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:
Jun. 25, 2019
Filed:
Feb. 02, 2018
Applicant:
Sick Ag, Waldkirch, DE;
Inventor:
Florian Pudenz, Waldkirch, DE;
Assignee:
SICK AG, Waldkirch, DE;
Primary Examiner:
Int. Cl.
CPC ...
G06K 19/06 (2006.01); G06K 19/077 (2006.01); H01Q 1/22 (2006.01); H01Q 9/42 (2006.01); H01Q 21/24 (2006.01); G06K 7/10 (2006.01); G06K 19/07 (2006.01);
U.S. Cl.
CPC ...
G06K 19/07773 (2013.01); G06K 7/10346 (2013.01); G06K 19/0723 (2013.01); H01Q 1/2216 (2013.01); H01Q 9/42 (2013.01); H01Q 21/24 (2013.01);
Abstract
An antenna () for an RFID reading apparatus having a plurality of single antennas () of the inverted-F type, wherein the single antennas () are arranged in a plane and are arranged tilted with respect to one another within the plane, and having a feed circuit () that is connected to the single antennas () to control the single antennas () to generate a circular polarization having a mutual phase offset corresponding to the tilt is provided. The antenna () in this respect has at least four single antennas (-), the single antennas (-) are arranged in a direction of rotation, and the antenna () has a common ground plane () in parallel with the plane.