Title :
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
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;
Conference_Titel :
Mixed-Signal Design, 2001. SSMSD. 2001 Southwest Symposium on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-6742-1
DOI :
10.1109/SSMSD.2001.914932
