公开(公告)号：US20220131572A1

公开(公告)日：2022-04-28

申请号：US17078475

申请日：2020-10-23

Applicant: NXP B.V.

Inventor： Anthony Kerselaers

IPC: H04B5/00

Abstract: One example discloses a magnetic induction device, including: a transmitter configured to induce a magnetic signal in a structure; wherein the structure is coupled to a sub-structure; a controller configured to characterize the structure so as to identify a first frequency range of the magnetic signal that resonates with the structure; wherein the controller is configured to identify a second frequency range that resonates with the sub-structure; wherein the controller is configured to select a frequency for the magnetic signal within the first frequency range that has a harmonic frequency in the second frequency range; and wherein the transmitter is configured to transmit the magnetic signal into the structure at the selected frequency.

公开(公告)号：US11108437B1

公开(公告)日：2021-08-31

申请号：US16919815

申请日：2020-07-02

Applicant: NXP B.V.

Inventor： Anthony Kerselaers ,  Liesbeth Gommé

IPC: H04B5/02 ,  H04B5/00

Abstract: One example discloses a near-field device, including: a conductive housing physically coupled to the near-field device; a near-field antenna, having a first feed point and a second feed point, and including, a first inductive coil having a first end coupled to the first feed point, a second end coupled to the second feed point, and a connection point; a conductive plate capacitively coupled to the conductive housing, and coupled to the first end of the first inductive coil; a tuning circuit; a reference potential; wherein another end of each of the capacitance banks and another end of each of the resistance banks are coupled to the reference potential; wherein the connection point is galvanically coupled to the reference potential; and wherein the conductive housing is galvanically coupled to the reference potential.

公开(公告)号：US20210250065A1

公开(公告)日：2021-08-12

申请号：US16788542

申请日：2020-02-12

Applicant: NXP B.V.

Inventor： Anthony Kerselaers ,  Liesbeth Gommé

IPC: H04B5/00

Abstract: One example discloses a device including a near-field electromagnetic induction (NFEMI) antenna, including: a first inductive coil having a first end coupled to a first feeding connection and a second end coupled to a second feeding connection; a second inductive coil, having a first end coupled to the second end of the first inductive coil and a second end; wherein the second inductive coil is formed into a first surface; a third inductive coil formed into a second surface; wherein the first surface including the second inductive coil and the second surface including the third inductive coil are configured to form a first capacitance (C); wherein the third inductive coil includes a first end galvanically coupled to the second end of the second inductive coil; wherein the first inductive coil is configured to receive or transmit non-propagating quasi-static near-field magnetic induction signals; and wherein the second and third inductive coil are configured to receive or transmit non-propagating quasi-static near-field electric induction signals.

公开(公告)号：US10944447B1

公开(公告)日：2021-03-09

申请号：US16701543

申请日：2019-12-03

Applicant: NXP B.V.

Inventor： Anthony Kerselaers ,  Liesbeth Gommé

IPC: H04B5/00 ,  H04B17/336 ,  H04W4/80 ,  H04W72/08

Abstract: One example discloses a multi-channel near-field electromagnetic induction (NFEMI) device, including: a sub-channel controller configured to be coupled to a near-field magnetic antenna (H-field) and a near-field electric antenna (E-field) and configured to receive a message to be transmitted to a second near-field device in a near-field body-network through the near-field electric and magnetic antennas; wherein the sub-channel controller is configured to divide a narrow-band near-field channel into a set of sub-channels; and wherein the sub-channel controller is configured to calculate a signal-to-noise-ratio (SNR) for each sub-channel and select a sub-channel, from the set of sub-channels, for transmission of the message that has a higher SNR than another sub-channel in the set of sub-channels.

公开(公告)号：US10917773B1

公开(公告)日：2021-02-09

申请号：US16839086

申请日：2020-04-03

Applicant: NXP B.V.

Inventor： Anthony Kerselaers ,  Liesbeth Gommé

IPC: H04B5/00 ,  H04B17/20 ,  H01Q7/00 ,  H01Q1/24 ,  G01R29/10 ,  H04W4/80 ,  H04B5/02

Abstract: One example discloses a near-field wireless device, including: a near-field antenna having a first conductive surface and a second conductive surface; wherein the conductive surfaces are configured to carry non-propagating quasi-static near-field electro-induction (NFEI) signals; a tuning circuit coupled to the near-field antenna and having a set of tuning parameters; a controller coupled to the tuning circuit; wherein the controller is configured to monitor a loading of the near-field antenna; wherein the controller is configured to adjust the tuning parameters if the loading is different from a preselected loading; and wherein the controller is configured to set a user present status in response to a predefined threshold change in the set of tuning parameters.

