Shape optimized design of microwave dielectric resonators by level-set and topology gradient methods
✍ Scribed by H. Khalil; S. Bila; M. Aubourg; D. Baillargeat; S. Verdeyme; F. Jouve; C. Delage; T. Chartier
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 525 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1096-4290
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✦ Synopsis
The finite element method is coupled with the topology gradient (TG) and levelset (LS) methods for optimizing the shape of microwave components using a computer-aided design model. On the one hand, the LS approach is based on the classical shape derivative; while on the other hand, the TG method is precisely designed for introducing new perturbations in the optimization domain. These two approaches, which consist in minimizing a cost function related to the component behavior, are first described. Regarding given electrical specifications, these techniques are applied to optimize the distribution of ceramic parts of a dual-mode resonator in order to improve its behavior. The optimized dielectric resonators result in a wide spurious-free stop band. A comparison between classical and optimized dual mode resonator is presented. Theoretical results are then validated by careful measurements.