Waveguide band-stop filter design using optimized pixelated inserts

A technique is introduced for designing band‐stop waveguide filters by optimizing a grid of metallic pixels on a dielectric sheet placed longitudinal to the waveguide axis. By using topology optimization and a genetic algorithm, compact broadband waveguide filters may be produced that are easy to fa...

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Bibliographic Details
Published in:Microwave and optical technology letters 2013-01, Vol.55 (1), p.141-143
Main Authors: Ouedraogo, Raoul O., Rothwell, Edward J., Diaz, Alejandro R., Fuchi, Kazuko, Tang, Junyan
Format: Article
Language:English
Subjects:
broadband
genetic algorithm
metamaterials
microwave filters
optimization methods
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Summary:A technique is introduced for designing band‐stop waveguide filters by optimizing a grid of metallic pixels on a dielectric sheet placed longitudinal to the waveguide axis. By using topology optimization and a genetic algorithm, compact broadband waveguide filters may be produced that are easy to fabricate at low cost. Measured and simulated performance show strong rejection in the stopband with a rapid roll off at the band edges and low insertion loss outside the stopband. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:141–143, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27246
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.27246