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:
Oct. 21, 2025
Filed:
Jul. 14, 2021
National Research Council of Canada, Ottawa, CA;
Carleton University, Ottawa, CA;
Daniele Melati, Ottawa, CA;
Dan-Xia Xu, Ottawa, CA;
Pavel Cheben, Ottawa, CA;
Jens H. Schmid, Ottawa, CA;
Mohsen Kamandar-Dezfouli, Ottawa, CA;
Yuri Grinberg, Ottawa, CA;
Ross Cheriton, Ottawa, CA;
Siegfried Janz, Ottawa, CA;
Winnie N. Ye, Ottawa, CA;
Shahrzad Khajavi, Ottawa, CA;
NATIONAL RESEARCH COUNCIL OF CANADA, Ottawa, CA;
CARLETON UNIVERSITY, Ottawa, CA;
Abstract
An antenna device for performing off-chip light coupling comprising an array of radiating elements whose thickness is larger than λ/2, the radiating elements being chosen such that the length of the array is smaller than 10λ, where λ is the wavelength of light in the material chosen for the radiating elements. An advantage of this method is that, unlike in conventional waveguide grating antenna, by reducing the number of the radiating elements in the array, the dependence of the off-chip emission angle on the wavelength of light can be greatly reduced. Another advantage is that by using thick radiating elements the antenna efficiency can be greatly enhanced, thereby compensating for the reduced efficiency occurring as a consequence of using only a small number of radiating elements in the array.