发明名称 |
METHOD AND APPARATUS FOR IN-BAND SIGNALING USING PARASITIC RESISTANCES |
摘要 |
An apparatus for wireless power transfer comprises a coupler having a first resistance and configured to generate a voltage under influence of a time-varying magnetic field generated by a wireless power transmitter. The apparatus comprises a rectifier circuit configured to rectify the voltage. The apparatus comprises a switching circuit coupled to an output of the rectifier circuit and having a first state and a second state. A first amount of power dissipated by at least the first resistance and the rectifier circuit in the first state and a second amount of power dissipated by at least the first resistance and the rectifier circuit in the second state. The apparatus comprises a controller configured to toggle the switching circuit between the first state and the second state. A difference between the second and first amounts of power is differentiable by the wireless power transmitter. |
申请公布号 |
US2017047781(A1) |
申请公布日期 |
2017.02.16 |
申请号 |
US201615060459 |
申请日期 |
2016.03.03 |
申请人 |
QUALCOMM Incorporated |
发明人 |
Stanislawski Wojciech Grzegorz;Von Novak, III William Henry |
分类号 |
H02J50/12;H02J7/02 |
主分类号 |
H02J50/12 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus for wireless power transfer, comprising:
a coupler having a first resistance, the coupler configured to generate a voltage under influence of a time-varying magnetic field generated by a wireless power transmitter; a rectifier circuit configured to rectify the voltage; a switching circuit coupled to an output of the rectifier circuit and having a first state and a second state, a first amount of power dissipated by at least the first resistance and the rectifier circuit in the first state and a second amount of power dissipated by at least the first resistance and the rectifier circuit in the second state; and a controller configured to toggle the switching circuit between the first state and the second state, wherein a difference between the second amount of power and the first amount of power is differentiable by the wireless power transmitter. |
地址 |
San Diego CA US |