The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2021
Filed:
Jun. 15, 2017
Nanjing University, Nanjing, CN;
Bin Liang, Nanjing, CN;
Yifan Zhu, Nanjing, CN;
Xinye Zou, Nanjing, CN;
Jing Yang, Nanjing, CN;
Xudong Fan, Nanjing, CN;
Jianchun Cheng, Nanjing, CN;
NANJING UNIVERSITY, Nanjing, CN;
Abstract
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 f, the neck widths w of different unit cells are different, and a distribution of the widths satisfies a certain sequence.