title: Broadband diffusion metasurface based on a single anisotropic element and optimized by the Simulated Annealing algorithm.
abstract: We propose a new strategy to design broadband and wide angle diffusion metasurfaces. An anisotropic structure which has opposite phases under x- and y-polarized incidence is employed as the "0" and "1" elements base on the concept of coding metamaterial. To obtain a uniform backward scattering under normal incidence, Simulated Annealing algorithm is utilized in this paper to calculate the optimal layout. The proposed method provides an efficient way to design diffusion metasurface with a simple structure, which has been proved by both simulations and measurements.
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Cao
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Gao
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.|Department of Electronic Engineering, Tsinghua University, Beijing, 10084, China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Yang
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Liu
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Yulong
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Han
authors.affiliation: Information and Navigation Institute, Air Force Engineering University, Xi'an,710077, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen