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:
Dec. 15, 2020
Filed:
May. 01, 2018
The University of Electro-communications, Chofu, JP;
Akira Saitou, Chofu, JP;
Hiroto Otsuka, Chofu, JP;
Kazuhiko Honjo, Chofu, JP;
Ryo Ishikawa, Chofu, JP;
THE UNIVERSITY OF ELECTRO-COMMUNICATIONS, Tokyo, JP;
Abstract
Circular loop antenna elements of each of a transmitting antennaand a receiving antennahave different perimeters of approximately integral multiples of a wavelength determined from a wireless communication frequency. The transmitting antennaand the receiving antennainclude first circular loop antenna groupsA andA concentrically disposed on the same plane and second circular loop antenna groupsB andB including circular loop antenna elements of the same perimeter as that of a plurality of circular loop antenna elements of the first circular loop antenna group. An angular position of a terminal for connecting power supply units to circular loop antenna elements having the same perimeter is set to an angular position rotated by (2l+1)π/2m(where l is any integer, and mis a value of mto mthat are approximately integral multiples of a wavelength) in the first and second circular loop antenna groups.