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:
Apr. 29, 2025
Filed:
Jan. 29, 2020
Stmicroelectronics (China) Investment Co., Ltd., Shanghai, CN;
STMICROELECTRONICS (CHINA) INVESTMENT CO., LTD., Shanghai, CN;
Abstract
In one aspect, the NFC device includes an antenna that includes first and second terminals, a first resistor on a first current path, and a second resistor on a second current path. The NFC device includes a first switch that switches between open and closed states, where the first switch couples the first current path to the first terminal in the closed state. The NFC device includes a second switch that switches between open and closed states, where the second switch couples the second current path to the second terminal in the closed state. The NFC device includes a controller in communication with the first and second switches and configured to set a Q factor of the antenna to a first or second value by operating the first and second switches.