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An iterative design procedure for the synthesis of generalized dual‐bandpass filters
Author(s) -
Deslandes Dominic,
Boone François
Publication year - 2009
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20384
Subject(s) - band pass filter , prototype filter , convergence (economics) , control theory (sociology) , iterative method , pole–zero plot , resonator , network synthesis filters , displacement (psychology) , iterative design , microwave , function (biology) , filter (signal processing) , computer science , electronic engineering , mathematics , filter design , algorithm , engineering , transfer function , mathematical optimization , telecommunications , electrical engineering , artificial intelligence , psychotherapist , economic growth , psychology , control (management) , computer vision , scheduling (production processes) , economics , biology , evolutionary biology
This article presents an iterative design technique to calculate the optimal position of transmission zeros in dual‐bandpass filters. In the proposed design technique, the characteristic function of the filter is linearized around the displacement of the transmission zeros. A linear system is then obtained and solved in combination with a damping technique used to guarantee the convergence. Design examples which demonstrate the efficiency of the proposed method are presented and an experimental verification at 4 GHz using open‐loop resonators validates the methodology. © 2009 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2009.