. The input IP3 is 10 dBm, and the input-referred noise in the passband is 41nV/√(Hz).

Keywords

antialiasing; circuit tuning; code division multiple access; land mobile radio; low-power electronics; multimedia communication; 18 mW; 3 V; 5 to 20 MHz; IP3; anti-aliasing filter; direct conversion receiver; input-referred noise; low-power CMOS baseband circuit; radio-frequency spacing; tunable channel filter; variable gain amplifier stages; wideband CDMA testbed; Bandwidth; Baseband; Broadband amplifiers; Circuit testing; Filters; Gain; Multiaccess communication; Radiofrequency amplifiers; Tunable circuits and devices; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Low Power Electronics and Design, 2000. ISLPED '00. Proceedings of the 2000 International Symposium on

Print_ISBN

1-58113-190-9

Type

conf

DOI

10.1109/LPE.2000.155284

Filename

876788