公开(公告)号：US20230379003A1

公开(公告)日：2023-11-23

申请号：US18123855

申请日：2023-03-20

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Sujeet Milind Patole

IPC: H04B5/00

CPC classification number: H04B5/0043 ,  H04B5/0081

Abstract: Embodiments are disclosed for a low-frequency detection and ranging. In an embodiment, an apparatus comprises: an open electrode; an alternating current (AC) voltage source configured to supply an excitation voltage to the open electrode at an excitation frequency; a resonant circuit coupled to the open electrode, the resonant circuit configured to oscillate when an object is within a detection distance of the open electrode; one or more processors configured to: obtain time domain samples of an output voltage of the resonant circuit when the resonant circuit is oscillating; convert the time domain samples into frequency domain samples; for each frequency domain sample, determine an amplitude difference and a phase difference as compared to an amplitude and phase of the excitation voltage; and determine a material class of the object based on the amplitude difference and the phase difference.

公开(公告)号：US12184354B2

公开(公告)日：2024-12-31

申请号：US18123855

申请日：2023-03-20

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Sujeet Milind Patole

IPC: H04B5/73 ,  H04B5/26

Abstract: Embodiments are disclosed for a low-frequency detection and ranging. In an embodiment, an apparatus comprises: an open electrode; an alternating current (AC) voltage source configured to supply an excitation voltage to the open electrode at an excitation frequency; a resonant circuit coupled to the open electrode, the resonant circuit configured to oscillate when an object is within a detection distance of the open electrode; one or more processors configured to: obtain time domain samples of an output voltage of the resonant circuit when the resonant circuit is oscillating; convert the time domain samples into frequency domain samples; for each frequency domain sample, determine an amplitude difference and a phase difference as compared to an amplitude and phase of the excitation voltage; and determine a material class of the object based on the amplitude difference and the phase difference.

公开(公告)号：US11435467B2

公开(公告)日：2022-09-06

申请号：US16583564

申请日：2019-09-26

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Mohammad B. Vahid Far ,  Chunshu Li

IPC: G01S13/22 ,  G01S7/28 ,  H04B7/0413

Abstract: During operation, a transmitter in an electronic device may provide, to a transmission path, an electrical signal. This electrical signal may be divided by the power splitter into a first output electrical signal in a first output transmission path and a second output electrical signal in a second output transmission path, which may result in transmitting of the first wireless signal and the second wireless signal by antennas. Because the second output transmission path may include a delay element that provides a delay, the second wireless signal may be delayed relative to the first wireless signal. Moreover, N radar receivers in the electronic device may receive first wireless-return signals corresponding to the first wireless signal and second wireless-return signals corresponding to the second wireless signal. These wireless-return signals may be combined to create a virtual array MIMO radar having an antenna aperture size of 2N.

公开(公告)号：US20210096233A1

公开(公告)日：2021-04-01

申请号：US16583564

申请日：2019-09-26

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Mohammad B. Vahid Far ,  Chunshu Li

IPC: G01S13/22 ,  H04B7/0413 ,  G01S7/28

Abstract: During operation, a transmitter in an electronic device may provide, to a transmission path, an electrical signal. This electrical signal may be divided by the power splitter into a first output electrical signal in a first output transmission path and a second output electrical signal in a second output transmission path, which may result in transmitting of the first wireless signal and the second wireless signal by antennas. Because the second output transmission path may include a delay element that provides a delay, the second wireless signal may be delayed relative to the first wireless signal. Moreover, N radar receivers in the electronic device may receive first wireless-return signals corresponding to the first wireless signal and second wireless-return signals corresponding to the second wireless signal. These wireless-return signals may be combined to create a virtual array MIMO radar having an antenna aperture size of 2N.

公开(公告)号：US20190199137A1

公开(公告)日：2019-06-27

申请号：US15902875

申请日：2018-02-22

Applicant: Apple Inc.

Inventor： Bing Jiang ,  Martin Schauer ,  Indranil S. Sen ,  Jouya Jadidian ,  Mark D. Neumann ,  Mohit Narang ,  Vaneet Pathak ,  Yi Jiang

IPC: H02J50/23 ,  H02J50/10 ,  H01Q21/06 ,  H01Q9/04

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.

