Design of CDBA-based active polyphase filter for low-IF receiver applications

Authors

MEHMET SAĞBAŞ

DOI

10.3906/elk-0912-337

Abstract

A novel first-order active-RC polyphase filter section, using current differencing buffered amplifiers (CDBAs), is presented. The section uses 6 resistors, 2 capacitors, and 2 CDBAs. The transfer function of the proposed section has a single pole and optionally a single zero. Increasing the number of cascading sections, any higher order polyphase filter can be realized. This paper also introduces the leakage caused by element deviation and the effects of the amplifier in nonideal cases. Furthermore, nonideal performances of the proposed filter section are tested with PSpice simulations.

Keywords

Active polyphase filters, current differencing buffered amplifiers, active filters, complex filters, low-IF receivers

First Page

565

Last Page

574

Recommended Citation

SAĞBAŞ, MEHMET (2011) "Design of CDBA-based active polyphase filter for low-IF receiver applications," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 19: No. 4, Article 4. https://doi.org/10.3906/elk-0912-337
Available at: https://journals.tubitak.gov.tr/elektrik/vol19/iss4/4