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Current tunable current-mode biquadratic filter using dual-output current followers
Author(s)
Date Issued
December 1, 2009
Type
Conference Paper
Abstract
This paper describes a current-mode multifunction filter with a minimum number of active and passive elements using dual-output current followers (DO-CFs) as active elements. By based on the dual-output current-controlled current conveyor (DO-CCCII)-based current followers, the proposed filter consists of only two DO-CFs and two grounded capacitor, without an external passive resistor requirement. The filter can realize all the standard biquadratic functions without changing the circuit configuration. Moreover, its natural angular frequency and bandwidth is controllable independently and electronically by adjusting an external bias current, and its active and passive sensitivities are low.
Citation
Apsipa ASC 2009 Asia Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, 315-318, 2009