Research On Wireless Transmission Of Signal And Energy Based On Magnetic Resonance

The discovery of electromagnetic wave lays the foundation for wireless transmission.Today,wireless communication technology has been very mature,and the application of wireless energy transmission has gradually become the dominant direction of electromagnetic research.In recent years,with the rapid development of wireless power transmission technology,many products have emerged in the commercial field.For example,mobile phone wireless charging technology to idle electromagnetic energy reuse technology.The purpose of this paper is to design a wireless power system model and realize the function that wireless power and signal can be multiplexed and transmitted by utilizing the characteristic that electromagnetic wave can carry information and energy.Firstly,by analyzing the advantages and disadvantages of the models and basic principles of several popular wireless transmission systems,the magnetic resonance principle is chosen as the research basis.After consulting a large number of references,we decided to build a wireless multiplexing transmission system with a target transmission frequency of 13.56 MHz.This system is supported by the core theory of antenna equivalent thought and circuit matching theory.By equivalent circuit processing of fixed size coil antenna,and designing matching circuit,the coil antenna can work at the target frequency.In this process,the matching model,signal and energy transmission difficulty of transmission antenna is also different because of different equivalent ways.When the wireless transmission system has been validated effectively,the experiment summarizes and extends to the experiment of wireless power collection.Based on a large number of idle electromagnetic signals in the existing phenomenal environment space,a new structure model of wireless power collection is proposed according to the references and the existing equipment foundation of the laboratory platform.The longitudinal comparison with the simulation results is made,and the reasons are analyzed.