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
余积宝a, 马华a, 王甲富a, 李勇峰a, 冯明德a b, 屈绍波a
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
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.
中图分类号: (Metamaterials for chiral, bianisotropic and other complex media)