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Antenna device

阅读:923发布:2021-01-25

专利汇可以提供Antenna device专利检索,专利查询,专利分析的服务。并且PURPOSE:To enable to obtain sharp directivity to use device effectively at the frequency over UHF by making a rectangular loop type antenna conductor V-type on the same surface and making one corner of V-type a feeding point. CONSTITUTION:Rectangular loop type antenna conductor 1 where stated impedance elements 2, 3 and 4 are mounted on the center portion of sides 1a, 1c and 1d is bent to be V-type at the center portion of long sides 1a and 1b of it. In this case, angle alpha of the bent portion of long sides 1a and 1b is about 90 deg., angles beta of short sides 1c and 1d and long side 1b are about 45 deg. respectively and angles nu of short sides 1c and 1d and long side 1a is about 135 deg. respectively. Short side 2B and long side 2A are stated as constant (0.015lambda) and 1.5lambda respectively and feeding point 8 is set on the center portion of long side 1b, namely the corner of V-type. In case of receiving waves of 487 MHz from the antenna device mentioned above, extermely sharp directivity can be obtained.,下面是Antenna device专利的具体信息内容。

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