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Topology optimization of compact wideband coaxial-to-waveguide transitions with minimum-size control
Umeå University, Faculty of Science and Technology, Department of Computing Science. Department of Electronics and Electrical Communications, Menoufia University, Menouf, Egypt.ORCID iD: 0000-0002-1318-7519
Umeå University, Faculty of Science and Technology, Department of Computing Science.
Umeå University, Faculty of Science and Technology, Department of Computing Science.
Umeå University, Faculty of Science and Technology, Department of Computing Science.ORCID iD: 0000-0003-0473-3263
2018 (English)In: Structural and multidisciplinary optimization (Print), ISSN 1615-147X, E-ISSN 1615-1488, Vol. 57, no 4, p. 1765-1777Article in journal (Refereed) Published
Abstract [en]

This paper presents a density-based topology optimization approach to design compact wideband coaxial-to-waveguide transitions. The underlying optimization problem shows a strong self penalization towards binary solutions, which entails mesh-dependent designs that generally exhibit poor performance. To address the self penalization issue, we develop a filtering approach that consists of two phases. The first phase aims to relax the self penalization by using a sequence of linear filters. The second phase relies on nonlinear filters and aims to obtain binary solutions and to impose minimum-size control on the final design. We present results for optimizing compact transitions between a 50-Ohm coaxial cable and a standard WR90 waveguide operating in the X-band (8-12 GHz).

Place, publisher, year, edition, pages
New York: Springer, 2018. Vol. 57, no 4, p. 1765-1777
Keywords [en]
Maxwell's equations, sensitivity analysis, optimization, waveguide
National Category
Communication Systems Computer Sciences
Identifiers
URN: urn:nbn:se:umu:diva-146663DOI: 10.1007/s00158-017-1844-8ISI: 000430101600022OAI: oai:DiVA.org:umu-146663DiVA, id: diva2:1198118
Available from: 2018-04-16 Created: 2018-04-16 Last updated: 2018-06-09Bibliographically approved

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Hassan, EmadeldeenWadbro, EddieHägg, LinusBerggren, Martin

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