| Presentation | 2009-01-23 Depend on Cable configuration for Radiated Electromagnetic Field from Multi-Pair Cable by Using Method of Moment Naoki KOJIMA, Masato KAWABATA, Nobuo Kuwabara, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The radiated electromagnetic field from an UTP cable might become a problem of EMC because of an increase in the signal speed propagating on an UTP cable. Therefore, the radiated electromagnetic field has been analyzed to reduce the field strength. As one of the analysis methods, the method of moment is effective to analyze it, and the calculation model of a single twisted pair has been reported. However, the model for multi-pair has not yet been cleared. In this report, the capacitance between wires, and the wire models were assembled to construct the UTP cable. The twisted pitch of each pair was determined from the measurement by the actual cable. The radiated electromagnetic field from UTP cable constructed with four pairs was measured from 0.3GHz to 3GHz, and Hybrid couplers were used to generate the differential mode signal. The investigation results show that the characteristic impedance and the phase constant of each pair were not influenced by the assembly, the calculation results were almost agree with the measured one, and the difference of the twisting pitch did not pay the significant influence to the radiated electromagnetic field. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | UTP cable / Radiated electromagnetic field / Hybrid coupler / Wire grid model |
| Paper # | EMCJ2008-105 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2009/1/16(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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| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Depend on Cable configuration for Radiated Electromagnetic Field from Multi-Pair Cable by Using Method of Moment |
| Sub Title (in English) | |
| Keyword(1) | UTP cable |
| Keyword(2) | Radiated electromagnetic field |
| Keyword(3) | Hybrid coupler |
| Keyword(4) | Wire grid model |
| 1st Author's Name | Naoki KOJIMA |
| 1st Author's Affiliation | Kyushu Institute of Technology() |
| 2nd Author's Name | Masato KAWABATA |
| 2nd Author's Affiliation | Fukuoka Industrial Technology Center |
| 3rd Author's Name | Nobuo Kuwabara |
| 3rd Author's Affiliation | Kyushu Institute of Technology |
| Date | 2009-01-23 |
| Paper # | EMCJ2008-105 |
| Volume (vol) | vol.108 |
| Number (no) | 401 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |