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用于5G行业的具有高旁瓣抑制功能的锥形高增益法布里-珀罗腔天线。

Tapered high-gain Fabry-Perot cavity antenna with high sidelobe suppression for 5G industry.

作者信息

Hussain Muhammad, Lee Kyung-Geun, Kim Dongho

机构信息

Network Research Lab (NRL), Department of Information and Communication Engineering, Sejong University, Seoul, 05006, Republic of Korea.

Antenna and RF Applications Lab (ARFAL), Department of Electrical Engineering, Sejong University, Seoul, 05006, Republic of Korea.

出版信息

Sci Rep. 2023 Sep 21;13(1):15744. doi: 10.1038/s41598-023-42716-8.

DOI:10.1038/s41598-023-42716-8
PMID:37735484
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10514039/
Abstract

We propose a Fabry-Perot cavity (FPC) antenna to suppress a sidelobe level (SLL) while maintaining a reasonably high gain. Generally, conventional FPC antennas (FPCAs) produce a high SLL because waves in their FPC leak considerably through lateral openings, which is a primary reason for lowering antenna gains. We propose two design approaches to solve this problem: the reflection magnitude tapering of a partially reflective surface (PRS) and considering different incident modes for the PRS design. First, the proposed tapering can remarkably reduce an SLL by providing the PRS with more radiation opportunities. Second, the different incident modes of transverse electric (TE) and transverse magnetic (TM) can increase an antenna gain by considering a more realistic illumination environment of the PRS. We have proven that our antenna provides 19.8 dBi realized gain with high sidelobe suppression (SLS) of more than 23 dB. Consequently, the proposed FPCA can suppress sidelobes significantly while maintaining a high gain. Good agreement between simulations and experiments demonstrates the usefulness of our proposal.

摘要

我们提出一种法布里-珀罗腔（FPC）天线，以在保持合理高增益的同时抑制旁瓣电平（SLL）。一般来说，传统的FPC天线（FPCA）会产生较高的SLL，因为其FPC中的波会通过侧向开口大量泄漏，这是降低天线增益的主要原因。我们提出了两种设计方法来解决这个问题：部分反射表面（PRS）的反射幅度渐变以及在PRS设计中考虑不同的入射模式。首先，所提出的渐变可以通过为PRS提供更多辐射机会来显著降低SLL。其次，横向电场（TE）和横向磁场（TM）的不同入射模式可以通过考虑PRS更实际的照明环境来提高天线增益。我们已经证明，我们的天线在实现23 dB以上的高旁瓣抑制（SLS）的情况下提供19.8 dBi的增益。因此，所提出的FPCA可以在保持高增益的同时显著抑制旁瓣。仿真和实验之间的良好一致性证明了我们方案的有效性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/68c0/10514039/1bfa2eebf1ac/41598_2023_42716_Fig14_HTML.jpg
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Enhanced Bandwidth of High Directive Emission Fabry-Perot Resonator Antenna with Tapered Near-Zero Effective Index Using Metasurface.利用超表面实现具有渐变近零有效折射率的高定向发射法布里-珀罗谐振器天线的带宽增强
Sci Rep. 2017 Sep 13;7(1):11455. doi: 10.1038/s41598-017-11141-z.