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Community genetic algorithm design of symmetric E ‐plane microwave filters
Author(s) -
Weile Daniel S.,
Michielssen Eric
Publication year - 1999
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19990405)21:1<28::aid-mop8>3.0.co;2-r
Subject(s) - genetic algorithm , robustness (evolution) , passband , computation , band pass filter , microwave , algorithm , electronic engineering , algorithm design , computer science , engineering , mathematical optimization , mathematics , telecommunications , biochemistry , chemistry , gene
The design of inductive E ‐plane microwave filters using a community genetic algorithm is discussed. The analysis of such devices necessary for their optimization is accomplished using an accurate equivalent circuit technique that speeds the electromagnetic characterization of the filters, making stochastic optimization feasible. The community genetic algorithm is introduced as a two‐tiered simple genetic algorithm. The stratified nature of this novel algorithm allows it to reuse redundant computations in the filter characterizations, speeding its convergence compared to a simple genetic algorithm. Moreover, the community structure of the algorithm is shown to enhance its robustness. The algorithm is applied to the design of bandpass filters with a prescribed maximum passband rejection, and numerical results are shown for a four‐post and a six‐post filter. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 28–35, 1999.