| Presentation | 2002/1/18 An Analysis Based on the Numerical Eigenmodes and Radiation Mechanism of a Circularly Polarized Wave for a Notched Annular Ring Slot on a Shorting Plate of a Waveguide Takuichi HIRANO, 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 notched annular ring slot on the shorting plate of a waveguide is analyzed and designed. In the analysis, eigenmode functions for a waveguide with the cross section of the slot, which are derived numerically by the edge-based finite element method, are utilized as basis functions in the method of moments. A notched annular ring slot is designed at 3.96GHz. The axial ratio is 0.98dB at the boresight. Frequency characteristics of the reflection coefficient and the axial ratio, and the radiation pattern are compared with the measured ones and good results are obtained. The reflection is suppressed below -15dB over a 14.2% bandwidth and the axial ratio is suppressed below 3dB over a 3.O% bandwidth. Circularly polarized wave radiation is interpreted in terms of eigenmodes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Notched annular ring slot antenna / Method of Moments / Finite element method / Eigenmode function / Circularly polarized wave |
| Paper # | 2001-PS-97,2001-OFT-94,2001-OPE-138,2001-LQE-124 |
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| Conference Information | |
| Committee | OFT |
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| Conference Date | 2002/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optical Fiber Technology (OFT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Analysis Based on the Numerical Eigenmodes and Radiation Mechanism of a Circularly Polarized Wave for a Notched Annular Ring Slot on a Shorting Plate of a Waveguide |
| Sub Title (in English) | |
| Keyword(1) | Notched annular ring slot antenna |
| Keyword(2) | Method of Moments |
| Keyword(3) | Finite element method |
| Keyword(4) | Eigenmode function |
| Keyword(5) | Circularly polarized wave |
| 1st Author's Name | Takuichi HIRANO |
| 1st Author's Affiliation | Dept. of Electric & Electronic Eng., Tokyo Institute of Technology() |
| 2nd Author's Name | Jiro HIROKAWA |
| 2nd Author's Affiliation | Dept. of Electric & Electronic Eng., Tokyo Institute of Technology |
| 3rd Author's Name | Makoto Ando |
| 3rd Author's Affiliation | Dept. of Electric & Electronic Eng., Tokyo Institute of Technology |
| Date | 2002/1/18 |
| Paper # | 2001-PS-97,2001-OFT-94,2001-OPE-138,2001-LQE-124 |
| Volume (vol) | vol.101 |
| Number (no) | 587 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |