公开(公告)号：US09391442B2

公开(公告)日：2016-07-12

申请号：US13837638

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Ryan Tseng ,  Sreenivas Kasturi ,  Edward Kenneth Kallal, III ,  Milorad Radovic ,  William H. Von Novak, III

IPC: H02H3/20 ,  H02J7/02 ,  H04B5/00 ,  H02J5/00 ,  H04B1/04 ,  H04B17/10

CPC classification number: H02H3/20 ,  H02J5/005 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/80 ,  H02J50/90 ,  H04B1/0466 ,  H04B5/0037 ,  H04B5/0093 ,  H04B17/103

Abstract: Aspects of a protection circuit and method are disclosed. A transmit circuit generates a power transmit signal for powering the transmit antenna to generate a wireless field sufficient for wirelessly charging a device. A detection circuit senses a strength of an electromagnetic field received by the transmit antenna and further configured to generate an sense signal indicating the strength of the electromagnetic field received by the transmit antenna. A power control circuit controls a switch based at least partly on the sense signal. The power control circuit can attenuate an electrical coupling between the transmit antenna and the transmit circuit such that the received electromagnetic field is inhibited from damaging the transmit antenna or the transmit circuit.

Abstract translation: 公开了保护电路和方法的方面。 发射电路产生用于为发射天线供电的功率发射信号，以产生足以对装置进行无线充电的无线电场。 检测电路感测由发射天线接收的电磁场的强度，并进一步被配置为产生指示由发射天线接收的电磁场的强度的感测信号。 功率控制电路至少部分地基于感测信号来控制开关。 功率控制电路可以衰减发射天线和发射电路之间的电耦合，使得接收的电磁场被禁止损坏发射天线或发射电路。

公开(公告)号：US09722448B2

公开(公告)日：2017-08-01

申请号：US14108235

申请日：2013-12-16

Applicant: QUALCOMM Incorporated

Inventor： Milorad Radovic ,  Gabriel Isaac Mayo

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

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J50/60 ,  H04B5/0037 ,  H04B5/0075 ,  H04B5/0093

Abstract: Aspects of a protection circuit and method are disclosed. An apparatus to transmit wireless power comprises a transmit antenna, a driver, a sensing circuit, and a control circuit. The transmit antenna generates a wireless field to charge devices. The driver powers the transmit antenna for generation of the wireless field. A power level of the wireless field is based on a power level of the driver. The sensing circuit senses wireless power received at the transmit antenna and generates a monitoring signal based on the sensed wireless power received at the transmit antenna. The control circuit controls the power level or inhibits the driver from powering the transmit antenna when the monitoring signal indicates that the transmit antenna is receiving wireless power from a foreign antenna.

公开(公告)号：US20140103869A1

公开(公告)日：2014-04-17

申请号：US14108235

申请日：2013-12-16

Applicant: QUALCOMM INCORPORATED

Inventor： Milorad Radovic ,  Gabriel Isaac Mayo

IPC: H02J7/02

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J50/60 ,  H04B5/0037 ,  H04B5/0075 ,  H04B5/0093

Abstract: Aspects of a protection circuit and method are disclosed. An apparatus to transmit wireless power comprises a transmit antenna, a driver, a sensing circuit, and a control circuit. The transmit antenna generates a wireless field to charge devices. The driver powers the transmit antenna for generation of the wireless field. A power level of the wireless field is based on a power level of the driver. The sensing circuit senses wireless power received at the transmit antenna and generates a monitoring signal based on the sensed wireless power received at the transmit antenna. The control circuit controls the power level or inhibits the driver from powering the transmit antenna when the monitoring signal indicates that the transmit antenna is receiving wireless power from a foreign antenna.

Abstract translation: 公开了保护电路和方法的方面。 发射无线电力的装置包括发射天线，驱动器，感测电路和控制电路。 发射天线产生无线场以对设备充电。 驱动器为发射天线供电以产生无线场。 无线电场的功率电平基于驱动器的功率电平。 感测电路感测在发射天线处接收的无线功率，并且基于在发射天线处接收的感测到的无线功率产生监测信号。 当监视信号指示发射天线正在从外部天线接收无线电力时，控制电路控制功率电平或禁止驱动器对发射天线供电。

公开(公告)号：US20140071571A1

公开(公告)日：2014-03-13

申请号：US13837638

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Ryan Tseng ,  Sreenivas Kasturi ,  Edward Kenneth Kallal, III ,  Milorad Radovic ,  William H. Von Novak, III

IPC: H02H3/20

CPC classification number: H02H3/20 ,  H02J5/005 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/80 ,  H02J50/90 ,  H04B1/0466 ,  H04B5/0037 ,  H04B5/0093 ,  H04B17/103

Abstract: Aspects of a protection circuit and method are disclosed. A transmit circuit generates a power transmit signal for powering the transmit antenna to generate a wireless field sufficient for wirelessly charging a device. A detection circuit senses a strength of an electromagnetic field received by the transmit antenna and further configured to generate an sense signal indicating the strength of the electromagnetic field received by the transmit antenna. A power control circuit controls a switch based at least partly on the sense signal. The power control circuit can attenuate an electrical coupling between the transmit antenna and the transmit circuit such that the received electromagnetic field is inhibited from damaging the transmit antenna or the transmit circuit.

Abstract translation: 公开了保护电路和方法的方面。 发射电路产生用于为发射天线供电的功率发射信号，以产生足以对装置进行无线充电的无线电场。 检测电路感测由发射天线接收的电磁场的强度，并进一步被配置为产生指示由发射天线接收的电磁场的强度的感测信号。 功率控制电路至少部分地基于感测信号来控制开关。 所述功率控制电路可以衰减所述发射天线和所述发射电路，使得所接收的电磁场损坏发射天线或发射电路抑制之间的电耦合。