| Presentation | 2005-11-17 Measurement Method for Permittivity Tensor of Lossy Anisotropic Material Based on Free-space Method in Millimeter-wave Band and Utilization for Wave Absorber Taiji SAKAI, Osamu HASHIMOTO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Rubber sheets mixed with carbon particles can be utilized to wave absorbers. However, these materials usually have anisotropy which comes from the rolling method of manufacturing, Because the carbon tends to be aligned along the rolling direction. So, complex relative permittivity tensor needs to be measured for such as designing of anisotropic wave absorbers. In this paper, we proposed measurement method for complex relative permittivity tensor based on free-space transmission method using focusing lens and a vector network analyzer. As an example of application, absorption value of a wave absorber was calculated using the results of tensor permittivity measured by the proposed transmission method and reflection method respectively. Measured tensor Permittivity shows good agreement between the proposed transmission method and the reflection method. And absorption value shows good agreement between the theoretical calculation and the measurement. As a result, proposed method shows measurement accuracy of tensor permittivity for such as design of wave absorbers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Complex Relative Permittivity Tensor / Focusing Lens Antenna / Free-Space Reflection Method |
| Paper # | ED2005-172,MW2005-127 |
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| Conference Information | |
| Committee | ED |
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| Conference Date | 2005/11/10(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electron Devices (ED) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Measurement Method for Permittivity Tensor of Lossy Anisotropic Material Based on Free-space Method in Millimeter-wave Band and Utilization for Wave Absorber |
| Sub Title (in English) | |
| Keyword(1) | Complex Relative Permittivity Tensor |
| Keyword(2) | Focusing Lens Antenna |
| Keyword(3) | Free-Space Reflection Method |
| 1st Author's Name | Taiji SAKAI |
| 1st Author's Affiliation | Department of Electrical Engineering and Electronics, Aoyama Gakuin University() |
| 2nd Author's Name | Osamu HASHIMOTO |
| 2nd Author's Affiliation | Department of Electrical Engineering and Electronics, Aoyama Gakuin University |
| Date | 2005-11-17 |
| Paper # | ED2005-172,MW2005-127 |
| Volume (vol) | vol.105 |
| Number (no) | 400 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |