| Presentation | 2016-04-21 Efficiency Enhancement of Beam-switching Antenna Optimizing Beam Shape of Taper Structure in Rotman-lens Phase Shifter Yuta Suzuki, Yasuhiro Imade, Kunio Sakakibara, Nobuyoshi Kikuma, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Multiple-beam antennas can cover wide angle with high gain, therefore, are attractive for high-speed wireless mobile communications and automotive radar systems in the millimeter-wave band. Rotman-lens phase shifter is a feeding circuit for array antennas and different beam-directions can be achieved by different phase inclination to the output ports assigned to each input port. Butler matrix and Blass circuit have similar functions, however, Rotman-lens operates broad frequency band width due to the lens principle. On the other hand, Rotman-lens suffers loss consumed into the dummy ports and reduction of aperture efficiency due to deviation from the uniform output illumination. In this work, angle and width at the connection of all input taper structures to the Rotman lens are adjusted to fit the radiation pattern in the parallel plate transmission line to the whole width of output ports. The effect of this structure is confirmed by simulation in this paper. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Rotman-lens / beam-switching / feeding circuit / microstrip antenna / millimeter wave |
| Paper # | AP2016-4 |
| Date of Issue | 2016-04-14 (AP) |
| Conference Information | |
| Committee | AP |
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| Conference Date | 2016/4/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chub university |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Chair | Keizo Cho(Chiba Inst. of Tech.) |
| Vice Chair | Hisato Iwai(Doshisha Univ.) |
| Secretary | Hisato Iwai(KDDI R&D Labs.) |
| Assistant | Yuichi Kimura(Saitama Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Efficiency Enhancement of Beam-switching Antenna Optimizing Beam Shape of Taper Structure in Rotman-lens Phase Shifter |
| Sub Title (in English) | |
| Keyword(1) | Rotman-lens |
| Keyword(2) | beam-switching |
| Keyword(3) | feeding circuit |
| Keyword(4) | microstrip antenna |
| Keyword(5) | millimeter wave |
| 1st Author's Name | Yuta Suzuki |
| 1st Author's Affiliation | Nagoya Institute of Technology(NITech.) |
| 2nd Author's Name | Yasuhiro Imade |
| 2nd Author's Affiliation | Nagoya Institute of Technology(NITech.) |
| 3rd Author's Name | Kunio Sakakibara |
| 3rd Author's Affiliation | Nagoya Institute of Technology(NITech.) |
| 4th Author's Name | Nobuyoshi Kikuma |
| 4th Author's Affiliation | Nagoya Institute of Technology(NITech.) |
| Date | 2016-04-21 |
| Paper # | AP2016-4 |
| Volume (vol) | vol.116 |
| Number (no) | AP-7 |
| Page | pp.pp.19-24(AP), |
| #Pages | 6 |
| Date of Issue | 2016-04-14 (AP) |