Signal Path Loss in Human Arm during Galvanic-Coupling Intra-body Communication

摘要

This study analyzed signal path loss during galvanic-coupling intra-body communication through the application of a four-terminal circuit and a finite-element model. The effect of the interface circuit of an LC series-parallel circuit that injects the signal into the human body was also examined. Without the LC series-parallel circuit, the attenuation of the transmitted signal was minimized to within a range of 1–5 MHz. The addition of the LC series-parallel circuit improved the attenuation by 2.5–8.8 dB.