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Design and predistortion of passive filters by optimization
Author(s) -
Gaunholt Hans
Publication year - 1974
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.4490020407
Subject(s) - predistortion , minification , control theory (sociology) , function (biology) , zero (linguistics) , error function , pole–zero plot , mathematics , computer science , transfer function , algorithm , mathematical optimization , engineering , telecommunications , bandwidth (computing) , amplifier , linguistics , philosophy , artificial intelligence , evolutionary biology , electrical engineering , biology , control (management)
A method has been developed for design of passive filters based on optimization in the complex frequency domain. On the basis of the observation that a network response takes on very large values near the poles and very small values near the zeros it is possible to select an error function with the value zero when the network under consideration has the wanted pole‐zero positions. Application of the damped least square algorithm for minimization of that error function has produced excellent results in design and predistortion of passive ladder filters.