| Presentation | 2003/1/17 Evaluation of Site Attenuation of Fully Compact Anechoic Chamber using FDTD Method Masato KAWABATA, Yasuhiro ISHIDA, Kazuo SHIMADA, Atsuto KITANI, Nobuo KUWABARA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Generally, it is difficult to apply the ray tracing method for evaluating anechoic chamber characteristic less than 100MHz, so that we have studied to analyze anechoic chamber characteristic through the FDTD method. The cell size was set to about 40mm in order to analyze with personal computers. Initially, half-wave dipole antenna, shortened dipole antenna, and EM absorber were modeled for the FDTD method. In the analysis using half-wave dipole antenna, the deviation of the antenna factor between the FDTD method and the method of moment was applied as the compensation value. In the analysis using shortened dipole antenna, the diameter was given so that the impedance calculated through the FDTD method was equal to the one calculated through the method of moment. EM absorber was modeled by equivalent conversion to keep constant the wave impedance as well as the product of propagation constant and thickness. Actually, the site attenuation of fully compact anechoic chamber with ferrite tiles was analyzed through the FDTD method from 30MHz to 100MHz. The result agreed with the measured value within 2dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | FDTD method / Anechoic chamber / Site attenuation / Shortened dipole antenna / FM Absorber |
| Paper # | EMCJ2002-108 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2003/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Site Attenuation of Fully Compact Anechoic Chamber using FDTD Method |
| Sub Title (in English) | |
| Keyword(1) | FDTD method |
| Keyword(2) | Anechoic chamber |
| Keyword(3) | Site attenuation |
| Keyword(4) | Shortened dipole antenna |
| Keyword(5) | FM Absorber |
| 1st Author's Name | Masato KAWABATA |
| 1st Author's Affiliation | Fukuoka Industrial Technology() |
| 2nd Author's Name | Yasuhiro ISHIDA |
| 2nd Author's Affiliation | ADOX Fukuoka |
| 3rd Author's Name | Kazuo SHIMADA |
| 3rd Author's Affiliation | Riken Eletech Corporation |
| 4th Author's Name | Atsuto KITANI |
| 4th Author's Affiliation | Kyushu Institute of Technology |
| 5th Author's Name | Nobuo KUWABARA |
| 5th Author's Affiliation | Kyushu Institute of Technology |
| Date | 2003/1/17 |
| Paper # | EMCJ2002-108 |
| Volume (vol) | vol.102 |
| Number (no) | 591 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |