Eigenmode Solution of 2-D and 3-D Electromagnetic Cavities Containing Absorbing Materials Using the Jacobi–Davidson Algorithm
✍ Scribed by S.J. Cooke; B. Levush
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 125 KB
- Volume
- 157
- Category
- Article
- ISSN
- 0021-9991
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✦ Synopsis
Eigenmodes of electromagnetic cavities containing absorbing dielectric materials are determined using an adaptation of the Jacobi-Davidson technique to solve discrete matrix eigenequations derived from Maxwell's equations. The discretisations, obtained using finite difference and finite integration methods, give rise to non-Hermitian matrices, having complex eigenvalues, and the Jacobi-Davidson method is shown to be applicable even when very low-Q cavity eigenmodes exist in the presence of highly lossy dielectric or permeable materials. Examples are given of eigensolutions for both 2-D (cylindrically symmetric) and 3-D electromagnetic operators.