Design of a Combined Filter to Reduce the Attenuation Decline in Magnitude Response-Reference-Cited by-同舟云学术

Design of a Combined Filter to Reduce the Attenuation Decline in Magnitude Response

Published:2023-05-04 Issue: Volume:18 Page:102-107
ISSN:2224-2856
Container-title:WSEAS TRANSACTIONS ON SYSTEMS AND CONTROL
language:en
Short-container-title:

Author:

Brtník Bohumil¹

Affiliation:

1. Faculty of Electrical Engineering and Informatics University of Pardubice Náměstí Čs. Legií 232, 530 02 Pardubice CZECH REPUBLIC

Abstract

Certain biquad filters structures are characterized by a reduction of the attenuation at higher frequencies, caused by the finite value of the output resistance of the operational amplifier. In this paper, the design of the combined BP filter without the described decreasing is discussed for which one possible solution is to replace one of the biquads with another biquad that does not have this property. The result is a combined filter from different structures. The methodology to design a combined BP filter without the described decreasing is described in detail with the parameters of such biquads. The results of the proposed numerical procedure are verified by computer simulation, for this purpose a SPICE-like program MC-10 is used.

Publisher

World Scientific and Engineering Academy and Society (WSEAS)

Subject

Artificial Intelligence,General Mathematics,Control and Systems Engineering

Reference14 articles.

1. R. Mancini, Op Amps For Everyone – Design Reference. Texas Instruments, USA, 2002.

2. J. Puncochar, Low Pass Filters Sallen and Key With Real Operational Amplifiers, Elektrorevue Vol.5, No.10, 2005, pp. 1-13.

3. J. Bicak, M. Leipert, M. Vlcek, A Linear Circuits and Systems. CTU publisher, Prague, 2007.

4. T. Dostal, K. Vrba, The Electric Filters, PC- DIR, Brno, CS, 1997.

5. J. Dostal, Operational Amplifiers. BEN publisher, Prague, CS, 2006.