FORWARD LINK SIGNALING WITHIN A WIRELESS POWER SYSTEM
摘要
The amplified RF output signal (515) of a power amplifier (510) is amplitude modulated by modulating the supply voltage/current of the amplifier. A control unit (522) receives data to be transmitted and a feedback signal (505) that corresponds to the sensed supply voltage and/or supply current. In response to these signals, the control unit (522) modulates the supply voltage/current of the power amplifier.