| Presentation | 2006/4/13 Improved Hybrid-Domain MoM for Scattering and Radiation Problems Including 3D Dielectrics by Using Orthogonal Polynomial Expansion Amin SAEEDFAR, Kunio SAWAYA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report presents an integral equation approach with a new solution method to obtain external scattered fields and internal induced fields inside a dielectric body in two different cases. In one case, the dielectric object is illuminated by a plane wave and in the other case; it is located in close proximity of a thin-wire antenna. The tensor-volume integral equation (TVIE) is adopted for the former case and a system of coupled tensor-volume/line integral equations is applied for the latter problem. These problems have been previously investigated with an efficient Galerkin-based formulation using combined entire-domain and subdomain expansion using three-dimensional power polynomial basis functions. It has been shown that a compromise between accuracy and efficiency is achieved that by combining the entire-domain and subdomain basis functions. As an improvement, in this article, we apply a modified Legendre polynomial basis function which leads to an almost orthogonal expansion of the unknown polarization current inside the dielectric body. This basis function is derived from orthogonal Legendre polynomial, which is modified to impose the continuity condition of the currents between neighboring elements. This allows the use of high-order basis functions without introducing ill-conditioning of the resulting MoM matrix. Numerical results verify the accuracy of the method and confirm the condition number of the MoM matrix obtained with this new basis is much lower than 3D power polynomial function. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mixed-Domain Moment Method / Electromagnetic Wave Scattering by 3D Dielectric Bodies / Dipole Antenna / Tensor-Volume Integral Equation / Polynomial Expansion |
| Paper # | A・P2006-3 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2006/4/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improved Hybrid-Domain MoM for Scattering and Radiation Problems Including 3D Dielectrics by Using Orthogonal Polynomial Expansion |
| Sub Title (in English) | |
| Keyword(1) | Mixed-Domain Moment Method |
| Keyword(2) | Electromagnetic Wave Scattering by 3D Dielectric Bodies |
| Keyword(3) | Dipole Antenna |
| Keyword(4) | Tensor-Volume Integral Equation |
| Keyword(5) | Polynomial Expansion |
| 1st Author's Name | Amin SAEEDFAR |
| 1st Author's Affiliation | Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Kunio SAWAYA |
| 2nd Author's Affiliation | Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2006/4/13 |
| Paper # | A・P2006-3 |
| Volume (vol) | vol.106 |
| Number (no) | 13 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |