公开(公告)号：US20190130892A1

公开(公告)日：2019-05-02

申请号：US16091935

申请日：2017-06-15

申请人： NANJING UNIVERSITY

发明人： Bin LIANG ,  Yifan ZHU ,  Xinye ZOU ,  Jing YANG ,  Xudong FAN ,  Jianchun CHENG

IPC分类号： G10K11/20

摘要： An ultra-thin Schroeder diffuser comprises a backing-plate, wherein the backing-plate is provided with 7×p rows and 7×q columns of unit cells, p and q are integers greater than or equal to 1, a side length of the unit cell is 0.48λ, a depth of the square unit cell is 0.04λ, the unit cell is provided with a square neck, a side length of the square neck is less than the side length of the unit cell, a depth of the neck is 0.01λ, λ is a wavelength of the diffuser corresponding to the design at a center frequency center f0, the neck widths w of different unit cells are different, and a distribution of the widths satisfies a certain sequence.