Aiming at problem that application of human-body communication technology in wearable devices lack of accurate theoretical analysis method

an equivalent circuit analysis method is proposed. Human tissue ’communication channel is seen as an analysable impedance circuit

channel gain of human-body communication is obtained by analyzing and calculating on circuit. On this basis

human-body communication model is established by using FEM simulation software HFSS

difference of channel gain between equivalent circuit analysis method and simulation results is less than 1 d B. Simulation results show that the analysis method can accurately represent characteristic of human-body ’s communication channel in wearable device and improves analysis method of human-body communication technology for wearable device.