In this paper, radio signal propagation characteristics for ultra wideband (UWB) signal is discussed in a wireless body area network (WBAN) context. The studied system approach considers on-body communications, which, however, is affected also by the in-body parts. Multipath signal components could propagate both on-body and inbody. Depending on the sensor node installations and the tissue types and volumes in the vicinity of them, radio signals propagate in the environment differently. Thus,

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... ssues, and especially highly conductive implants underneath the skin could also contribute to on-body propagation characteristics. The following discussion is based on the research carried out at