公开(公告)号：US20190027298A1

公开(公告)日：2019-01-24

申请号：US15658227

申请日：2017-07-24

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Vaneet Pathak ,  Martin Schauer ,  Cheung-Wei Lam ,  Darshan R. Kasar ,  Christopher S. Graham ,  Andro Radchenko

IPC: H01F27/28 ,  H02J50/10 ,  H02J7/02 ,  H01F38/14 ,  H01F27/36

Abstract: A shield for redirecting magnetic field generated from a plurality of transmitter coils includes a ferromagnetic structure divided into segments by a plurality of boundary regions, each segment comprises a first material having a first magnetic permeability and each boundary region comprises a second material having a second magnetic permeability lower than the first magnetic permeability, where the plurality of boundary regions are configured to resist a propagation of magnetic field from a first area of the ferromagnetic structure to a second area of the ferromagnetic structure, where the first area intercepts the magnetic field generated from at least one active transmitter coil of the plurality of transmitter coils.

公开(公告)号：US11799329B2

公开(公告)日：2023-10-24

申请号：US17096788

申请日：2020-11-12

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Vaneet Pathak ,  Martin Schauer ,  Cheung-Wei Lam ,  Darshan R. Kasar ,  Christopher S. Graham ,  Andro Radchenko

IPC: B60L53/63 ,  B60L53/67 ,  B60L7/00 ,  H02J50/70 ,  H01F27/28 ,  H02J50/10 ,  H01F38/14 ,  H01F27/36 ,  H02J50/40

CPC classification number: H02J50/70 ,  H01F27/2885 ,  H01F27/36 ,  H01F27/366 ,  H01F38/14 ,  H02J50/10 ,  H02J50/402

Abstract: A shield for redirecting magnetic field generated from a plurality of transmitter coils includes a ferromagnetic structure divided into segments by a plurality of boundary regions, each segment comprises a first material having a first magnetic permeability and each boundary region comprises a second material having a second magnetic permeability lower than the first magnetic permeability, where the plurality of boundary regions are configured to resist a propagation of magnetic field from a first area of the ferromagnetic structure to a second area of the ferromagnetic structure, where the first area intercepts the magnetic field generated from at least one active transmitter coil of the plurality of transmitter coils.

公开(公告)号：US20220035001A1

公开(公告)日：2022-02-03

申请号：US16941810

申请日：2020-07-29

Applicant: Apple Inc.

Inventor： Harsha Shirahatti ,  Sujeet Milind Patole ,  Jouya Jadidian ,  Mikheil Tsiklauri ,  Shun Liu ,  Vaneet Pathak ,  Lei Wang ,  Kumar Gaurav Chhokra

IPC: G01S7/41 ,  G01S13/08 ,  G01C5/06 ,  G01C25/00

Abstract: An electronic device may utilize various methods or systems to determine whether the electronic device is indoors or outdoors. The electronic device transmits wireless signals (e.g., radio detection and ranging (RADAR) signals). The electronic device receives reflections of the wireless signals. Using these received reflections of the wireless signals, the electronic device determines whether a power amplitude of the reflections is greater than or equal to a threshold value. In response to a determination that the power amplitude is not greater than or equal to the threshold value, the electronic device operates in an outdoor mode or an indoor mode.

公开(公告)号：US10714983B2

公开(公告)日：2020-07-14

申请号：US15902875

申请日：2018-02-22

Applicant: Apple Inc.

Inventor： Bing Jiang ,  Martin Schauer ,  Indranil S. Sen ,  Jouya Jadidian ,  Mark D. Neumann ,  Mohit Narang ,  Vaneet Pathak ,  Yi Jiang

IPC: H02J50/12 ,  H02J50/23 ,  H02J50/10 ,  H01Q9/04 ,  H01Q21/06 ,  H04B5/00 ,  H02J50/80

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.

公开(公告)号：US10418863B1

公开(公告)日：2019-09-17

申请号：US16212411

申请日：2018-12-06

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Steven W. Cabral ,  Vaneet Pathak

IPC: H02J50/90 ,  H02J50/10 ,  H02J7/00 ,  H02J50/60 ,  H02J7/02

Abstract: A mobile charging device may be used to move a battery or a power cord to a target device. The target device may be a vehicle or other equipment with a battery. Power from the power cord or battery in the charging device may be used to provide power to the target device to recharge the battery in the target device. The charging device may couple a power cord to the target device, may couple a connector in the charging device to the target device, or may use a wireless power transfer element such as a coil antenna to transfer power wirelessly to the target device. Sensors may be used to facilitate alignment between the charging device and target device. Sensors may also be used to dynamically detect and avoid foreign objects in the path of the charging device.