Abstract
Wireless power transfer (WPT) is a non-contact way to achieve energy transmission between power supply and electrical equipment. The core of compressed sensing theory is to be able to sparse original data in a specific area. The corresponding sampling rate is determined according to the frequency of the signal used, but it does not utilize other characteristics and parameters of the signal itself. The whole system mainly uses the principle of magnetic resonance to realize the function of simultaneous interpreting of wireless energy and signal. Firstly, the audio signal is loaded into the high frequency band through the frequency modulation circuit, and the high frequency carrier wave is transmitted by the resonant coil through the power amplifier. Then, the receiving coil with the same resonant frequency receives the high-frequency carrier wave with high energy. One part of the receiving coil provides the appropriate DC voltage for the audio power amplifier through rectification and voltage stabilization, and the other part restores the audio signal through demodulation and filtering. Finally, the restored audio signal will sound through the audio amplifier.
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