| Presentation | 2003/5/23 An Estimation Method of SAR by Measuring the Magnetic Field in Free Space Akihiro OZAKI, Shoichi KAJIWARA, Atsushi YAMAMOTO, Koichi OGAWA, Yoshio KOYANAGI, Yutaka SAITOH, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, there has been growing concern about the possible influence of electromagnetic radiation from mobile radio antennas on the human body and whether it constitutes an electromagnetic health hazard. In response to these fears, regulation by low regarding the safety limit of the SAR (Specific Absorption Rate) was implemented in Japan in June 2002. The present standard SAR measurement system requires a great deal of investment cost and measurement time, usually several hours, and thus is not suitable for practical use at the factory production stage. To solve these difficulties, we have developed a new evaluation system that makes use of an algorithm that the SAR estimated from magnetic field distribution in the vicinity of a cellular phone in free space. The equipment is also capable of calculating an average SAR value by evaluating 3D-field distribution from measured 2D-magnetic fields. All the procedure required for estimating the SAR are automatically processed in a computer, and accordingly are executed faster than a conventional SAR diagnostic system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Local SAR / Magnetic Near Field / Shielded Loop Antenna / Measurement System |
| Paper # | EMCJ2003-15 (2003-05) |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2003/5/23(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) | An Estimation Method of SAR by Measuring the Magnetic Field in Free Space |
| Sub Title (in English) | |
| Keyword(1) | Local SAR |
| Keyword(2) | Magnetic Near Field |
| Keyword(3) | Shielded Loop Antenna |
| Keyword(4) | Measurement System |
| 1st Author's Name | Akihiro OZAKI |
| 1st Author's Affiliation | Matsushita Electric Ind. Co., Ltd.() |
| 2nd Author's Name | Shoichi KAJIWARA |
| 2nd Author's Affiliation | Matsushita Electric Ind. Co., Ltd. |
| 3rd Author's Name | Atsushi YAMAMOTO |
| 3rd Author's Affiliation | Matsushita Electric Ind. Co., Ltd. |
| 4th Author's Name | Koichi OGAWA |
| 4th Author's Affiliation | Matsushita Electric Ind. Co., Ltd. |
| 5th Author's Name | Yoshio KOYANAGI |
| 5th Author's Affiliation | Panasonic Mobile Communications Co., Ltd. |
| 6th Author's Name | Yutaka SAITOH |
| 6th Author's Affiliation | Panasonic Mobile Communications Kanazawa R&D Lab. Co., Ltd. |
| Date | 2003/5/23 |
| Paper # | EMCJ2003-15 (2003-05) |
| Volume (vol) | vol.103 |
| Number (no) | 101 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |