| Presentation | 1997/8/22 Prerequisites for free space propagation and its necessary approach : Verification of universal EMC test site and Shigekazu SHIBUYA, Haruo ISHIZUKA, Akinori KAMESHIMA, Toshio KINOSHITA, Hideya ANDO, Kazuaki YOSHIMURA, Takashi SUZUKI, Juiti KAKU, Koujirou UNNO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Stars several light-years apart can be observed since the lights of stars reach the earth through the free-space propagation which undergoes no absorption, refraction and dispersion at all. The radio communication currently used but most analogous to the free-space propagation is found in communication between satellites and between satellite and earth, showing a good quality and stable communication performances. Realization of the free-space propagation over terrestrial communication requires restriction of the influences of reflection and diffraction by thc earth ground surface and effects of atmospheric refraction within appropriate limits. Extensive adoption of Japanese microwave relay system into various countries in the world owes to successful provision of high-quality relay system by means of "free-space propagation". Studies have accumulated so far on to a realization of the free-space type EMC test site based on past experience. As a result, the Universal Utility Test Site (UUTS or U Site in short) which is applicable to broad frequency band i.e., 30MHz～400GHz covering VHF, UHF, SHF and EHF, and applicable to the test distances, 0.5m and 10m or longer has been developed successfully. This paper deals with the required conditions for free-space propagation, method to realize the free-space condition, examples of the U-site. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | free-space conditions / effective reflection coefficient / anti-reflection / EMC / UUTS / U-site |
| Paper # | A・P97-87 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 1997/8/22(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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| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Prerequisites for free space propagation and its necessary approach : Verification of universal EMC test site and |
| Sub Title (in English) | |
| Keyword(1) | free-space conditions |
| Keyword(2) | effective reflection coefficient |
| Keyword(3) | anti-reflection |
| Keyword(4) | EMC |
| Keyword(5) | UUTS |
| Keyword(6) | U-site |
| 1st Author's Name | Shigekazu SHIBUYA |
| 1st Author's Affiliation | System Consultant SHIBUYA's Office() |
| 2nd Author's Name | Haruo ISHIZUKA |
| 2nd Author's Affiliation | ISHIZUKA Radio Engineering Consultant Office |
| 3rd Author's Name | Akinori KAMESHIMA |
| 3rd Author's Affiliation | KAMESHIMA Consultant Office |
| 4th Author's Name | Toshio KINOSHITA |
| 4th Author's Affiliation | EMCT Study Group |
| 5th Author's Name | Hideya ANDO |
| 5th Author's Affiliation | Touin Gakuen Yokohama University |
| 6th Author's Name | Kazuaki YOSHIMURA |
| 6th Author's Affiliation | Touin Gakuen Yokohama University |
| 7th Author's Name | Takashi SUZUKI |
| 7th Author's Affiliation | Net Alpha Co., Ltd. |
| 8th Author's Name | Juiti KAKU |
| 8th Author's Affiliation | Colory Co., Ltd. |
| 9th Author's Name | Koujirou UNNO |
| 9th Author's Affiliation | Colory Co., Ltd. |
| Date | 1997/8/22 |
| Paper # | A・P97-87 |
| Volume (vol) | vol.97 |
| Number (no) | 228 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |