基于超表面的顺序相位馈电圆极化贴片阵列天线

2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT) Pub Date : 2017-03-01 DOI:10.1109/IWAT.2017.7915287

S. Ta, I. Park

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引用次数: 6

摘要

本文介绍了一种采用顺序旋转串并联馈电的低轮廓宽带2×2超表面圆极化(CP)阵列天线。单个元件是一个截断的角方形块，夹在地平面和4×4金属板晶格的超表面之间。这些天线与馈电网络相结合，实现宽带运行。该2×2超表面阵列天线总体尺寸为64 mm × 64 mm × 2.34 mm (5.5 GHz时为1.17λ0 × 1.17λ0 × 0.043λ0)，其S11| <−10 dB带宽为4.56 ~ 6.98 GHz (41.94%)， 3 dB轴比带宽为4.67 ~ 6.39 GHz(31.1%)。该阵列天线产生宽边左CP辐射，峰值增益为11.6 dBic, 3db增益带宽为4.67 ~ 6.36 GHz(30.6%)，辐射效率> 88%。

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Metasurface-based circularly polarized patch array antenna using sequential phase feed

This paper describes a low-profile broadband 2×2 metasurface-based circularly polarized (CP) array antenna using a sequentially rotated series-parallel feed. The single element is a truncated corner square patch sandwiched between the ground plane and the metasurface of a lattice of 4×4 metal plates. These antennas are incorporated with the feeding network to achieve broadband operation. The 2×2 metasurface-based array antenna with an overall size of 64 mm × 64 mm × 2.34 mm (∼1.17λ0 × 1.17λ0 × 0.043λ0 at 5.5 GHz) has a |S11| < −10 dB bandwidth of 4.56–6.98 GHz (41.94%) and 3-dB axial ratio bandwidth of 4.67–6.39 GHz (31.1%). The array antenna yields a broadside left-hand CP radiation with a peak gain of 11.6 dBic, a 3-dB gain bandwidth of 4.67–6.36 GHz (30.6%), and a radiation efficiency of > 88%.

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来源期刊

2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)

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