公开(公告)号：US12068807B2

公开(公告)日：2024-08-20

申请号：US18446224

申请日：2023-08-08

Applicant: STMicroelectronics Razvoj Polprevodnikov D.O.O. ,  STMicroelectronics Austria GmbH

Inventor： Gustavo Jose Henriques Patricio ,  Anton Stern

IPC: H04B5/72 ,  H04W4/80 ,  H04W48/16

CPC classification number: H04B5/72 ,  H04W4/80 ,  H04W48/16

Abstract: The disclosure relates to a modified NFC framing is used by a reader and selected devices during at least a part of the communication between the reader and the selected devices. The reader and the selected devices store modification rules for modifying the frames. Devices not storing those modification rules will discard the received modified frames.

公开(公告)号：US20230370117A1

公开(公告)日：2023-11-16

申请号：US18314667

申请日：2023-05-09

Applicant: STMicroelectronics Austria GmbH

Inventor： Thomas Poetscher

IPC: H04B5/00 ,  H01Q7/00

CPC classification number: H04B5/0056 ,  H01Q7/00 ,  H04B5/0031

Abstract: In an embodiment a device includes an electrically conductive structure, a near field communication (NFC) reader including a support supporting an electrically conductive NFC loop antenna system located in a vicinity of the electrically conductive structure and a component configured to excite the loop antenna system with a current, wherein the loop antenna system has a geometry configured to generate several electromagnetic fields in response to excitation by the current, the electromagnetic fields having a NFC carrier frequency and respective different field directions adapted to induce respective eddy currents cancelling each other in the electrically conductive structure.

公开(公告)号：US11522578B2

公开(公告)日：2022-12-06

申请号：US17371344

申请日：2021-07-09

Applicant: STMicroelectronics Austria GmbH

Inventor： Christoph Chlestil

IPC: H04B5/00

Abstract: The present disclosure relates to a near-field communications circuit, comprising: a near-field communications controller; a matching network; and a switch, wherein the switch has one or more inputs, coupled to one or more outputs of the near-field communications controller via the matching network, and a plurality of outputs, each output being suitable for coupling the switch to a corresponding one of a plurality of near-field communications antennas.

公开(公告)号：US11501093B2

公开(公告)日：2022-11-15

申请号：US16773191

申请日：2020-01-27

Applicant: STMicroelectronics Austria GmbH

Inventor： Thomas Poetscher ,  Michael Gugganig

IPC: H04B5/02 ,  G06K7/00 ,  H04B17/12 ,  H04W4/80 ,  G06K7/10 ,  H04B5/00 ,  G08B13/24 ,  H04W52/00

Abstract: In an embodiment, a method of managing an output power delivered by an antenna of a NFC apparatus includes: providing a matching circuit with a first tuning capacitive network coupled in series between a NFC controller and the antenna and with a second tuning capacitive network coupled to the NFC controller and the antenna and to a reference terminal, wherein the first or second tuning capacitive network has a variable capacitive value; determining tuning capacitive values of the first tuning capacitive networks to adjust a delivered output power at a desired level; and setting the tuning capacitive values of the first tuning capacitive network to the tuning capacitive values.

公开(公告)号：US20220014233A1

公开(公告)日：2022-01-13

申请号：US17371344

申请日：2021-07-09

Applicant: STMicroelectronics Austria GmbH

Inventor： Christoph Chlestil

IPC: H04B5/00

Abstract: The present disclosure relates to a near-field communications circuit, comprising: a near-field communications controller; a matching network; and a switch, wherein the switch has one or more inputs, coupled to one or more outputs of the near-field communications controller via the matching network, and a plurality of outputs, each output being suitable for coupling the switch to a corresponding one of a plurality of near-field communications antennas.

公开(公告)号：US11218191B2

公开(公告)日：2022-01-04

申请号：US16850383

申请日：2020-04-16

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco Antonetti

IPC: H04B5/00 ,  H01Q7/00 ,  G06Q20/20 ,  H01Q1/24 ,  H01Q1/38

Abstract: A near-field communication antenna includes a conductive plane; and four slots in the conductive plane.

公开(公告)号：US20190140358A1

公开(公告)日：2019-05-09

申请号：US16180744

申请日：2018-11-05

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco Antonetti

IPC: H01Q19/00 ,  H04W4/80 ,  H01Q1/38 ,  H01Q7/00 ,  H01Q13/10

Abstract: A communication device includes a first near field communication (NFC) antenna configured to have a first resonance frequency, and a metal chassis forming part of an outer surface of the communication device. The metal chassis forms an auxiliary antenna, where the auxiliary antenna is configured to be powered by the first NFC antenna by electromagnetic induction and is also configured to have a resonance frequency substantially equal to the first resonance frequency.

公开(公告)号：US12191933B2

公开(公告)日：2025-01-07

申请号：US17453425

申请日：2021-11-03

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco Antonetti

IPC: H04B5/72 ,  G06Q20/20 ,  H01Q1/24 ,  H01Q1/38 ,  H01Q7/00 ,  H04B5/26

Abstract: A near-field communication antenna includes a conductive plane; and four slots in the conductive plane.

公开(公告)号：US20240235274A1

公开(公告)日：2024-07-11

申请号：US18403385

申请日：2024-01-03

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics Austria GmbH

Inventor： Bruno Tisserand ,  Oliver Regenfelder ,  Laurent Regnier ,  Martin Rampetsreiter ,  Christoph Chlestil

IPC: H02J50/60 ,  H02J50/20 ,  H02J50/80

CPC classification number: H02J50/60 ,  H02J50/20 ,  H02J50/80

Abstract: The present disclosure relates to an NFC device configured for wireless power transfer, the NFC device comprising an antenna, a frontend circuit coupled to the antenna, a microcontroller coupled to the frontend circuit, the microcontroller comprising an analog-to-digital converter. The analog-to-digital converter is configured to receive an analog amplitude and/or phase signal from the frontend circuit, and to convert the analog signal into a digital signal. The microcontroller is configured to process the digital signal in order to detect a variation in the amplitude and/or phase of the analog signal, so as to detect a change of impedance within the field of the NFC device.

公开(公告)号：US11770156B2

公开(公告)日：2023-09-26

申请号：US17651322

申请日：2022-02-16

Applicant: STMicroelectronics Austria GmbH ,  STMicroelectronics Razvoj Polprevodnikov D.O.O.

Inventor： Gustavo Jose Henriques Patricio ,  Anton Stem

IPC: H04B5/00 ,  H04W4/80 ,  H04W48/16

CPC classification number: H04B5/0031 ,  H04W4/80 ,  H04W48/16

Abstract: The disclosure relates to a modified NFC framing is used by a reader and selected devices during at least a part of the communication between the reader and the selected devices. The reader and the selected devices store modification rules for modifying the frames. Devices not storing those modification rules will discard the received modified frames.