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Dual-band circularly polarised antenna with hemispherical coverage
Dual-band circularly polarised antenna with hemispherical coverage
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机译:半球覆盖双频圆极化天线
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摘要
A circularly polarised antenna including first and second multiple patch antenna structures dimensioned to operate at two distinct frequencies, each antenna structure consisting of four shorted patches, the patches (11a) of the first structure being spaced from a ground plane (10) by dielectric material (12), the patches (14a) of the second structure being spaced from the patches of the first structure by dielectric material (13), the patches of the second structure each overlying a corresponding patch of the first structure and each having a dimension λm(2)/4 which is less than the dimension λm(1)/4 of the corresponding patch of the first structure, with feed means (16a, 17a) for each of the patches, the patches of both structures being disposed in the planes of the patches so that the radiating edges of the two patch structures form superimposed antenna structures.
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机译:圆极化天线,包括第一和第二多个贴片天线结构,其尺寸设计为可在两个不同的频率下工作,每个天线结构由四个短路贴片组成,第一结构的贴片(11a)通过介电材料与接地层(10)隔开(12),第二结构的贴片(14a)通过介电材料(13)与第一结构的贴片间隔开,第二结构的贴片各自覆盖在第一结构的相应贴片上,并且每个具有尺寸λ m Sub> (2) Sup> / 4,它小于相应尺寸的λ m Sub> (1) Sup> / 4该第一结构的贴片具有用于每个贴片的馈送装置(16a,17a),两个结构的贴片均设置在贴片的平面中,从而两个贴片结构的辐射边缘形成叠加的天线结构。
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