| Presentation | 2008-07-17 FDTD Calculation of Whole-Body Average SAR in 9 Month Infant Model For Far-Field Exposure at GHz Band Naoki ITO, Akimasa HIRATA, Osamu FUJIWARA, Tomoaki NAGAOKA, Soichi WATANABE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We calculated the whole-body average SAR (specific absorption rate) for 1-6GHz far-field exposure for spheroidal and ellipsoidal models corresponding to a Japanese 9-month infant model. As a result, we found that in comparison with the whole-body average SAR in the infant model, the ellipsoidal model with the same frontally-projected area as that of the infant model provides an underestimate, while the ellipsoidal model with the same surface area gives an overestimate. In addition, whole-body average SARs of the homogeneous infant model was found to be affected by the electrical constant of tissue, regardless of the model shape and polarization of incident waves. These findings suggest that the ellipsoidal model having the same surface area as that of the infant model and electrical constant of muscle tissue provides a conservative whole-body average SAR. Based on the Kaup index for Japanese 9-month infants, therefore, we developed linearly-reduced 9-month infant models and the corresponding muscle-ellipsoidals, and re-calculated their whole-body average SARs with respect to body shapes. The results reveal that the ellipsoid with the same surface area as that of 9-month infant model gives a conservative whole-body average SAR, whose variability in 9-month infants reaches 15%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | far-field exposure / 9-month infant model / whole-body average SAR / conservative prediction |
| Paper # | EMCJ2008-36 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2008/7/10(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) | FDTD Calculation of Whole-Body Average SAR in 9 Month Infant Model For Far-Field Exposure at GHz Band |
| Sub Title (in English) | |
| Keyword(1) | far-field exposure |
| Keyword(2) | 9-month infant model |
| Keyword(3) | whole-body average SAR |
| Keyword(4) | conservative prediction |
| 1st Author's Name | Naoki ITO |
| 1st Author's Affiliation | Nagoya Institute of Technology() |
| 2nd Author's Name | Akimasa HIRATA |
| 2nd Author's Affiliation | Nagoya Institute of Technology |
| 3rd Author's Name | Osamu FUJIWARA |
| 3rd Author's Affiliation | Nagoya Institute of Technology |
| 4th Author's Name | Tomoaki NAGAOKA |
| 4th Author's Affiliation | National Institute of Information and Communications Technology |
| 5th Author's Name | Soichi WATANABE |
| 5th Author's Affiliation | National Institute of Information and Communications Technology |
| Date | 2008-07-17 |
| Paper # | EMCJ2008-36 |
| Volume (vol) | vol.108 |
| Number (no) | 132 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |