Tunable ladder-type realization of current-mode elliptic filters


Ozoguz S., TOKER A.

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, vol.56, no.3, pp.193-199, 2002 (SCI-Expanded) identifier identifier

Abstract

It is shown that a new series FDNR-R equivalent circuit using current controlled current conveyors (CCCHs) allows effective realization of jomega-axis zeros which are known to complicate the active implementation of ladder-type elliptic filters. The resulting ladder-type elliptic filter employs all grounded capacitors while keeping the number of active elements small. Also, the filter parameters are electronically tunable, which is important from integration point of view.