基于超表面的宽带超低剖面折叠透射阵

钟显江; 许河秀; 侯建强; 陈蕾; 肖秦琨

doi:10.11999/JEIT220007

基于超表面的宽带超低剖面折叠透射阵

doi: 10.11999/JEIT220007

1.
西安工业大学电子信息工程学院西安 710021
2.
空军工程大学防空反导学院西安 710051
3.
西安电子科技大学天线与微波技术重点实验室西安 710071

基金项目: 国家自然科学基金(62171459, 62071366)，陕西省自然科学基金(2020JZ-33, 2020JQ-814)，陕西省高校科协青年人才托举计划项目(20200114)，陕西省教育厅自然科学基金(21JK0683)

详细信息

作者简介:
钟显江：男，博士，副教授，研究方向为天线与电磁兼容、人工电磁材料设计

许河秀：男，博士，教授，博士生导师，研究方向为超材料/超表面电磁调控机理与应用研究

侯建强：男，博士，副教授，硕士生导师，研究方向为天线与微波电路设计

陈蕾：女，博士，副教授，硕士生导师，研究方向为天线与微波器件设计

肖秦琨：男，博士，教授，博士生导师，研究方向为智能机电系统

通讯作者:
许河秀　hxxuellen@gmail.com

中图分类号: TN820
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出版历程
- 收稿日期: 2022-01-05
- 修回日期: 2022-03-15
- 网络出版日期: 2022-04-17
- 刊出日期: 2022-12-16

Wideband Ultralow-profile Folded Transmitarray Based on Metasurface

1.
School of Electronic Information Engineering, Xi’an Technological University, Xi’an 710021, China
2.
Institute of Air Defense and Anti-Missile, Air Force Engineering University, Xi’an 710051, China
3.
Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (62171459, 62071366), The Natural Science Foundation of Shaanxi Province (2020JZ-33, 2020JQ-814), The Youth Talent Foudation of Shaanxi University Association for Science and Technology (20200114), The Natural Science Foundation of Shaanxi Education Department (21JK0683)

摘要

摘要: 该文提出了基于超表面的宽带超低剖面折叠透射阵天线设计方法。该天线由两种超表面阵列和一个作为馈源的开口波导构成。其中，下层超表面能够将馈源发射的线极化入射波转换为交叉极化反射波，上层超表面能够实现特定线极化波的全反射和另一种线极化波的全透射。通过合理设计，该天线能够将辐射电磁波来回反射3次并在较宽频带内实现增益提升，同时其剖面高度能够降至传统透射阵的1/4。天线实测和仿真结果吻合良好，表明3 dB增益带宽达到19.6%(9.2～11.2 GHz)，且9.6 GHz处峰值增益达21 dBi，峰值口径效率为30%。该文设计方法为实现宽带低剖面阵列天线设计提供了新思路。
- 天线 /
- 超表面 /
- 宽带 /
- 超低剖面 /
- 折叠透射阵
Abstract: This paper proposes a novel design strategy for wideband ultralow-profile Folded TransmitArray (FTA) antenna using metasurfaces. It consists of two kinds of metasurfaces and an open waveguide antenna as the feed source. The bottom metasurface is applied to transforming the linearly polarized wave coming from feed antenna into its cross-polarized reflected ones. Meanwhile, the top metasurface is capable of reflecting one linearly polarized wave and transmitting the other orthogonal counterpart. With smart design, the proposed FTA can reflect the electromagnetic wave back three times between two metasurfaces and realize high gain performance within a wide frequency band, and its profile height is decreased to 1/4 that of conventional transmitarray. The simulated and measured results are basically consistent, which demonstrates a 3 dB gain bandwidth of 19.6% (9.2～11.2 GHz), a peak gain of 21 dBi and a peak aperture efficiency of 30% at 9.6 GHz. The proposed design offers a new avenue for wideband low profile array antenna.
- Antenna /
- Metasurface /
- Wideband /
- Ultralow profile /
- Folded TransmitArray (FTA)

HTML全文

图 1 折叠透射阵天线结构与工作机理

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图 2 集成透-反射超表面单元的结构图

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图 3 集成透-反射超表面单元的反射系数和透射系数

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图 4 不同极化入射波照射下集成透-反射超表面单元在10 GHz处的各层表面电流分布

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图 5 反射型线极化转换超表面单元示意图

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图 6 反射型线极化转换超表面单元的反射系数

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图 7 不同极化入射波照射下的线极化转换反射超表面单元在10GHz处的表面电流分布

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图 8 聚焦超表面的相位分布与单元分布

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图 9 折叠透射阵天线模型

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图 10 折叠透射阵天线实物图

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图 11 折叠透射阵天线在不同频率处xoz面和yoz面的辐射方向图

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图 12 折叠透射阵天线性能随频率的变化曲线

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表 1 本文折叠透射阵天线与部分参考文献性能比较图

	文献[15]	文献[16]	文献[17]	文献[18]	本文
中心频率(GHz)	60	29	11.5	10.3	10
剖面高度	F/3	F/3	F/3	F/3	F/4
极化方式	线极化	线极化	线极化	圆极化	线极化
峰值增益(dBi)	32.7	24.2	23.5	21.94	21.1
1.5/3 dB增益带宽(%)	11.6(1.5 dB)	13.8(3 dB)	43.5(3 dB)	11.6(3 dB)	19.6(3 dB)
峰值口径效率(%)	25.7	20.2	32.8	21.8	30

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参考文献(18)

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