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公开(公告)号：US08559873B2
公开(公告)日：2013-10-15
申请号：US12916352
申请日：2010-10-29
CPC分类号： H04B5/0037 , H02J7/025 , H02J17/00 , H02J50/12 , H02J50/80 , H03F1/0211 , H03F3/24 , H03F2200/15 , H03F2200/321 , H03F2203/21193
摘要： Exemplary embodiments are directed to forward link signaling. A method may include modulating an input bias signal of a power amplifier according to data to be transmitted on a wireless power transmit signal. The method may further include modulating an amplitude of the wireless power transmit signal generated by the power amplifier in response to the modulated input bias signal.
摘要翻译： 示例性实施例涉及前向链路信令。 一种方法可以包括根据要在无线功率发射信号上发送的数据来调制功率放大器的输入偏置信号。 该方法可以进一步包括响应于调制的输入偏置信号来调制由功率放大器产生的无线功率发射信号的幅度。
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公开(公告)号：US09136914B2
公开(公告)日：2015-09-15
申请号：US12641219
申请日：2009-12-17
CPC分类号： H04B5/0056 , G06K7/0008
摘要： Exemplary embodiments are directed to wireless power transfer. Energy from a transmit antenna is coupled to internal signals on a transmitter. An impedance measurement circuit generates an impedance indication signal for indicating an impedance difference between the coupled internal signals by comparing them. A controller samples the impedance indication signal and determines digital signaling values responsive to changes in the impedance indication signal. The impedance measurement circuit measures one or more of magnitude difference of the internal signals, phase difference of the internal signals, and changes in power consumed by an amplifier coupled between the RF signal and the transmit antenna. A transmitter generates the electromagnetic field with a transmit antenna responsive to a Radio Frequency (RF) signal to create a coupling-mode region within a near field of the transmit antenna.
摘要翻译： 示例性实施例涉及无线功率传输。 来自发射天线的能量耦合到发射机上的内部信号。 阻抗测量电路通过比较它们来产生用于指示耦合的内部信号之间的阻抗差的阻抗指示信号。 控制器对阻抗指示信号进行采样，并根据阻抗指示信号的变化确定数字信号值。 阻抗测量电路测量内部信号的幅度差异，内部信号的相位差和耦合在RF信号与发射天线之间的放大器消耗的功率变化中的一个或多个。 发射机利用射频（RF）信号产生具有发射天线的电磁场，以在发射天线的近场内产生耦合模式区域。
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公开(公告)号：US09853478B2
公开(公告)日：2017-12-26
申请号：US13030045
申请日：2011-02-17
摘要： Exemplary embodiments are directed to detection and validation of wirelessly chargeable devices positioned within a charging region of a wireless power transmitter. A device may include a wireless power transmitter configured detect a change in at least one parameter at the transmitter. The transmitter may further be configured to determine whether at least one valid chargeable device is positioned within a charging region of the transmitter upon detecting the change in the at least one parameter.
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