| Budget Amount *help |
¥26,650,000 (Direct Cost: ¥20,500,000、Indirect Cost: ¥6,150,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2010: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2009: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
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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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