A front-end filter with automatic center frequency tuning circuitry

Author

Chang, Yuyu ; Wills, Jack ; Choma, John, Jr.

Author_Institution

Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA

fYear

2001

fDate

2001

Firstpage

28

Lastpage

31

Abstract

A new automatic tuning circuit based on synchronous rectification scheme is proposed. The direct tuning circuit functions in the idle periods between the burst-mode transmissions. The proposed CMOS tuning circuit can be fully integrated with the front-end filter. Simulation results employing 0.5 μm CMOS technology have verified that the center frequency is automatically tuned to 1.25 GHz with 10% process variation presence. The deviation is 15 MHz, representing to only 1.2% error. The tuning circuit dissipates 34 mW power

Keywords

CMOS analogue integrated circuits; active filters; automatic frequency control; band-pass filters; circuit tuning; radiofrequency filters; 0.5 micron; 1.25 GHz; 34 mW; CMOS technology; active filters; automatic center frequency tuning; bandpass filters; burst-mode transmissions; front-end filter; process variation; synchronous rectification scheme; tuning circuit; Active filters; Band pass filters; CMOS technology; Circuit optimization; Clocks; Frequency; Master-slave; Silicon; Tuning; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Mixed-Signal Design, 2001. SSMSD. 2001 Southwest Symposium on

Conference_Location

Austin, TX

Print_ISBN

0-7803-6742-1

Type

conf

DOI

10.1109/SSMSD.2001.914932

Filename

914932