A self-calibration technique for mismatches in image-reject receivers

Author

Elmala, Mostafa A I ; Embabi, Sherif H K

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

fYear

2002

fDate

2002

Firstpage

251

Lastpage

254

Abstract

This paper presents a modified image-reject Weaver architecture. The design automatically calibrates for phase and gain mismatches that limit the performance of image-reject receivers. On-line or off-line calibrations are possible without using any calibrating tone. An experimental CMOS prototype RF front-end operating at 1.8 GHz achieves an image rejection ratio of 59 dB using on-line calibration. The design was fabricated in a 0.35 μm CMOS process and dissipates 160 mW from a 3 V supply during on-line calibration

Keywords

CMOS integrated circuits; UHF integrated circuits; calibration; integrated circuit design; integrated circuit measurement; radio receivers; 0.35 micron; 1.8 GHz; 160 mW; 3 V; CMOS process; CMOS prototype RF front-end; calibrating tone; gain mismatches; image rejection ratio; image-reject receivers; modified image-reject Weaver architecture; off-line calibrations; on-line calibration; on-line calibrations; phase mismatches; power dissipation; self-calibration technique; CMOS process; Calibration; Instruments; Low pass filters; Performance gain; Prototypes; RF signals; Radio frequency; Signal generators; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002

Conference_Location

Orlando, FL

Print_ISBN

0-7803-7250-6

Type

conf

DOI

10.1109/CICC.2002.1012807

Filename

1012807