公开(公告)号：US20190305824A1

公开(公告)日：2019-10-03

申请号：US16371622

申请日：2019-04-01

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco ANTONETTI

IPC: H04B5/00 ,  H01Q1/38 ,  H01Q7/00

Abstract: An electronic device includes a back cover, a display, a middle frame sandwiched between the display and the back cover, and a near field communications (NFC) antenna incorporated within the middle frame. An electronic board is positioned within the middle frame, and includes an NFC controller and a matching network coupled to the NFC controller. The matching network is configured to match impedances between the NFC antenna and the NFC controller.

公开(公告)号：US20230387965A1

公开(公告)日：2023-11-30

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: H04B5/00 ,  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.

公开(公告)号：US20220149895A1

公开(公告)日：2022-05-12

申请号：US17585005

申请日：2022-01-26

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco ANTONETTI ,  Thomas POETSCHER

IPC: H04B5/00 ,  H02J50/80 ,  H02J50/20 ,  H01Q7/00 ,  H02J7/02

Abstract: An antenna device is formed by a first electrically conductive spiral having a first end connected to a first node and a second end connected to a second node, and a second electrically conductive spiral having a first end connected to the second node and a second end connected to a third node. The first and second nodes are configured for connection to an NFC driver circuit, with the first electrically conductive spiral forming an antenna for near-field communication. The first and third nodes are configured for connection to a wireless power charging driver circuit, with the first electrically conductive spiral and second electrically conductive spiral forming an antenna for wireless power charging.

公开(公告)号：US20210374365A1

公开(公告)日：2021-12-02

申请号：US17332405

申请日：2021-05-27

Applicant: STMicroelectronics Austria GmbH

Inventor： Gustavo Jose Henriques Patricio ,  Oliver Regenfelder ,  Ulrich Herrmann ,  Thomas Poetscher

IPC: G06K7/10 ,  H04B5/00 ,  G06K19/07

Abstract: An embodiment method comprises transmitting a reader carrier signal from a contactless reader to a contactless device, receiving by the reader, a device modulated carrier signal from the device, the device modulated carrier signal having a carrier frequency, preferably turning off by the reader, the transmission of the reader carrier signal during reception of the device modulated carrier signal, and after having turned off the transmission of the reader carrier signal, determining by the reader the presence or the absence at the reader's antenna of a modulated carrier signal having at the reader's antenna the carrier frequency with a tolerance, without relying on the data content of the modulated carrier signal.

公开(公告)号：US11043751B2

公开(公告)日：2021-06-22

申请号：US16180744

申请日：2018-11-05

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco Antonetti

IPC: H01Q19/00 ,  H01Q13/10 ,  H04W4/80 ,  H01Q7/00 ,  H01Q1/38 ,  H04B5/00

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：US20200295804A1

公开(公告)日：2020-09-17

申请号：US16809757

申请日：2020-03-05

Applicant: STMicroelectronics Austria GmbH

Inventor： Francesco ANTONETTI ,  Thomas POETSCHER

IPC: H04B5/00 ,  H02J50/20 ,  H02J50/80 ,  H02J7/02 ,  H01Q7/00

Abstract: An antenna device for use with a wireless power charging operation and a near-field communication (NFC) operation is formed sets of electrically conductive loops. The sets include a first set of loops configured to form a NFC antenna and a second set of loops. The first and second sets of loops together are configured to form a wireless power charging antenna.

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.