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:
Jan. 18, 2022
Filed:
Aug. 29, 2019
Applicant:
Infineon Technologies Ag, Neubiberg, DE;
Inventors:
Gerald Holweg, Graz, AT;
Carolin Kollegger, Stallhofen, AT;
Johannes Schweighofer, Graz, AT;
Inge Siegl, Graz, AT;
Christoph Steffan, Graz, AT;
Assignee:
Infineon Technologies AG, Neubiberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 5/00 (2006.01); H04B 5/02 (2006.01); G06K 19/077 (2006.01); G06K 19/07 (2006.01); G06K 7/10 (2006.01);
U.S. Cl.
CPC ...
H04B 5/0031 (2013.01); G06K 7/10237 (2013.01); G06K 19/0716 (2013.01); G06K 19/0726 (2013.01); G06K 19/0773 (2013.01); G06K 19/07749 (2013.01); H04B 5/0062 (2013.01); H04B 5/02 (2013.01);
Abstract
A circuit for an NFC chip is described herein. According to one exemplary configuration, the circuit comprises an antenna for near field communication, an antenna resonant circuit which has an adjustable resonant frequency, a temperature sensor and a controller circuit coupled to the temperature sensor. The controller circuit is designed to change the resonant frequency of the antenna resonant circuit according to a temperature sensor signal provided by the temperature sensor.