| Paper Abstract and Keywords |
| Presentation |
2005-09-08 13:35
Under consideration
Nobuo Kuwabara (Kyushu Institute of Technology), Masato Kawabata, Yasuhiro Ishida (Fukuoka Industilial Technology Center) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Disturbance from Information Technology Equipment (ITE) is evaluated at the distance of 10 m by the specification of the international publication. The measurement is also carried out at the distance of 3 m. The limit of disturbances are specified for each measurement distance, and the deviation between the limits at 3 m and 10 m is 10 dB. This gives the illusion that the deviation of the measured disturbance using the specification is in proportion to the distance. However, investigation results indicate that the measured disturbance is not in proportion to the distance ratio. In this report, we calculated site attenuations or electric field strength in the frequency range of 30-1000 MHz using the method of moment at the distance of 3 m and 10 m when the radiation source was a dipole antenna, a small loop antenna, and the imitating equipment. Based on the calculation results, the distance dependences were investigated, and the results suggested that the deviation of trace length between the direct wave and the refection wave and the directivity of radiated electromagnetic field from EUT were mainly influenced to prevent the proportion of the measured disturbances deviation and the distance ratio, and we could not settle the problem as long as we used the measurement method. This report also present that the method which can estimate the disturbance level at 10 m distance from the measured results at 3 m distance. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Information Technology Equipment / Electric field strength / Disturbance / Measurement distance / Test site / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 105, no. 263, EMCJ2005-59, pp. 1-6, Sept. 2005. |
| Paper # |
EMCJ2005-59 |
| Date of Issue |
2005-09-01 (EMCJ) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
EMCJ |
| Conference Date |
2005-09-08 - 2005-09-09 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kyoto University |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
EMCJ |
| Conference Code |
2005-09-EMCJ |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Under consideration |
| Sub Title (in English) |
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| Keyword(1) |
Information Technology Equipment |
| Keyword(2) |
Electric field strength |
| Keyword(3) |
Disturbance |
| Keyword(4) |
Measurement distance |
| Keyword(5) |
Test site |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Nobuo Kuwabara |
| 1st Author's Affiliation |
Kyushu Institute of Technology (Kyushu Institute of Technology) |
| 2nd Author's Name |
Masato Kawabata |
| 2nd Author's Affiliation |
Fukuoka Industilial Technology Center (Fukuoka Industilial Technology Center) |
| 3rd Author's Name |
Yasuhiro Ishida |
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Fukuoka Industilial Technology Center (Fukuoka Industilial Technology Center) |
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| Speaker |
Author-1 |
| Date Time |
2005-09-08 13:35:00 |
| Presentation Time |
35 minutes |
| Registration for |
EMCJ |
| Paper # |
EMCJ2005-59 |
| Volume (vol) |
vol.105 |
| Number (no) |
no.263 |
| Page |
pp.1-6 |
| #Pages |
6 |
| Date of Issue |
2005-09-01 (EMCJ) |
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