Magnetic human body communication based on double-inductor coupling

This paper proposes a new technique for Human Body Communication (HBC) that uses the magnetic coupling in transmitter and receiver. A discussion about the presence of parasitic paths, when magnetic coupling is used in the transmitter, and electrical coupling is used in the receiver is presented; showing that the technique presented here, reduces the influence of the surrounding environment at the same time that simplifies the conventional reception schemes. In addition, a physical-based model is presented, obtaining a good model-experiment correlation up to 20 MHz. This results suggest the possibility to use the double-inductor coupling technique for the HBC channel characterization, contributing in the design of portable applications for communications systems.