| Presentation | 2009-06-05 Uncertaitnty of GHz-Band Whole-Body Average SARs in Infants Based on Kaup Indicies Hironobu MIWA, Akimasa HIRATA, Osamu FUJIWARA, Tomoaki NAGAOKA, Soichi WATANABE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We previously showed that a strong correlation exists between the absorption cross section and the body surface area of a human for 0.3-2GHz far field exposure, and proposed a formula for estimating the whole-body-average specific absorption rates (WBA-SARs) in terms of the height and the weight. In this study, to evaluate the variability of the WBA-SARs in infants based on their physique, we derived a formula including Kaup indices of infants, which are being used to check their growth, and thereby estimated the WBA-SARs in infants with respect their age from 0 month to three years. As a result, we found that under the same height/weight, the smaller the Kaup indices are, the larger the WBA-SARs become, and that the variability of the WBA-SARs is around 15% at the same age. To validate these findings, using the FDTD method, we calculated the GHz-band WBA-SARs in numerical models corresponding to infants with the age of 0,1,3,6 and 9 months, which were all scaled down the anatomically based Japanese three-year child model developed by NICT (National Institute of Information and Communications Technology). Results show that the FDTD-computed WBA-SARs are smaller by 20% compared to those estimated for infants having the median height and the Kaup index with 0.5 percentiles, which provide conservative WBA-SARs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Infants / whole-body average SAR / uncertainty / Kaup index / conservative level |
| Paper # | EMCJ2009-32 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2009/5/29(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 | 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) | Uncertaitnty of GHz-Band Whole-Body Average SARs in Infants Based on Kaup Indicies |
| Sub Title (in English) | |
| Keyword(1) | Infants |
| Keyword(2) | whole-body average SAR |
| Keyword(3) | uncertainty |
| Keyword(4) | Kaup index |
| Keyword(5) | conservative level |
| 1st Author's Name | Hironobu MIWA |
| 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 | 2009-06-05 |
| Paper # | EMCJ2009-32 |
| Volume (vol) | vol.109 |
| Number (no) | 76 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |