| Presentation | 2001/1/18 Suppression Effect of Electric Far-field Level from Transmission Line attached to a Ferrite Core Tetsuya MAEKAWA, Osamu FUJIWARA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Magnetic materials are often used as a means to reduce the electromagnetic (EM) noise on the source side and also improve the immunity against the EM noise on the device side. Effects on the suppression of the EM noise from print circuit board (PCB) traces and cables are being investigated. In this paper, we first derived a formula for calculating the far-field level radiated from a ferrite-core-attached transmission-line above a ground plane, and then numerically investigated the effect of the ferrite core attachment on the suppression of the radiated far-field. As a result, we found that the radiated field level is proportional to the spatial average value of the current distribution along the line, and its suppression directly contributes to the reduction of radiated field level. Moreover, we also found that the attachment of a ferrite core to the near-end of the line results in a suppression of the radiated field, while the attachment of ferrite core to the far-end of the line results in an increase of the radiated field. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Transmission line / ferrite core / Electric far-field / suppression effect |
| Paper # | EMCJ 2000-127 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2001/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Chair | |
| Vice Chair | |
| Secretary | |
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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) | Suppression Effect of Electric Far-field Level from Transmission Line attached to a Ferrite Core |
| Sub Title (in English) | |
| Keyword(1) | Transmission line |
| Keyword(2) | ferrite core |
| Keyword(3) | Electric far-field |
| Keyword(4) | suppression effect |
| 1st Author's Name | Tetsuya MAEKAWA |
| 1st Author's Affiliation | Faculty of Engineering, Nagoya Institute of Technology() |
| 2nd Author's Name | Osamu FUJIWARA |
| 2nd Author's Affiliation | Faculty of Engineering, Nagoya Institute of Technology |
| Date | 2001/1/18 |
| Paper # | EMCJ 2000-127 |
| Volume (vol) | vol.100 |
| Number (no) | 577 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |