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:
Jul. 23, 2024
Filed:
Sep. 14, 2021
The Regents of the University of Michigan, Ann Arbor, MI (US);
Faris Alsolamy, Ann Arbor, MI (US);
Anthony Grbic, Ann Arbor, MI (US);
The Regents of The University of Michigan, Ann Arbor, MI (US);
Abstract
Electromagnetic fields within a waveguide can be expressed in terms of the complex amplitudes of the electromagnetic modes it supports. The electromagnetic fields can be shaped by controlling the complex amplitudes of modes. Here, mode-converting metasurfaces are designed to transform a set of incident modes on one side to a different set of desired modes on the opposite side of the metasurface. A mode-converting metasurface comprises multiple inhomogeneous (spatially-varying) reactive electric sheets that are separated by dielectric spacers. The reactance profile of each electric sheet to perform the needed mode conversion is found through optimization. The optimization routine takes advantage of a multimodal solver that uses two main concepts: modal network theory and a discrete Fourier transform algorithm. With modal network theory, the modes can be translated between the electric sheets using matrix multiplication. Additionally, modal network theory accounts for the multiple reflections between the reactive electric sheets, as well as coupling between the sheets.