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采用改进型波导和 CSRR 超材料的小型化 V 波段圆极化漏波天线，具有连续辐射覆盖范围。

Miniaturized V-band circularly polarized leaky-wave antenna with continuous radiation coverage using modified waveguide and metasurface CSRRs.

机构信息

School of Electrical Engineering, University of Zanjan, Zanjan, Iran.

School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran.

出版信息

Sci Rep. 2023 Jun 22;13(1):10162. doi: 10.1038/s41598-023-37362-z.

DOI:10.1038/s41598-023-37362-z
PMID:37349342
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10287652/
Abstract

A miniaturized V-band leaky-wave antenna (LWA) with circular polarization and backward-broadside-forward radiation based on a modified half-mode substrate integrated waveguide (M-HMSIW) is presented. The proposed M-HMSIW structure employs broadside coupled complementary split ring resonators to replace metallic vias, resulting in low-cost and fully-planar fabrication advantages over conventional HMSIWs. Each unit cell of the proposed LWA consists of an M-HMSIW in combination with two horizontal stubs and a cross-shaped complementary electric LC slot to provide a proper circular polarization with a composite right/left-handed property. Using this structure, the balanced condition can be obtained for the unit cell; hence a continuous backward-to-forward scanning, including broadside, is achieved. As a result, the proposed LWA with a radiator length of only 3.8 λ provides wide-angle beam scanning from - 53° to + 54° over the frequency range of 61.2 GHz to 73.4 GHz, while maintaining an excellent circular polarization between - 25° and 25°. The maximum gain of the LWA is 11.1 dB which is satisfactory, considering its compactness. The antenna's performance is experimentally verified, and close agreement between the simulations and measurements is observed.

摘要

一种基于改进型半模基片集成波导（M-HMSIW）的小型化 V 波段漏波天线（LWA），具有圆极化和后向-宽边-前向辐射。所提出的 M-HMSIW 结构采用宽边耦合互补分裂环谐振器代替金属过孔，与传统 HMSIWs 相比具有低成本和完全平面制造的优势。所提出的 LWA 的每个单元由一个 M-HMSIW 结合两个水平短截线和一个十字形互补电 LC 槽组成，提供具有复合左右手特性的适当圆极化。使用这种结构，可以获得单元的平衡条件；因此，可以实现从宽边到前向的连续向后扫描。结果，所提出的 LWA 仅长 3.8 λ，在 61.2 GHz 至 73.4 GHz 的频率范围内提供从 -53°到 +54°的宽角度波束扫描，同时在 -25°至 25°之间保持出色的圆极化。考虑到其紧凑性，LWA 的最大增益为 11.1 dB，这是令人满意的。天线的性能通过实验进行了验证，模拟和测量结果之间存在很好的一致性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1901/10287652/26e9aa9d98e6/41598_2023_37362_Fig18_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1901/10287652/1dcaa6d37ff1/41598_2023_37362_Fig9_HTML.jpg
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