| Presentation | 2013-06-17 Shaping Magnetic-Field Patterns with Multiple Current Loops : Toward Short-Range Wireless Identification Ai-ichiro SASAKI, Takayuki OGASAWARA, Koji FUJII, Hiroki MORIMURA, Osamu KAGAMI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a concept of wireless identification systems whose communication area is restricted to about 50 cm from a reader/writer. To realize such systems, it is required that magnetic fields are rapidly attenuated outside the communication area. In this paper, a method for controlling spatial distribution of magnetoquasistatic fields is investigated. The key concept of the method is designing multiple current loops so as to cancel the sum of magnetic moments associated with the loops. To validate the method, we evaluated magnetic-field distribution around a concentric double-current loop and observed the rapid attenuation characteristics of the fields. Validity of the method was experimentally demonstrated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Magnetoquasistatic field / Current loop / Magnetic moment / NFC / Communication area |
| Paper # | SRW2013-13 |
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| Conference Information | |
| Committee | SRW |
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| Conference Date | 2013/6/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Short Range Wireless Communications(SRW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Shaping Magnetic-Field Patterns with Multiple Current Loops : Toward Short-Range Wireless Identification |
| Sub Title (in English) | |
| Keyword(1) | Magnetoquasistatic field |
| Keyword(2) | Current loop |
| Keyword(3) | Magnetic moment |
| Keyword(4) | NFC |
| Keyword(5) | Communication area |
| 1st Author's Name | Ai-ichiro SASAKI |
| 1st Author's Affiliation | NTT Microsystem Integration Laboratories() |
| 2nd Author's Name | Takayuki OGASAWARA |
| 2nd Author's Affiliation | NTT Microsystem Integration Laboratories |
| 3rd Author's Name | Koji FUJII |
| 3rd Author's Affiliation | NTT Microsystem Integration Laboratories |
| 4th Author's Name | Hiroki MORIMURA |
| 4th Author's Affiliation | NTT Microsystem Integration Laboratories |
| 5th Author's Name | Osamu KAGAMI |
| 5th Author's Affiliation | NTT Microsystem Integration Laboratories |
| Date | 2013-06-17 |
| Paper # | SRW2013-13 |
| Volume (vol) | vol.113 |
| Number (no) | 85 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |