| Presentation | 2019-12-13 A design on a matching section of a waveguide for a SAR probe calibration Yuto Shimizu, Nozomu Ishii, Tomoaki Nagaoka, Kanako Wake, Soichi Watanabe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a compliance test of wireless communication devices, a head or a flat phantom filled with a human tissue equivalent liquid is employed. A specific absorption rate (SAR) is evaluated by an electric field which propagates from the wireless device set on outside of the phantom into the human tissue equivalent liquid. The electric field intensity in the liquid is measured by an output voltage of a SAR probe. A relationship between the electric field and the output voltage, in other words, a probe calibration is conducted by inserting the a SAR probe to a waveguide filled with the human tissue equivalent liquid. The waveguide used for the probe calibration is divided into hollow and liquid sections, and a dielectric slab is inserted between the two sections as the matching section. The matching section design (thickness, dielectric property) have been discussed based on an experimental rule. In this study, we formulated an electric field distribution in the calibration waveguide. Secondly, based on this formulation, optimal parameters were derived to minimize a reflection in the matching section. Finally, we also considered the optimal thickness when a realistic dielectric material is used, and the result was compared with that of an electromagnetic simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | SAR / probe calibration / waveguide / exposure assessment |
| Paper # | EMCJ2019-77 |
| Date of Issue | 2019-12-06 (EMCJ) |
| Conference Information | |
| Committee | EMCJ / IEE-EMC |
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| Conference Date | 2019/12/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chukyo University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kensei Oh(Nagoya Inst. of Tech.) / Ken-ichi Yamazaki(電中研) |
| Vice Chair | Atsuhiro Nishikata(Tokyo Inst. of Tech.) / Shinobu Ishigami(東北学院大) / Masateru Ikehata(鉄道総研) |
| Secretary | Atsuhiro Nishikata(Tokyo Inst. of Tech.) / Shinobu Ishigami(Denso) / Masateru Ikehata |
| Assistant | Nami Sasaki(Seiwa Electric MFG) / Hiroyoshi Shida(Tokin EMC Engineering) / Sho Muroga(Akita Univ.) / Takaaki Ibuchi(阪大) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Compatibility / Technical Meeting 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) | A design on a matching section of a waveguide for a SAR probe calibration |
| Sub Title (in English) | |
| Keyword(1) | SAR |
| Keyword(2) | probe calibration |
| Keyword(3) | waveguide |
| Keyword(4) | exposure assessment |
| 1st Author's Name | Yuto Shimizu |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Nozomu Ishii |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology/Niigata University(NICT/Niigata Univ.) |
| 3rd Author's Name | Tomoaki Nagaoka |
| 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 | 2019-12-13 |
| Paper # | EMCJ2019-77 |
| Volume (vol) | vol.119 |
| Number (no) | EMCJ-338 |
| Page | pp.pp.13-18(EMCJ), |
| #Pages | 6 |
| Date of Issue | 2019-12-06 (EMCJ) |