Wideband and low‐loss waveguides of nonuniform cross‐section. Issue 2 (16th June 2014)

• Record Type: Journal Article
• Authors: Hoseini, M.; Khalaj Amirhosseini, M.; Sedighy, S. H.; Vadjed Samiei, M. H.
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 25:Issue 2(2015)
• Page Start: 115
• Page End: 121
• Publication Date: 2014-06-16
• Subjects: Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.20830
• Languages: English
• ISSNs: 1096-4290

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>Waveguides of nonuniform cross‐section are introduced, analyzed and then their cross‐section is optimized to reach wideband and low‐loss waveguides. The waveguide cross‐section is defined as a Fourier series whose unknown coefficients are optimized using genetic algorithm to reach a proper cross‐section for waveguide. A verified finite difference method is used in analysis stage of optimization. The results show that optimum designed nonuniform cross‐section waveguides have lower conductor attenuation constant in comparison with double ridged waveguides of the same bandwidth. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:115–121, 2015.</p> </abstract>