Presented at the 1998 International Workshop Symbolic Methods for Analysis and Design

A Tool for Symbolic Analysis and Design of Analog Active Filters

Dejan V. Tosic (1), Miroslav D. Lutovac (1), Brian L. Evans (2), and Ivan M. Markoski (3)

(1) Telecommunications and Electronics Institute, University of Belgrade, Batajnicki put 23, 11080 Belgrade, Yugoslavia and
(2) Department of Electrical and Computer Engineering, Engineering Science Building, The University of Texas at Austin, Austin, TX 78712-1084 USA
(3) KPN Research, P.O.Box 421, 2260 AK Leidschendam, The Netherlands


In this paper we introduce a tool for symbolic analysis and design of analog active filters. It has been developed in Mathematica. The tool can be used to draw circuit schematics, and to formulate and solve analysis and design equations. We present a closed-form solution for a design problem that would otherwise only be possible by numerical optimization or trial-and-error guessing and simulation. Illustrative examples are given to demonstrate filter design with minimization of the sensitivity, and optimization of element values to have prescribed values.

The full paper is available in PDF, Postscript, and GNU-Compressed Postscript.

Last Updated 01/15/99.