| Presentation | 1997/9/26 Evaluation of Applicability for Semi-anechoic Chamber as Test Site above 1GHz Yoshinobu HAYASHI, Takashi SHINOZUKA, Yasuo HASHIMOTO, Risaburo SATO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Requirements of test site for EMI measurement above 1GHz are now under consideration. Only free-space condition comes to an agreement. The users of semi-anechoic chambers currently used below 1GHz take a notice to an applicability to use them above 1GHz. We mearsured the characteristics of a semi-anechoic chamber, and then investigated the requirements to realize a free-space condition by covering the electromagnetic absorbers on the floor. It was found that when interference measurement is performed for a frequency range from 1 to 3GHz and a distance between transmitiong and receiving antennas of 3m, while electromagnetic absorbers for widths greater than the first Fresnel zone are installed on the floor of the current semi-anechoic chamber, free-space conditions are satisfied within a precision level of 2db for horizontal polarized waves and 2.5dB for vertical polarized waves. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Measuring test site / Semi-anechoic chamber / Free-space condition / Height pattern / Site attenuation above 1GHz / Electromagnetic absorbers |
| Paper # | EMCJ97-49 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 1997/9/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Assistant | |
| 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) | Evaluation of Applicability for Semi-anechoic Chamber as Test Site above 1GHz |
| Sub Title (in English) | |
| Keyword(1) | Measuring test site |
| Keyword(2) | Semi-anechoic chamber |
| Keyword(3) | Free-space condition |
| Keyword(4) | Height pattern |
| Keyword(5) | Site attenuation above 1GHz |
| Keyword(6) | Electromagnetic absorbers |
| 1st Author's Name | Yoshinobu HAYASHI |
| 1st Author's Affiliation | Electromagnetic Compatibility Research Laboratories Co.,Ltd.() |
| 2nd Author's Name | Takashi SHINOZUKA |
| 2nd Author's Affiliation | Electromagnetic Compatibility Research Laboratories Co.,Ltd. |
| 3rd Author's Name | Yasuo HASHIMOTO |
| 3rd Author's Affiliation | Electromagnetic Compatibility Research Laboratories Co.,Ltd. |
| 4th Author's Name | Risaburo SATO |
| 4th Author's Affiliation | Electromagnetic Compatibility Research Laboratories Co.,Ltd. |
| Date | 1997/9/26 |
| Paper # | EMCJ97-49 |
| Volume (vol) | vol.97 |
| Number (no) | 286 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |