Figure 3 Computed the normalized attenuation index NΠ versus Ε½ . y 3 the reduced film thickness Dr = 10 for different material covers. The curves from the bottom to top are related to n s 1.0, c n s 1.25, n s 1.54. The rest of the data are β X s y39.88 y i15.56 c c f w x 10 , s 0.6328 m, and s 35Π
Numerical methods for scattering problems by curved gratings at high frequencies
β Scribed by H. Ammari; P. Ferreira
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 259 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0170-4214
No coin nor oath required. For personal study only.
β¦ Synopsis
Communicated by J. C. Nedelec
A new numerical method is derived for the calculation of high-frequency asymptotic expansions of the scalar wave scattered by curved periodic structures. Optimal error estimates for this method are established.
1997 by B. G. Teubner Stuttgart-John Wiley & Sons Ltd.
π SIMILAR VOLUMES
In the last few years, the hybrid moment-merhod/finite-element-method (MM/FEM) approach has been wide& used to solve electromagnetic scatteringproblems. However, as is well known, this method faik at the resonance frequencies of a cauiv that is obtained by covering the surface of a scatterer with a
A novel hybrid finite-element method (FEM) and highfrequency technique (HFT) for the efficient analysis of scattering and radiation problems is presented. The proposed hybrid method makes use of an iterative FEM for open-region problems that allows easy hybridization with other numerical techniques.