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. 11, 2017
Filed:
Sep. 18, 2014
N.v. Nederlandsche Apparatenfabriek “nedap”, Groenlo, NL;
Bernardus Clemens Maria Van Zon, Groenlo, NL;
N.V. NEDERLANDSCHE APPARATENFABRIEK “NEDAP”, Groenlo, NL;
Abstract
Reader for an electronic UHF access control system, wherein the reader in operation cooperates with corresponding UHF tags and is provided with a housing, in which an antenna system for creating an electromagnetic interrogation field is arranged, wherein the antenna system comprises a first antenna for generating an interrogation field with a first polarization direction, and a second antenna for generating an interrogation field with a second polarization direction, wherein the first and the second polarization directions are substantially orthogonal to each other, and wherein the first antenna is a loop antenna with an open central area, and the second antenna is an antenna of the inverted F type (IFA), which is placed in the open central area of the loop antenna.