| Presentation | 2016-07-21 Expansion of Electromagnetic Field and Near-Field Gain in Lossy Homogeneous Medium Nozomu Ishii, Lira Hamada, Chakarothai Jerdvisanop, Kanako Wake, Soichi Watanabe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To evaluate SAR of RF devices operated in MHz band, the authors have studied a technique that uses near-field gain of reference antenna in the liquid. In this report, to clarify the distance property of the near-field gain, we formulate an asymptotic power series expansion of the near-field gain in terms of the inverse of the distance from the antenna, we asymptotically expand this series in terms of the inverse of the distance of the amplitude center of the antenna by using Panicali's method, and we find the distance property of the near-field gain which was derived by Dr. Hirose. To check the expansion theorem, which ensures the asymptotic power series expansion of the fields in the homogeneous lossy medium, a rigorous expression of the fields proposed by the current distribution can be derived by using the Fresnel approximation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | near-field gain / amplitude center / Friis transmission formula / asymptotic power series expansion / homogeneous lossy medium / SAR evaluation / probe calibration |
| Paper # | AP2016-49 |
| Date of Issue | 2016-07-13 (AP) |
| Conference Information | |
| Committee | AP / SAT / SANE |
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| Conference Date | 2016/7/20(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Otaru port marina |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Remote sensing, Radio propagation, Antennas and Propagation, Sattelite Communication |
| Chair | Keizo Cho(Chiba Inst. of Tech.) / Takatoshi Sugiyama(Kogakuin Univ.) / Hirokazu Kobayashi(Osaka Inst. of Tech.) |
| Vice Chair | Hisato Iwai(Doshisha Univ.) / Toshinori Susuki(Tohoku Gakuin Univ.) / Hiroyuki Tsuji(NICT) / Takahide Mizuno(JAXA) / Toshifumi Moriyama(Nagasaki Univ.) |
| Secretary | Hisato Iwai(Niigata Univ.) / Toshinori Susuki(NTT DoCoMo) / Hiroyuki Tsuji(NTT) / Takahide Mizuno(KDDI R&D Labs.) / Toshifumi Moriyama(JAXA) |
| Assistant | Nobuyasu Takemura(Nippon Inst. of Tech.) / / Atsushi Kezuka(ENRI) / Manabu Akita(Univ. of Electro-Comm.) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Satellite Telecommunications / Technical Committee on Space, Aeronautical and Navigational Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Expansion of Electromagnetic Field and Near-Field Gain in Lossy Homogeneous Medium |
| Sub Title (in English) | |
| Keyword(1) | near-field gain |
| Keyword(2) | amplitude center |
| Keyword(3) | Friis transmission formula |
| Keyword(4) | asymptotic power series expansion |
| Keyword(5) | homogeneous lossy medium |
| Keyword(6) | SAR evaluation |
| Keyword(7) | probe calibration |
| 1st Author's Name | Nozomu Ishii |
| 1st Author's Affiliation | Niigata University(Niigata Univ.) |
| 2nd Author's Name | Lira Hamada |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 3rd Author's Name | Chakarothai Jerdvisanop |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 4th Author's Name | Kanako Wake |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 5th Author's Name | Soichi Watanabe |
| 5th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2016-07-21 |
| Paper # | AP2016-49 |
| Volume (vol) | vol.116 |
| Number (no) | AP-142 |
| Page | pp.pp.73-78(AP), |
| #Pages | 6 |
| Date of Issue | 2016-07-13 (AP) |