公开(公告)号：US20250111176A1

公开(公告)日：2025-04-03

申请号：US18830266

申请日：2024-09-10

Applicant: STMicroelectronics International N.V.

Inventor： Alexandre Tramoni ,  Remy Ferroul

IPC: G06K7/10 ,  G06K19/07 ,  G06K19/077

Abstract: The present description relates to a mobile device comprising a near-field communication router and an antenna, coupled to the router via at least one impedance matching circuit between at least two impedance values. A first impedance value is selected to communicate with a near-field communication device of a first type in the presence of a near-field communication device of a second type, and a second impedance value is selected to communicate with a near-field communication device of the first type in the absence of a near-field communication device of the second type. The presence or the absence of a near-field communication device of the second type is determined based on polling frames transmitted by the antenna.