A low-profile wide-scanning fully metallic lens antenna for 5G communication
A low-profile wide-scanning fully metallic lens antenna for 5G communication
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DOI：
10.1002/mmce.22584
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发表时间：
2021-02-17
影响因子：
1.7
通讯作者：
Hu, Jun
中科院分区：
文献类型：
--
作者：
Liu, Kunning;Yang, Shiwen;Hu, Jun
本文介绍了一种工作在5G毫米波（mm-wave）频率（24-29 GHz）的低轮廓宽扫描透镜天线。基于平行板波导的原理，所提出的透镜由两个几乎平行的板组成，它们的内表面只有一个槽或脊。由于透镜内充满空气，可以避免介质透镜在毫米波频率下的高损耗。22个单极天线被用来馈送透镜，提供超过+/- 77度波束扫描覆盖-3 dB交叉水平在方位面。在26.5 GHz中频处，测得的3db波束宽度在方位面和仰角面分别为7度和69度。在26.5 GHz时，中波束的孔径效率为66%，在工作频段内为40% ~ 69.4%。结果表明，该镜头具有广角扫描、重量轻、成本低、易于制造等优点，是5G无线通信的有效解决方案。
A low-profile wide-scanning lens antenna operating at 5G millimeter-wave (mm-wave) frequencies (24-29 GHz) is presented in this article. Based on the principles of parallel plate waveguide, the proposed lens consists of two almost-parallel plates which have only one slot or ridge in their inner surfaces. Due to that the lens is filled with air, the prominent high loss of dielectric lens at mm-wave frequencies can be avoided. The 22 monopole antennas are employed to feed the lens, providing over +/- 77 degrees beam scanning coverage of -3 dB cross-over level in the azimuth plane. Measured 3 dB beamwidths are 7 degrees/69 degrees in the azimuth/elevation plane at the middle frequency of 26.5 GHz, respectively. Measured aperture efficiency for the middle beam is 66% at 26.5 GHz, and varies between 40% and 69.4% over the operating frequency band. The results indicate that the proposed lens is an effective solution for the 5G wireless communications due to its wide-angle scanning, lightweight, low cost, and easy fabrication.