| Presentation | 2008-01-25 An evaluation of the measurement method for Fully Anechoic Room Hiroyoshi TAGI, Yoshiyuki SAITO, Yukihiro FUKUMOTO, Takuya NAKAMORI, Masataka INOUE, Katsuo ISHIHARA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | According to the current standards of EMC, the radiated emission level is measured as the electric field strength of synthesized-vector-wave. The wave is composed of the direct wave from equipment under test (EUT) and the reflected wave from the floor. On the other hand, it is being discussed to use a fully anechoic room (FAR) in a new EMC standard: CISPR 32. In a FAR, the variation of the height pattern occurs little because there is no reflected wave from the floor. Therefore, the measurement time can be reduced drastically, since the height of the antenna does not need to be changed. However, there is a concern that an accurate peak value cannot be obtained at the fixed-height antenna, since an EUT may have an directional characteristics. In this report, we evaluated the relation between the height of the antenna and the measurement result by using a comb generator and some digital consumer electronics equipments. As a result, we verified that there was no problem in this evaluation method even if the height of the antenna is fixed. Additionally, it was shown that we could shorten the measurement time to about one sixth of the conventional method, by fixed-height antenna in the FAR. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Anechoic room / FAR / OATS / SAC / EMI / CISPR |
| Paper # | EMCJ2007-111 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2008/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | An evaluation of the measurement method for Fully Anechoic Room |
| Sub Title (in English) | |
| Keyword(1) | Anechoic room |
| Keyword(2) | FAR |
| Keyword(3) | OATS |
| Keyword(4) | SAC |
| Keyword(5) | EMI |
| Keyword(6) | CISPR |
| 1st Author's Name | Hiroyoshi TAGI |
| 1st Author's Affiliation | System Engineering Center, Matsushita Electric Industrial Co., Ltd() |
| 2nd Author's Name | Yoshiyuki SAITO |
| 2nd Author's Affiliation | System Engineering Center, Matsushita Electric Industrial Co., Ltd |
| 3rd Author's Name | Yukihiro FUKUMOTO |
| 3rd Author's Affiliation | System Engineering Center, Matsushita Electric Industrial Co., Ltd |
| 4th Author's Name | Takuya NAKAMORI |
| 4th Author's Affiliation | Corporate Manufacturing Innovation Division, MEI |
| 5th Author's Name | Masataka INOUE |
| 5th Author's Affiliation | Corporate Manufacturing Innovation Division, MEI |
| 6th Author's Name | Katsuo ISHIHARA |
| 6th Author's Affiliation | Corporate Manufacturing Innovation Division, MEI |
| Date | 2008-01-25 |
| Paper # | EMCJ2007-111 |
| Volume (vol) | vol.107 |
| Number (no) | 456 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |