Simulation Study on Multi-dimensional Wireless Power Transmission System of MEMS Inside Human Body

The principle of wireless power transmission and the objections in practical application were introduced.Then a finite element model of the wireless power transformer was established.Based on this model,the influences of windings position and attitude angles on coupling coefficient were analyzed.The simulative results indicate that three-dimensional receiving coil can receive energy from different orientations and these three windings can complement each other efficiently in power transmission.Afterward,according to MEMS request for voltage,rectifying and stabilizing circuit was designed and fabricated.The results of this circuit indicate that the output is stable enough for the request of MEMS.