Frequency-Selective Polarization-Rotation Reflective Surface Based on Transversal Coupling Topology

ZHU Xi-cheng; YUE Shi-chang; ZHANG Pan-pan; ZHANG Xin-yun

doi:10.12263/DZXB.20250324

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Frequency-Selective Polarization-Rotation Reflective Surface Based on Transversal Coupling Topology

更新时间：2025-12-22

- Frequency-Selective Polarization-Rotation Reflective Surface Based on Transversal Coupling Topology
- ACTA ELECTRONICA SINICA Pages: 1-9(2025)
- 作者机构：
  
  1.南京信息工程大学电子与信息工程学院雷达技术研究所，江苏南京 210044
  2.南京邮电大学电子与光学工程学院，江苏南京 210023
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(61701249;62071238);Natural Science Foundation of Jiangsu Province(BK20160959;BK20191011;BK20191399)
- DOI：10.12263/DZXB.20250324
  CLC： TN754;TN82
- Received：23 April 2025，
  
  Accepted：20 November 2025，
  
  Published Online：22 December 2025，
- 稿件说明：
移动端阅览
ZHU Xi-cheng, YUE Shi-chang, ZHANG Pan-pan, et al. Frequency-Selective Polarization-Rotation Reflective Surface Based on Transversal Coupling Topology[J/OL]. ACTA ELECTRONICA SINICA, 2025, 1-9.
DOI：

ZHU Xi-cheng, YUE Shi-chang, ZHANG Pan-pan, et al. Frequency-Selective Polarization-Rotation Reflective Surface Based on Transversal Coupling Topology[J/OL]. ACTA ELECTRONICA SINICA, 2025, 1-9. DOI： 10.12263/DZXB.20250324.

摘要

本文提出了一种基于横向耦合拓扑结构的极化扭转反射表面（Polarization Rotation Reflective Surface，PRRS）设计方法.该拓扑结构通过在单层金属平面内引入多路径谐振耦合网络，使多阶谐振模在紧凑的单元尺寸中得以充分激发，从而实现高阶带通响应与显著增强的频率选择特性.相比传统的基于梯形拓扑或多层结构的PRRS方案，该方法无需通孔或多层叠层，结构更为简化，同时保持了较强的谐振耦合能力，使得多个反射零点与陡峭的阻带滚降特性能够在单层结构中实现.本文设计的六阶PRRS单元由2个三模矩形谐振环组成，通过分别施加45°与135°旋转，使其在

A-A’

对称面上同时激发偶模与奇模谐振，从而构成6个可控谐振模式并在上下阻带引入5个交叉极化反射零点.横向耦合网络使各谐振单元能够与自由空间形成强耦合通道，实现高效的线极化到交叉极化反射转换.本文对基于该拓扑结构的PRRS进行了全波仿真、样品加工和实验测试，测量结果和仿真结果具有良好的一致性，所提出的六阶频率选择PRRS中心频率为10 GHz.在9.75~10.55 GHz工作频率范围内，交叉极化反射系数

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3.21733332

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3.72533321

均低于-0.3 dB；在9.65~10.3 GHz工作频率范围内，共极化反射系数

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3.21733332

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3.72533321

低于-10 dB，中心频率处的插入损耗约为0.24 dB，极化转换率（Polarization Con

version Ratio，PCR）在整个通带内均保持在85%以上，最高可达93%.当入射角增大至20°时，此时插入损耗约为0.35 dB，PCR在9.75~10.55 GHz工作频率范围内仍保持在85%以上，所提出的PRRS在斜入射下仍能保持优异的频率选择特性，上述结果验证了基于横向耦合拓扑结构的频率选择PRRS设计方法的可行性.本文所提出的基于横向耦合拓扑结构的PRRS在单层结构下实现了高阶带通频率响应、强带外抑制作用、低插入损耗和高极化转换效率，兼具结构简单和加工易实现等优势.该方法为未来高性能极化调控超表面、频率选择结构以及反射阵天线的设计提供了一种可扩展、具有工程实用价值的技术途径.

Abstract

This paper proposes a design method for a polarization-rotation reflective surface(PRRS) based on a transversal coupling topology. By introducing a multi-path resonant coupling network within a single-layer metallic plane

the topology enables multiple resonance modes to be fully excited within a compact unit size

thereby achieving a high-order bandpass response and significantly enhancing frequency selectivity as well as out-of-band suppression. Compared with traditional PRRS schemes based on ladder-type topologies or multilayer structures

the proposed method eliminates the need for vias or multilayer laminations while maintaining strong resonant coupling. As a result

multiple reflection zeros and steep stopband roll-off characteristics can be realized within a simplified single-layer configuration. The sixth-order PRRS unit designed in this work consists of two tri-mode rectangular resonant rings. By applying rotations of 45° and 135° to the two rings

respectively

even- and odd-mode resonances are simultaneously excited along the

’ symmetry plane

forming six controllable resonant modes and introducing five cross-polarization reflection nulls in the upper and lower stopbands. With the aid of the transversal coupling network

each resonant element establishes strong coupling with free space

enabling highly efficient conversion from linearly polarized incident waves to cross-polarized reflected waves within the target frequency band. Full-wave simulations

prototype fabrication

and experimental measurements were conducted to validate the proposed design

and excellent consistency between simulated and

measured results was achieved. The sixth-order frequency-selective PRRS exhibits a center frequency of 10 GHz. Within the frequency range of 9.75~10.55 GHz

the cross-polarized reflection coefficient

remains below -0.3 dB

while within 9.65~10.3 GHz

the co-polarized reflection coefficient

is below -10 dB. The measured insertion loss at the center frequency is approximately 0.24 dB

and the polarization conversion ratio polarization conversion ratio(PCR) exceeds 85% across the passband

reaching up to 93%. When the incident angle increases to 20°

the measured insertion loss remains approximately 0.35 dB

and the PCR stays above 85% within 9.75~10.55 GHz

demonstrating that the proposed PRRS maintains excellent frequency-selective performance under oblique incidence. In summary

the PRRS based on the transversal coupling topology achieves high-order bandpass response

strong out-of-band suppression

low insertion loss

and high polarization conversion efficiency using a single-layer structure. With its structural simplicity and ease of fabrication

the proposed method provides an expandable and practically valuable approach for the development of high-performance polarization-manipulating metasurfaces

frequency-selective structures

and reflective array antennas.

关键词

Keywords

references

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