On-chip automatic direct tuning circuitry based on the synchronous rectification scheme for CMOS gigahertz band front-end filters

A new automatic tuning circuit based on synchronous rectification scheme is proposed and 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 /spl mu/m CMOS technology...

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Bibliographic Details
Main Authors: Chang, Y., Wills, J., Choma, J.
Format: Conference Proceeding
Language:English
Subjects:
Active filters
Band pass filters
Circuit optimization
Clocks
CMOS technology
Master-slave
Radio frequency
Silicon
Tuning
Voltage-controlled oscillators
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Description
Summary:A new automatic tuning circuit based on synchronous rectification scheme is proposed and 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 /spl mu/m 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.
DOI:10.1109/ISCAS.2001.922218