Study on the Coupling Performances of the Wireless Transmission System of the MEMS Indise Human Body

The principles and constitutions of the wireless transmission system of the MEMS inside human body are introduced.Based on mutual inductance,four compensatory model and mathematical differential equations are established.With Matlab simulation and calculation are carry through,the influences,such as the load,the work frequency on the reflected ipedance,and coupling coefficient k,the coils' resistance on the system performance,are studied.The results show the biggerr the coupling coefficient becomes,the increaser the system transmission efficiency;prior to the secondary coil resistance,the primary coil resistance has more imortant effect on the system transmission efficiency.So the smaller the primary coil resistance becomes,the better the system performance and transmission efficiency.