| Presentation | 2004/10/21 An Experimental Study on Measurable Frequency Range of Antenna Efficiency Measurement Using the waveguide Takayuki KANEKO, Nozomu ISHII, Michio MIYAKAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In measuring the radiation efficiency of the monopole using the improved Wheeler method, some dips of the measured efficiency are observed at discrete frequencies. In this report, the dips can be removed by limiting the moving range of sliding shorts in the waveguide so that a continous measurement of the efficiency can be achieved for the wide frequency range, which is the same as the recommanded frequency range of the waveguide. If both sliding shorts at the ends of the waveguide are possible to be moved, the dips occur at the resonant frequencies of the cavity which is formed by the wavegude and two shorts. The moving range of the sliding shorts is discussed to remove the dips from the efficiency. And, if one of the sliding shorts is fixed and the other is possible to be moved, the dips of the efficiency occur at the frequency of the resonance between the monopole and the fixed short and can be removed by locating the fixed short in the limited range. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | radiation efficiency / improved Wheeler method / waveguide / sliding short / resonance of cavity |
| Paper # | A・P2004-138,RCS2004-159 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2004/10/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Experimental Study on Measurable Frequency Range of Antenna Efficiency Measurement Using the waveguide |
| Sub Title (in English) | |
| Keyword(1) | radiation efficiency |
| Keyword(2) | improved Wheeler method |
| Keyword(3) | waveguide |
| Keyword(4) | sliding short |
| Keyword(5) | resonance of cavity |
| 1st Author's Name | Takayuki KANEKO |
| 1st Author's Affiliation | Graduate School of Science and Technology, Niigata University() |
| 2nd Author's Name | Nozomu ISHII |
| 2nd Author's Affiliation | Faculty of Engineering, Niigata University |
| 3rd Author's Name | Michio MIYAKAWA |
| 3rd Author's Affiliation | Faculty of Engineering, Niigata University |
| Date | 2004/10/21 |
| Paper # | A・P2004-138,RCS2004-159 |
| Volume (vol) | vol.104 |
| Number (no) | 398 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |