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:
May. 10, 2022
Filed:
Nov. 09, 2017
Fujikura Ltd., Tokyo, JP;
Yuta Hasegawa, Sakura, JP;
Ning Guan, Sakura, JP;
FUJIKURA LTD., Tokyo, JP;
Abstract
The present invention provides an antenna device that has a radiation pattern whose peak direction is independent of a frequency of an electromagnetic wave emitted. The antenna device includes: a ground layer () made of an electric conductor; a plurality of array antennas () provided in a layer above the ground layer (); and a Rotman lens () provided in a layer below the ground layer (). Each array antenna () includes: a power feed line (Li) at a center of which a feedpoint (Pi) is located; and a plurality of antenna elements (throughandthrough) connected to the power feed line (Li), and has a point symmetric shape with respect to the feedpoint (Pi) as a center of symmetry. Each feedpoint (Pi) is coupled to any one output port () of the Rotman lens () via a slot () provided in the ground layer ().