| Presentation | 2018-07-27 On Fast SAR assessment for some mobile communication devices Yuto Shimizu, Tomoaki Nagaoka, Nozomu Ishii, Soichi Watanabe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A specific absorption rate (SAR) is used for an assessment of a human exposure from wireless communication devices. Current conformity assessment procedure, which is called as full SAR measurement, evaluates the SARs in all available frequency bands and device conditions. However, IEC62209-1 provides a fast SAR measurement procedure to reduce a measurement time. In this study, we evaluate peak spatial SARs of five mobile phones with fast SAR measurement procedure. From these results, two of five results did not match results obtained by full SAR measurement procedure with a difference of 7 %. This problem can be solved by measuring the SARs in high and low channel of the frequency bands which obtain the highest SAR in middle channel. In addition, we consider a correlation between a measurement time reduction and an uncertainty of the SAR measurement, because fast SAR measurement uses measurement uncertainty to decide the measurement settings. The results show that increasing the uncertainty by three times results in a 25 % increase in measurement time. From this reason, it is necessary to decrease the measurement uncertainty for reducing the measurement time. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | human exposure / SAR / mobile communication devices / fast SAR measurement |
| Paper # | EMCJ2018-24 |
| Date of Issue | 2018-07-20 (EMCJ) |
| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2018/7/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Young Scientist Meeting |
| Chair | Osami Wada(Kyoto Univ.) |
| Vice Chair | Kensei Oh(Nagoya Inst. of Tech.) |
| Secretary | Kensei Oh(Tokyo Inst. of Tech.) |
| Assistant | Shinobu Nagasawa(Mitsubishi Electric) / Shinichiro Yamamoto(Univ. of Hyogo) / Takanori Unou(Denso) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Compatibility |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On Fast SAR assessment for some mobile communication devices |
| Sub Title (in English) | |
| Keyword(1) | human exposure |
| Keyword(2) | SAR |
| Keyword(3) | mobile communication devices |
| Keyword(4) | fast SAR measurement |
| 1st Author's Name | Yuto Shimizu |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Tomoaki Nagaoka |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 3rd Author's Name | Nozomu Ishii |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology/Niigata University(NICT/Niigata Univ.) |
| 4th Author's Name | Soichi Watanabe |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2018-07-27 |
| Paper # | EMCJ2018-24 |
| Volume (vol) | vol.118 |
| Number (no) | EMCJ-162 |
| Page | pp.pp.13-18(EMCJ), |
| #Pages | 6 |
| Date of Issue | 2018-07-20 (EMCJ) |