Parametric study of ground reflections and diversity techniques effect on body-worn VHF/UHF antenna performance

This paper presents numerical investigations of various body-worn antennas and their characteristics when placed at different positions on the body in the band 100–1000 MHz. The parametric study conducted includes the use of multiple elements placed at various locations on the body to investigate the effect of diversity on increasing antenna coverage area. An important factor that is usually neglected when analysing antenna systems used in outdoor or indoor environments is the effect of ground presence and hence the reflections created by the ground on the antenna radiation performance which is analysed and numercially investigated in this paper.