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A shape optimization library for the design of microwave components

Published online by Cambridge University Press:  18 November 2013

Najib Mahdi
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Stephane Bila*
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Serge Verdeyme
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Michel Aubourg
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Khaled Khoder
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Annie Bessaudou
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Françoise Cosset
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Christophe Durousseau
Affiliation:
XLIM UMR 7252, Université de Limoges/CNRS, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
Jérôme Puech
Affiliation:
CNES, 18 Avenue Edouard Belin, 31401 Toulouse Cedex, France
Laetitia Estagerie
Affiliation:
CNES, 18 Avenue Edouard Belin, 31401 Toulouse Cedex, France
Damien Pacaud
Affiliation:
THALES ALENIA SPACE, 26 Avenue J.F.Champollion, 31100 Toulouse Cedex, France
Hervé Leblond
Affiliation:
THALES ALENIA SPACE, 26 Avenue J.F.Champollion, 31100 Toulouse Cedex, France
*
Corresponding author: S. Bila Email: [email protected]

Abstract

This paper outlines an original shape optimization library backed by a three dimensional (3D) full-wave electromagnetic (EM) simulator, combining several efficient structural optimization techniques and suitable for viable computer-aided design (CAD) of complex microwave components. The microwave components are modeled by finite element method (FEM) and their dimensions and shape are optimized using four techniques: design of experiments (DOE), level-set method (LS), topology gradient (TG) method, and genetic algorithm (GA). The various methods allow determining the optimal geometry, shape or topology of 2D or 3D objects within the microwave device, by minimizing iteratively a cost function related to the desired specifications. Typical demonstration illustrates the versatility of the proposed library based on the design of a dual mode dielectric resonator filter in order to improve its unloaded quality factor by keeping the same frequency isolation, their accuracy and efficiency are verified by the available measured results.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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