公开(公告)号：US10561049B2

公开(公告)日：2020-02-11

申请号：US15793797

申请日：2017-10-25

Applicant: Integrated Device Technology, Inc.

Inventor： Alfredo Saab ,  David Wilson

IPC: H05K9/00 ,  H04B5/00

Abstract: An EMI shield for a wireless power transmitter is presented. The EMI shield includes a patterned metallic layer that when positioned over a transmitting coil of the wireless power transmitter capacitively couples to the transmitting coil to capture electromagnetic radiation while allowing magnetic power to pass. In some embodiments, the patterned metallic layer may be a comb filter.

公开(公告)号：US20190109499A1

公开(公告)日：2019-04-11

申请号：US16154665

申请日：2018-10-08

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus Smith ,  Stefan Maireanu ,  Haiwen Jiang ,  David Wilson

IPC: H02J50/60 ,  H02J50/12 ,  H02M3/158 ,  H02J50/70

Abstract: In accordance with some embodiments of the present invention, a method of determining a Q-factor in a transmit circuit with a resonant circuit includes setting a system voltage; performing a coarse scan to determine a course resonant frequency; performing a fine scan based on the course scan to determine a resonant frequency; performing a final measurement at the resonant frequency to determine an average system voltage and an average peak voltage of the resonant circuit; calculating a Q parameter from the average system voltage and the average peak voltage; and calculating the Q-factor from the Q parameter.

公开(公告)号：US10355525B2

公开(公告)日：2019-07-16

申请号：US16024487

申请日：2018-06-29

Applicant: Integrated Device Technology, Inc.

Inventor： Manjit Singh ,  Siamak Bastami ,  David Wilson

IPC: H02J5/00 ,  H02J7/02 ,  H04B5/00 ,  H02J50/10 ,  H02J50/20 ,  H02J50/60

Abstract: An inductive wireless power transfer device comprises a transmitter that comprises a transmit coil configured to generate a wireless power signal to a coupling region in response to an input voltage, and a modulator configured to modulate the wireless power signal and encode data with the wireless power signal to establish a back-channel communication link from the transmitter to a receiver. An inductive wireless power receiving device comprises a receiver that comprises a receive coil configured to generate a time varying signal in response to receiving a modulated wireless power signal from a transmitter in a coupling region, and a demodulator configured to demodulate the modulated wireless power signal from an established back-channel communication link from the transmitter to a receiver. Related inductive wireless power transfer systems and methods for back-channel communication from the transmitter to the receiver of an inductive wireless power transfer system are disclosed.

公开(公告)号：US10014721B2

公开(公告)日：2018-07-03

申请号：US14594064

申请日：2015-01-09

Applicant: Integrated Device Technology, Inc.

Inventor： Manjit Singh ,  Siamak Bastami ,  David Wilson

IPC: H04B5/00 ,  H02J50/10 ,  H02J50/20 ,  H02J7/02 ,  H02J50/60 ,  H02J5/00

CPC classification number: H02J50/10 ,  H02J5/005 ,  H02J7/025 ,  H02J50/20 ,  H02J50/60 ,  H04B5/0037 ,  H04B5/0068 ,  H04B5/0081

Abstract: An inductive wireless power transfer device comprises a transmitter that comprises a transmit coil configured to generate a wireless power signal to a coupling region in response to an input voltage, and a modulator configured to modulate the wireless power signal and encode data with the wireless power signal to establish a back-channel communication link from the transmitter to a receiver. An inductive wireless power receiving device comprises a receiver that comprises a receive coil configured to generate a time varying signal in response to receiving a modulated wireless power signal from a transmitter in a coupling region, and a demodulator configured to demodulate the modulated wireless power signal from an established back-channel communication link from the transmitter to a receiver. Related inductive wireless power transfer systems and methods for back-channel communication from the transmitter to the receiver of an inductive wireless power transfer system are disclosed.

公开(公告)号：US20150115735A1

公开(公告)日：2015-04-30

申请号：US14594064

申请日：2015-01-09

Applicant: Integrated Device Technology, Inc.

Inventor： Manjit Singh ,  Siamak Bastami ,  David Wilson

IPC: H02J5/00 ,  H04B5/00

CPC classification number: H02J50/10 ,  H02J5/005 ,  H02J7/025 ,  H02J50/20 ,  H02J50/60 ,  H04B5/0037 ,  H04B5/0068 ,  H04B5/0081

Abstract: An inductive wireless power transfer device comprises a transmitter that comprises a transmit coil configured to generate a wireless power signal to a coupling region in response to an input voltage, and a modulator configured to modulate the wireless power signal and encode data with the wireless power signal to establish a back-channel communication link from the transmitter to a receiver. An inductive wireless power receiving device comprises a receiver that comprises a receive coil configured to generate a time varying signal in response to receiving a modulated wireless power signal from a transmitter in a coupling region, and a demodulator configured to demodulate the modulated wireless power signal from an established back-channel communication link from the transmitter to a receiver. Related inductive wireless power transfer systems and methods for back-channel communication from the transmitter to the receiver of an inductive wireless power transfer system are disclosed.

Abstract translation: 感应无线电力传输装置包括发射机，发射机包括被配置为响应于输入电压而向耦合区域产生无线功率信号的发射线圈，以及配置成调制无线功率信号并用无线功率信号对数据进行编码的调制器 以建立从发射机到接收机的后向信道通信链路。 感应式无线电力接收装置包括：接收机，其包括接收线圈，其被配置为响应于从耦合区域中的发射机接收调制的无线电力信号而产生时变信号;以及解调器，被配置为解调来自 从发射机到接收机的建立的后向信道通信链路。 公开了相关的感应式无线电力传输系统和用于从感应无线电力传输系统的发射机到接收机的后向信道通信的方法。

公开(公告)号：US10797535B2

公开(公告)日：2020-10-06

申请号：US16154665

申请日：2018-10-08

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus Smith ,  Stefan Maireanu ,  Haiwen Jiang ,  David Wilson

IPC: H02J50/60 ,  H02J50/70 ,  H02M3/158 ,  H02J50/12 ,  H02M3/156

Abstract: In accordance with some embodiments of the present invention, a method of determining a Q-factor in a transmit circuit with a resonant circuit includes setting a system voltage; performing a coarse scan to determine a course resonant frequency; performing a fine scan based on the course scan to determine a resonant frequency; performing a final measurement at the resonant frequency to determine an average system voltage and an average peak voltage of the resonant circuit; calculating a Q parameter from the average system voltage and the average peak voltage; and calculating the Q-factor from the Q parameter.

公开(公告)号：US10401443B1

公开(公告)日：2019-09-03

申请号：US15903832

申请日：2018-02-23

Applicant: Integrated Device Technology, Inc.

Inventor： David Wilson

IPC: G01R33/10 ,  H02J50/10 ,  G01R33/24

Abstract: A system for mapping magnetic fields around a transmission coil is presented. The method includes selecting a selected induction loop from an array of selectable induction loops arranged adjacent the transmission coil, detecting current from the selected induction loop, the current being generated by a magnetic field from a transmission coil, to obtain measured values; and comparing measured values with expected values.