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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >A novel low-profile planar microstrip transmitarray antenna with high efficiency
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A novel low-profile planar microstrip transmitarray antenna with high efficiency

机译：具有高效率的新型低调平面微带传输天线

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摘要

This article presents a novel low-profile planar microstrip transmitarray antenna with high efficiency. First, a double-layer planar microstrip transmitarray element is designed. The element consists of only one single substrate layer and two metallic layers, and two same modified Jerusalem cross-shaped patches are etched on two sides of the substrate. These two patch layers are also connected by four specially designed metallic vias. The transmitarray element achieves more than 360° transmission phases with more than −3-dB transmission amplitudes. Then, a low-profile X-band 145-element circularaperture microstrip transmitarray antenna with the standard pyramidal horn feed is designed, fabricated and measured. The thickness of the microstrip transmitarray is 0.14λ_0, where λ_0 is the wavelength corresponding to the center frequency 10.6 GHz. Measured results indicate that gain of the transmitarray antenna at the center frequency 10.6 GHz is 25.4 dBi, its radiation efficiency is 53.8%, and its 1-dB gain bandwidth is 7.8%.
机译：本文提出了一种具有高效率的新型低调平面微带传输天线。首先，设计了双层平面微带传输元件。该元件仅由一个单个基板层和两个金属层组成，并且在基板的两侧蚀刻了两个相同的修饰的锯形交叉形贴片。这两个贴片层也通过四个专门设计的金属通孔连接。传输阵列元件具有超过360°的传输相，具有超过-3dB的传输幅度。然后，设计，制造和测量具有标准金字塔喇叭饲料的低型材X频段145元件环形光束微带传输阵列天线。微带传输阵列的厚度为0.14λ_0，其中λ_0是对应于中心频率10.6GHz的波长。测量结果表明，中心频率10.6GHz处的传输阵列天线的增益为25.4dBI，其辐射效率为53.8％，其1-dB增益带宽为7.8％。

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