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Multiloop feedback unsymmetrical active filters using quads
Author(s) -
Gonuleren Ali Nur
Publication year - 1982
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.4490100102
Subject(s) - transfer function , control theory (sociology) , feed forward , topology (electrical circuits) , network topology , function (biology) , mathematics , pole–zero plot , computer science , engineering , control engineering , combinatorics , control (management) , artificial intelligence , evolutionary biology , electrical engineering , biology , operating system
In this paper, a general design procedure for high order unsymmetrical active filters is presented using a special configuration of quads. Quads are 4th order subsection blocks using biquads in a special manner. It is shown that the determination of network parameters is not dependent on frequency range, and that the design procedure is simpler than other multiloop feedback (MF) topologies. The transmission zeros of the transfer function are derived directly from the zeros of the biquadratic blocks and thus feedforward or summation techniques are not required.