| Presentation | 2003/11/13 Attenuation characteristics of SAR with an antenna close to a lossy media Shoichi KAJIWARA, Atsushi YAMAMOTO, Koichi OGAWA, Akihiro OZAKI, Yoshio KOYANAGI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we have considered the attenuation characteristics of SAR in a lossy media with regard to the distance between an antenna and the media. Analysis and measurement were performed by using a dipole antenna at 900MHz and a COST 244 cube phantom. From this, we introduce an expression representing the attenuation characteristics of SAR, which takes a loss due to a spatial spread of electromagnetic energy into consideration. In the case where an antenna is set at a spacing of more than λ/2π from the media, the attenuation characteristics of SAR are obtained from those of plane waves in the lossy media. In the case where a half-wavelength dipole antenna is located close to the media at a distance of less λ/2π, the attenuation characteristics of SAR are calculated from an expression that includes a loss caused by a spread of energy as a cylindrical wave. Moreover, when the length of antenna becomes short, it is found that a spatial attenuation factor caused by a spherical wave should be taken into account. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Lossy Media / SAR / Attenuation Characteristics / energy / dipole antenna |
| Paper # | A・P2003-160,RCS2003-166 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2003/11/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Attenuation characteristics of SAR with an antenna close to a lossy media |
| Sub Title (in English) | |
| Keyword(1) | Lossy Media |
| Keyword(2) | SAR |
| Keyword(3) | Attenuation Characteristics |
| Keyword(4) | energy |
| Keyword(5) | dipole antenna |
| 1st Author's Name | Shoichi KAJIWARA |
| 1st Author's Affiliation | Matsuchita Electric Industrial Co., Ltd() |
| 2nd Author's Name | Atsushi YAMAMOTO |
| 2nd Author's Affiliation | Matsuchita Electric Industrial Co., Ltd |
| 3rd Author's Name | Koichi OGAWA |
| 3rd Author's Affiliation | Matsuchita Electric Industrial Co., Ltd |
| 4th Author's Name | Akihiro OZAKI |
| 4th Author's Affiliation | Matsuchita Electric Industrial Co., Ltd |
| 5th Author's Name | Yoshio KOYANAGI |
| 5th Author's Affiliation | Panasonic Mobile Communications Co., Ltd. |
| Date | 2003/11/13 |
| Paper # | A・P2003-160,RCS2003-166 |
| Volume (vol) | vol.103 |
| Number (no) | 459 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |