title: Ultra-broadband Reflective Metamaterial with RCS Reduction based on Polarization Convertor, Information Entropy Theory and Genetic Optimization Algorithm.
abstract: We proposed an ultra-broadband reflective metamaterial with controlling the scattering electromagnetic fields based on a polarization convertor. The unit cell of the polarization convertor was composed of a three layers substrate with double metallic split-rings structure and a metal ground plane. The proposed polarization convertor and that with rotation angle of 90 deg had been employed as the "0" and "1" elements to design the digital reflective metamaterial. The numbers of the "0" and "1" elements were chosen based on the information entropy theory. Then, the optimized combinational format was selected by genetic optimization algorithm. The scattering electromagnetic fields had been manipulated due to destructive interference, which was attributed to the control of phase and amplitude by the proposed polarization convertor. Simulated and experimental results indicated that the reflective metamaterial exhibited significantly RCS reduction in an ultra-broad frequency band for both normal and oblique incidences.
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Si Jia
authors.initials: SJ
authors.lastname: Li
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Xiang Yu
authors.initials: XY
authors.lastname: Cao
authors.affiliation: Science and Technology on Electronic Information Control Laboratory, Chendu 610036, China.
authors.forename: Li Ming
authors.initials: LM
authors.lastname: Xu
authors.affiliation: School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
authors.forename: Long Jian
authors.initials: LJ
authors.lastname: Zhou
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.|Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China.
authors.forename: Huan Huan
authors.initials: HH
authors.lastname: Yang
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Jiang Feng
authors.initials: JF
authors.lastname: Han
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Di
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Liu
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Yue Jun
authors.initials: YJ
authors.lastname: Zheng
authors.affiliation: Information and Navigation College, Air Force Engineering University, Xi'an 710077, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhao