| Presentation | 2005/2/25 Long Range Passive RFID-Tag for Multipoint Temperature Indication System Hitoshi KITAYOSHI, Kunio SAWAYA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A novel long range passive RFID tag with 30 m reading distance under ARIB standards is proposed. The proposed tag is composed of a divided microstrip antenna and a passive voltage multiplying circuit. The received level at the reader for the case of the proposed tag is about 10 dB greater than that for the case of the dipole antenna of the conventional tag. Since the antenna is a microstrip type antenna having a ground plane, it can be used in the vicinity of a metal structure. The proposed rectifying circuit is composed of a tank circuit of a λ/4 short stub and modified 3-stage Cockcroft-Walton circuit and can convert from -20 dBm (Zo=50Ω) RF input of 950 MHz or 2.45 GHz to more than 0.6 V DC voltages at load current 2 μA for the transponding operation. The size of fabricated tags for 950 MHz band is 90×60×4 mm and that for 2.45 GHz band is 70×25×4 mm. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Passive RFID / Temperature sensor / Long range communication / Microstrip antenna / Multiplying rectifier |
| Paper # | WBS2004-152,A・P2004-333,RCS2004-420,MoMuC2004-203,MW2004-330 |
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| Conference Information | |
| Committee | MoMuC |
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| Conference Date | 2005/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Assistant | |
| Paper Information | |
| Registration To | Mobile Multimedia Communications(MoMuC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Long Range Passive RFID-Tag for Multipoint Temperature Indication System |
| Sub Title (in English) | |
| Keyword(1) | Passive RFID |
| Keyword(2) | Temperature sensor |
| Keyword(3) | Long range communication |
| Keyword(4) | Microstrip antenna |
| Keyword(5) | Multiplying rectifier |
| 1st Author's Name | Hitoshi KITAYOSHI |
| 1st Author's Affiliation | Intelligent Cluster in Sendai Area() |
| 2nd Author's Name | Kunio SAWAYA |
| 2nd Author's Affiliation | Faculty of Engineering, Tohoku University |
| Date | 2005/2/25 |
| Paper # | WBS2004-152,A・P2004-333,RCS2004-420,MoMuC2004-203,MW2004-330 |
| Volume (vol) | vol.104 |
| Number (no) | 683 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |