A numerical assessment of the human body effect in the transmission of wireless microphones

Many mobile devices, including wireless microphones, are operated in the near proximity of the human body that modifies radiation conditions and absorbs some of the power of the device and, therefore, introduces an additional loss (body loss) to the radio communication link. In this article, we characterize the body loss in wireless microphones over a wide frequency range spanning from the very high frequencies (235 MHz) to the super-high frequencies (6 GHz) using 3D numerical electromagnetic simulations of 3 realistic human anatomical models and for 2 microphone types (hand-held and body-worn).