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:
Aug. 11, 2026
Filed:
Dec. 08, 2023
Huawei Technologies Co., Ltd., Shenzhen, CN;
Rui Yu, Singapore, SG;
Xuesong Chen, Singapore, SG;
Supeng Liu, Singapore, SG;
Lei Wang, Singapore, SG;
Zhan Yu, Singapore, SG;
Theng Tee Yeo, Singapore, SG;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A near-field communication (NFC) chip, a phase synchronization method, and an electronic device related to the field of communication technologies are provided, to quickly synchronize a transmitted signal of an NFC card device with a carrier of an NFC card reader. The NFC chip includes a processing circuit configured to: determine a first carrier frequency offset between a local clock signal and a carrier clock signal, and generate a first frequency control word based on the first carrier frequency offset. The NFC chip further includes a phase-locked loop configured to generate a first clock signal based on the local clock signal and the first frequency control word. The NFC chip also includes a phase alignment circuit configured to perform phase selection on the first clock signal based on the carrier clock signal to obtain a second clock signal, and send the second clock signal to a transmitter circuit.