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 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 3
  • Publication Date: 2002
  • Doi Number: 10.1078/1434-8411-54100094
  • Title of Journal : AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
  • Page Numbers: pp.193-199

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.