title: Ultra Wideband Polarization-Selective Conversions of Electromagnetic Waves by Metasurface under Large-Range Incident Angles.
abstract: We propose an ultra-wideband polarization-conversion metasurface with polarization selective and incident-angle insensitive characteristics using anchor-shaped units through multiple resonances. The broadband characteristic is optimized by the genetic optimization algorithm, from which the anchor-shaped unit cell generates five resonances, resulting in expansion of the operating frequency range. Owing to the structural feature of the proposed metasurface, only x- and y-polarized incident waves can reach high-efficiency polarization conversions, realizing the polarization-selective property. The proposed metasurface is also insensitive to the angle of incident waves, which indicates a promising future in modern communication systems. We fabricate and measure the proposed metasurface, and both the simulated and measured results show ultra-wide bandwidth for the x- and y-polarized incident waves.
authors.affiliation: 1] State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China [2] Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing 210096, China.
authors.forename: Jia Yuan
authors.initials: JY
authors.lastname: Yin
authors.affiliation: 1] State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China [2] Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing 210096, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Wan
authors.affiliation: 1] State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China [2] Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing 210096, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China.
authors.forename: Tie Jun
authors.initials: TJ
authors.lastname: Cui