中国物理B ›› 2024, Vol. 33 ›› Issue (2): 24102-024102.doi: 10.1088/1674-1056/ad0119

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Wideband low-scattering metasurface with an in-band reconfigurable transparent window

Ying Zhu(朱瑛), Weixu Yang(杨维旭), Kun Duan(段坤), Tian Jiang(姜田), Junming Zhao(赵俊明), Ke Chen(陈克), and Yijun Feng(冯一军)   

  1. School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China
  • 收稿日期:2023-08-08 修回日期:2023-09-24 接受日期:2023-10-07 出版日期:2024-01-16 发布日期:2024-01-16
  • 通讯作者: Junming Zhao, Ke Chen E-mail:jmzhao@nju.edu.cn;ke.chen@nju.edu.cn
  • 基金资助:
    Project supported by the Joint Fund of Ministry of Education for Equipment Pre-research (Grant No. 8091B032112), the National Natural Science Foundation of China (Grant Nos. 62271243 and 62071215), the Priority Academic Program Development of Jiangsu Higher Education Institutions, the Fundamental Research Funds for the Central Universities, and Jiangsu Provincial Key Laboratory of Advanced Manipulating Technique of Electromagnetic Wave.

Wideband low-scattering metasurface with an in-band reconfigurable transparent window

Ying Zhu(朱瑛), Weixu Yang(杨维旭), Kun Duan(段坤), Tian Jiang(姜田), Junming Zhao(赵俊明), Ke Chen(陈克), and Yijun Feng(冯一军)   

  1. School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China
  • Received:2023-08-08 Revised:2023-09-24 Accepted:2023-10-07 Online:2024-01-16 Published:2024-01-16
  • Contact: Junming Zhao, Ke Chen E-mail:jmzhao@nju.edu.cn;ke.chen@nju.edu.cn
  • Supported by:
    Project supported by the Joint Fund of Ministry of Education for Equipment Pre-research (Grant No. 8091B032112), the National Natural Science Foundation of China (Grant Nos. 62271243 and 62071215), the Priority Academic Program Development of Jiangsu Higher Education Institutions, the Fundamental Research Funds for the Central Universities, and Jiangsu Provincial Key Laboratory of Advanced Manipulating Technique of Electromagnetic Wave.

摘要: Active metasurfaces with dynamically reconfigurable functionalities are highly demanded in various practical applications. Here, we propose a wideband low-scattering metasurface that can realize an in-band reconfigurable transparent window by altering the operation states of the PIN diodes loaded on the structures. The metasurface is composed of a band-pass frequency selective surface (FSS) sandwiched between two polarization conversion metasurfaces (PCMs). PIN diodes are integrated into the FSS to switch the transparent window, while a checkerboard configuration is applied in PCMs for the diffusive-reflective function. A sample with 20×20 elements is designed, fabricated, and experimentally verified. Both simulated and measured results show that the in-band functions can be dynamically switched between beam-splitting scattering and high transmission by controlling the biasing states of the diodes, while low backscattering can be attained outside the passband. Furthermore, the resonant structures of FSS also play the role of feeding lines, thus significantly eliminating extra interference compared with conventional feeding networks. We envision that the proposed metasurface may provide new possibilities for the development of an intelligent stealth platform and its antenna applications.

关键词: metasurface, reconfigurable transparent window, radar cross section (RCS) reduction

Abstract: Active metasurfaces with dynamically reconfigurable functionalities are highly demanded in various practical applications. Here, we propose a wideband low-scattering metasurface that can realize an in-band reconfigurable transparent window by altering the operation states of the PIN diodes loaded on the structures. The metasurface is composed of a band-pass frequency selective surface (FSS) sandwiched between two polarization conversion metasurfaces (PCMs). PIN diodes are integrated into the FSS to switch the transparent window, while a checkerboard configuration is applied in PCMs for the diffusive-reflective function. A sample with 20×20 elements is designed, fabricated, and experimentally verified. Both simulated and measured results show that the in-band functions can be dynamically switched between beam-splitting scattering and high transmission by controlling the biasing states of the diodes, while low backscattering can be attained outside the passband. Furthermore, the resonant structures of FSS also play the role of feeding lines, thus significantly eliminating extra interference compared with conventional feeding networks. We envision that the proposed metasurface may provide new possibilities for the development of an intelligent stealth platform and its antenna applications.

Key words: metasurface, reconfigurable transparent window, radar cross section (RCS) reduction

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media)