| Presentation | 2004/7/16 Reduction of amplitude deviation in the circumferential direction in a radial waveguide with a crossed dogbone slot Toru OIZUMI, Kaoru SUDO, Jiro HIROKAWA, Makoto ANDO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A rectangular-to-radial waveguide transformer with a crossed dogbone slot is analyzed by using the method of moments with numerical eigenmode basis functions. The basis functions of the magnetic current in the crossed dogbone slot are chosen to be the eigenmodes for its crossed section derived by the edge-based finite element method. The reactions in the parallel plates are calculated by use of a free space with image sources of the magnetic currents. A transformer is designed at 5.8 GHz. The calculated and measured amplitude deviations in the circumferential direction are 0.76 dB and 1.7 dB, respectively. The amplitude deviations of the crossed dogbone slot are lower than that of the crossed slot by 1.5 dB and 1.3 dB, respectively. The calculated reflection of the transformer is -25.4 dB. The measuring method of the inner field in a radial waveguide is proposed. A full model structure of a concentric array radial line slot antenna with a feeder has been analyzed by using the method of moment. The measured amplitude deviation accord with the calculated one on the outermost round of slot pairs by the full wave analysis. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | radial line slot antenna / feed circuit / crossed slot / crossed dogbone slot / inner field measurement |
| Paper # | A・P2004-116 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2004/7/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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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) | Reduction of amplitude deviation in the circumferential direction in a radial waveguide with a crossed dogbone slot |
| Sub Title (in English) | |
| Keyword(1) | radial line slot antenna |
| Keyword(2) | feed circuit |
| Keyword(3) | crossed slot |
| Keyword(4) | crossed dogbone slot |
| Keyword(5) | inner field measurement |
| 1st Author's Name | Toru OIZUMI |
| 1st Author's Affiliation | Department of Electrical and Electronic Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Kaoru SUDO |
| 2nd Author's Affiliation | Department of Electrical and Electronic Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Jiro HIROKAWA |
| 3rd Author's Affiliation | Department of Electrical and Electronic Engineering, Tokyo Institute of Technology |
| 4th Author's Name | Makoto ANDO |
| 4th Author's Affiliation | Department of Electrical and Electronic Engineering, Tokyo Institute of Technology |
| Date | 2004/7/16 |
| Paper # | A・P2004-116 |
| Volume (vol) | vol.104 |
| Number (no) | 203 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |