【摘要】 在手机等无线供电平台应用中,阻抗匹配网络提高效率的方法在发送线圈和接收线圈间的耦合系数变化时无法达到最优。为此,提出了一种在离发送线圈一定高度处产生均匀磁场的发送线圈设计方法,通过并联多个同心圆线圈,并在每圈上并联一个电容,使每圈上电流的比例由电容值比例决定。经仿真验证,相比于传统的依靠每圈之间线间距不同的串联型平面螺旋线圈,该方法得到磁场均匀性更好。更多还原

【Abstract】 The impedance matching network can be used to optimize the efficiency of the wireless power transfer,if the coupling coefficient between the transmitting and the received coils are not variable. In order to achieving uniform magnetic filed which is produced by the transmitting coil,a new design method is proposed.A series of concentric circular turns are parallel connected with a capacitor connected in series with each turn.The current in each turn which is determined by the capacitor should be designed carefully. The new design is verified by the HFSS simulation. Compared with the traditional spiral coil which depends on the turn position distribution,the new design is better in achieving uniform magnetic field.更多还原