无线电能传输发射模块优化设计

摘要

In order to solve the existing problem of radio transmission technology about short distance transmission and low efficiency,the resonant coupling technology was applied to radio transmission. On the basis of the design method of the existing resonant coupling transmission module,the impedance matching and the antenna to optimize technology are used in the design of transmitter module .By the theoretical analysis of the transmitter coil parameters, the optimal design of the transmitter coil is proposed. From the circuit point of view,the relationship between the former level transmitter circuit and transmitter coil are given. On the basis of ADS software,the power amplifier circuit is designed by applying load traction, which can meet the requirements of test. The relationship between the output impedance and output power can be obtained by the simulation experiment, by combining with the Smith chart, the optimum source impedance and optimal load impedance can be identified, and then the maximum output power is given when the impedance is matching,which can provide a basis for the radio transmission technology to continue research.%为了解决现有无线电能传输技术传输距离近、效率低等问题，将谐振耦合技术应用到无线电能传输中。结合现有谐振耦合发射模块设计方法，将阻抗匹配与天线优化技术应用于发射模块设计中。通过对发射线圈参数的理论分析，提出了发射线圈优化设计方案。从电路角度给出了前级发射电路与发射线圈之间的关系，利用ADS软件，应用负载牵引法设计了满足实验要求的功率放大电路。通过实验仿真得到了功率放大电路输出阻抗与输出功率之间的关系，结合史密斯圆图找出了最佳功率源阻抗和最佳线圈阻抗，并给出了阻抗匹配时的最大输出功率，为无线电能传输技术的继续研究提供一定的依据。