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A current‐mode automatic frequency tuning system for filters with current mirrors
Author(s) -
Souliotis George
Publication year - 2010
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.589
Subject(s) - current (fluid) , current mirror , mode (computer interface) , electronic engineering , computer science , scheme (mathematics) , master/slave , engineering , electrical engineering , voltage , mathematics , transistor , mathematical analysis , operating system
A new current‐mode automatic frequency tuning system is proposed in this paper. The system is based on the master–slave technique and is suitable for integrated current‐mode filters based on current mirrors. Automatic control is accomplished by controlling the bias current of the current mirrors employed in the master and slave filters. The proposed scheme has been applied in the leapfrog and wave filters and the corresponding simulation results confirm its validity. Copyright © 2009 John Wiley & Sons, Ltd.