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- 入职时间：2000-07-01
- 学历：博士研究生毕业
- 办公地点：清水河校区研究院大楼404B
- 性别：男
- 联系方式：lanfeng@uestc.edu.cn
- 学位：工学博士学位
- 职称：教授
- 博士生导师
- 曾获荣誉：2022年四川省技术发明一等奖，其他部级奖项2项
- 学科：电子科学与技术
Collective-Coupling Enhanced Ultrabroadband Linear Polarization Conversion on Zigzag-Split Metasurfaces
- 点击次数：
- 所属单位：[1]Univ Elect Sci & Technol, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China;[2]Univ Elect Sci & Technol China, Yangtze Delta Reg Inst Huzhou, Huzhou 313001, Peoples R China;[3]Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China;[4]Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
- 发表刊物：IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
- 关键字：Bandwidth; Metasurfaces; Couplings; Gratings; Resonant frequency; Compounds; Optical resonators; Metasurface; mutual coupling; polarization; ultrawideband radar
- 摘要：Polarization manipulation plays a pivotal role in integrated multifunctional devices. Various metasurface-based polarization converters successfully demonstrated high efficiency and broad bandwidth. However, new mechanisms to aggressively enhance performance are still in dire need. Here, theoretical and experimental evidence corroborates an efficient ultrawideband transmissive polarization converter based on a topological design method. The triple-layer meta-device consists of a layer of anisotropic zigzag-split resonator array amid two orthogonal wire-grating layers. By splitting double zigzag lines into compound 90 degrees V-shaped resonators, the intraunit cross coupling extends to strong interunit cross coupling, giving birth to the multiresonance enhancement and significant bandwidth broadening. This polarization converter can efficiently convert linearly polarized incident waves into 90 degrees cross-polarized transmitted waves, with a conversion efficiency above 80% over 3.98-22.71 GHz, reaching a fractional bandwidth of 140.4%. The proposed meta-device enables strong cross coupling in mutual transition from intraunit to interunit. From a physical viewpoint, the novel mechanism is elucidated by the surface current and electric field distributions upon constructive interferences stemming from V-shape-resonator combinations and the Fabry-Perot-like cavity effect. With both spectrum and function extensions, the proposed polarization conversion strategy finds essential applications in polarization-related systematic scenarios, such as 6G communication, radar imaging, anti-interference, and chiral sensing.
- 文献类型：Article
- 卷号：71
- 期号：6
- 页面范围：5001-5013
- ISSN号：0018-926X
- 是否译文：否