公开(公告)号：US10917138B2

公开(公告)日：2021-02-09

申请号：US16260322

申请日：2019-01-29

Applicant: NXP B.V.

Inventor： Anthony Kerselaers

IPC: H04B5/00 ,  H02J50/40 ,  H02J50/50

Abstract: One example discloses a near-field communications device, including: an energy harvesting circuit configured to be coupled to a near-field antenna that is responsive to non-propagating quasi-static near-field energy; wherein the harvesting circuit is configured to harvest energy from the non-propagating quasi-static near-field energy; and wherein the harvesting circuit includes a harvesting filter configured to input a first set of near-field energy and output a second set of near-field energy; and wherein the second set of near-field energy is a sub-set of the first set of near-field energy.

公开(公告)号：US10862542B1

公开(公告)日：2020-12-08

申请号：US16567165

申请日：2019-09-11

Applicant: NXP B.V.

Inventor： Anthony Kerselaers ,  Liesbeth Gommé

IPC: H04B5/00

Abstract: One example discloses a near-field converter, including: a near-field magnetic antenna responsive to near-field magnetic signals; a near-field electric antenna responsive to near-field electric signals; wherein the converter is configured to, convert received near-field magnetic signals into and transmit as near-field electric signals; or convert received near-field electric signals into and transmit as near-field magnetic signals.

公开(公告)号：US10601467B1

公开(公告)日：2020-03-24

申请号：US16439884

申请日：2019-06-13

Applicant: NXP B.V.

Inventor： Liesbeth Gommé ,  Anthony Kerselaers

IPC: H04B5/00 ,  H04W12/06 ,  H04W4/80 ,  H04B17/318

Abstract: One example discloses a wireless device, including: a first near-field device, including a near-field receiver, configured to be coupled to a first surface; wherein the first near-field device is configured to receive a received near-field signal having a received signal strength (RSS); wherein the received near-field signal originates from a second near-field device having a near-field transmitter and configured to be coupled to a second surface; wherein the second near-field device is configured to generate a transmitted near-field signal having a transmitted signal strength (TSS); wherein the TSS of the transmitted near-field signal interacts with a third surface to transform into the RSS of the received near-field signal; and wherein the first near-field device is configured to translate a magnitude of the RSS to a distance of the first and/or second surfaces from the third surface.

公开(公告)号：US10546686B2

公开(公告)日：2020-01-28

申请号：US15069182

申请日：2016-03-14

Applicant: NXP B.V.

Inventor： Pieter Verschueren ,  Anthony Kerselaers

IPC: H01F38/14 ,  H01Q7/08 ,  H04B5/00 ,  H01F27/32 ,  H01Q1/44 ,  H01Q7/00 ,  H01F27/28 ,  H01Q1/27

Abstract: An antenna system is provided that is capable of transmitting and receiving using near-field magnetic induction (NFMI). The antenna system includes a non-magnetic metallic core, a ferrite shield, and at least one electrically conducting winding. The ferrite shield is positioned between the non-magnetic metallic core and the electrically conducting winding. The non-magnetic metallic core may be a battery. The ferrite material forms a low impedance path for the magnetic field lines and increases inductance, thus providing increased energy efficiency and transmission quality. The antenna system is suitable for use in space constrained battery powered devices, such as hear instruments including hearing aids and earbuds.

公开(公告)号：US10535925B2

公开(公告)日：2020-01-14

申请号：US15699065

申请日：2017-09-08

Applicant: NXP B.V.

Inventor： Anthony Kerselaers ,  Liesbeth Gommé

IPC: H01Q5/30 ,  H01Q1/27 ,  H01Q1/44 ,  H01Q5/307 ,  H01Q5/20 ,  H01Q1/38 ,  H01Q7/00

Abstract: Example antenna configured to be coupled to a first conductive structure having a first portion and a second portion, the antenna including: a second conductive structure having a first portion and a second portion; wherein the first portion of the second conductive structure is configured to be coupled to the first portion of the first conductive structure; a first feed point configured to be coupled to the second portion of the first conductive structure; wherein the first portion of the first conductive structure is configured to carry the RF signal current with a first current density; wherein the first portion of the second conductive structure is configured to carry the RF signal current with a second current density; wherein the first and second current densities are different.