2012 Fiscal Year Final Research Report
A study of Antenna technologies which can be solutions to improve communication failure of mobile wireless communication devices
| Project/Area Number |
21686035
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Communication/Network engineering
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| Research Institution | Ehime University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2012
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| Keywords | 移動通信 / 小型アンテナ / マイクロ波・ミリ波 / 高速大容量無線通信 / ユビキタス |
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| Research Abstract |
An antenna that can enhance the communication characteristics of mobile wireless devices has been developed. The antenna has achieved the targets that it can be used at multi-polarization in multi-frequencies, its return loss characteristic is 10 dB or more, its half power beam width is 100 degrees or more, its radiation gain is 1 dB or more, its axial ratio is 3 dB or less, its size is ・/10 or less, it can be fed by coaxial cables directly without any baluns and impedancematching circuits, it is not affected by metal plates locating closely. Those characteristics have been verified by testing the prototype antennas in practice.
(2)10dB 以上のリターンロス
4)放射利得 1dB 以上
(6)アンテナサイズλ/10 以下
(8)近接金属による性能劣化低減、などを達成した。試作・実験により、これらの性能が理論通り達成されていることも確認した。
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