Abstract

The technology of wireless power and information synchronous transmission (WPIT) broadens the application scenario of the system. In this paper, the power transmission channel and information transmission channel of WPIT system are modeled and analyzed in detail. Frequency division multiplexing technology is adopted, and different frequency carriers are used for power and information transmission. The composite circuit of power and information transmission is introduced, and the function of each element of the circuit is explained in detail. Furthermore, the methods of signal modulation and demodulation are given. In order to realize the decoupling design of power and information transmission circuit, the crosstalk between power and information carrier is discussed. Then, the channel of power and information transmission are given respectively to analyze the power transmission performance and communication transmission gain. It provides guidance for the parameter design of information transmission circuit. Finally, an experimental prototype is built, with an output power of 200W and a data transmission rate of 200kbps.

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