In this paper we developed a body area propagation model by considering an infinite circular lossy cylinder instead of a human body and solving the Helmholtz equations inside and around the cylinder. The wave propagations around and inside the body have been studied for line source, point source, and plane wave excitations.
Keshmiri, F., Fort, A., & Craeye, C. (2009). Analysis of wave propagation for BAN applications. 2009 3rd European Conference on Antennas and Propagation. EuCAP 2009, p. 709-712. https://hdl.handle.net/2078.5/221269