中国物理B ›› 2015, Vol. 24 ›› Issue (9): 98102-098102.doi: 10.1088/1674-1056/24/9/098102

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

High-efficiency wideband flat focusing reflector mediated by metasurfaces

余积宝a, 马华a, 王甲富a, 李勇峰a, 冯明德a b, 屈绍波a   

  1. a School of Science, Air Force Engineering University, Xi'an 710051, China;
    b State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2015-03-12 修回日期:2015-04-21 出版日期:2015-09-05 发布日期:2015-09-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 11274389, and 11204378), the Postdoctoral Science Foundation of China (Grant Nos. 2013M532131 and 2014M552451), and the Foundation of the Author of National Excellent Doctoral Dissertation of China (Grant No. 201242).

High-efficiency wideband flat focusing reflector mediated by metasurfaces

Yu Ji-Bao (余积宝)a, Ma Hua (马华)a, Wang Jia-Fu (王甲富)a, Li Yong-Feng (李勇峰)a, Feng Ming-De (冯明德)a b, Qu Shao-Bo (屈绍波)a   

  1. a School of Science, Air Force Engineering University, Xi'an 710051, China;
    b State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2015-03-12 Revised:2015-04-21 Online:2015-09-05 Published:2015-09-05
  • Contact: Ma Hua, Qu Shao-Bo E-mail:mahuar@163.com;qushaobo@mail.xjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 11274389, and 11204378), the Postdoctoral Science Foundation of China (Grant Nos. 2013M532131 and 2014M552451), and the Foundation of the Author of National Excellent Doctoral Dissertation of China (Grant No. 201242).

摘要: We propose to achieve a high-efficiency wideband flat focusing reflector using metasurfaces. To obtain the wide band, the polarization conversion mechanism is introduced into the reflector design, based on the fact that the reflection phases of cross-polarized waves are linear in quite a wide band. This facilitates the design of wideband parabolic reflection phase profile. As an example, we design two reflective focusing metasurfaces with one- and two-dimensional in-plane parabolic reflection phase profiles based on elliptical split ring resonators (ESRRs). Both the simulation and experiment verify the wideband focusing performance in 10.0-22.0 GHz of the flat reflectors. Due to the wide operating band, such reflectors have important application values in communication, detection, measurement, imaging, etc.

关键词: metasurface, focus, phase gradient, wideband

Abstract: We propose to achieve a high-efficiency wideband flat focusing reflector using metasurfaces. To obtain the wide band, the polarization conversion mechanism is introduced into the reflector design, based on the fact that the reflection phases of cross-polarized waves are linear in quite a wide band. This facilitates the design of wideband parabolic reflection phase profile. As an example, we design two reflective focusing metasurfaces with one- and two-dimensional in-plane parabolic reflection phase profiles based on elliptical split ring resonators (ESRRs). Both the simulation and experiment verify the wideband focusing performance in 10.0-22.0 GHz of the flat reflectors. Due to the wide operating band, such reflectors have important application values in communication, detection, measurement, imaging, etc.

Key words: metasurface, focus, phase gradient, wideband

中图分类号:  (Metamaterials for chiral, bianisotropic and other complex media)

  • 81.05.Xj
41.20.Jb (Electromagnetic wave propagation; radiowave propagation)