A wideband deflected reflection based on multiple resonances

作者：Chen, Hongya^*; Ma, Hua; Wang, Jiafu; Qu, Shaobo; Li, Yongfeng; Wang, Jun; Yan, Mingbao; Pang, Yongqiang

来源：Applied Physics A, 2015, 120(1): 287-291.

DOI：10.1007/s00339-015-9186-0

• TERAHERTZ METAMATERIALS
• PHASE DISCONTINUITIES
• LIGHT

We propose to realize wideband deflected reflection in microwave regime through multiple resonances. A wideband deflected reflection of a phase gradient metasurface is designed using a double-head arrow structure, which has demonstrated an ultra-wideband cross-polarized reflection caused by multiple electric and magnetic resonances. The wideband effect benefits from the wideband cross-polarized reflection and flexible phase modulation of the double-head arrow structure. Simulated and experimental results agree well with theoretical predictions. Furthermore, relative bandwidths of deflected reflection reach to 71 % for both x- and y-polarized waves under normal incidence. Our method of expansion bandwidth may pave the way in many practical applications, such as RCS reduction, stealth surfaces.

• 出版日期2015-7
• 单位中国人民解放军空军工程大学