Yüksek Frekanslarda İnsan Derisinin Kablosuz Vücut Alan Ağlarına Etkisi

Abstract

Recent developments in intelligent low-power sensors, microelectronics, system-on-chip design, integrated circuits and wireless communication have allowed the realization of a Wireless Body Area Network (WBAN). A WBAN is a combination of miniaturized, low-power, invasive/non-invasive lightweight wireless sensor nodes that monitor the human body functions and the surrounding environment. In these networks various sensor nodes are attached on clothing or on the body or even implanted under the skin. The wireless network and the wide variety of sensors offer numerous new, practical and innovative applications to improve health care and the quality of life. With the help of WBAN the patient experiences a greater physical mobility and is no longer compelled to stay in the hospital. In this paper the skin communication channel is modelled considering the propagation of Electromagnetic (EM) waves in skin. The propagation characteristics are investigated using a theoretical approach. More specifically, the paper sets the theoretical background for examining the path loss of EM waves propagating in skin in the GHz range and determines the incurred path loss and Bit Error Rate (BER). The theoretical analysis and the simulation results prove the feasibility of wireless communication in the 30 GHz – 300 GHz band in skin and highlight several important aspects in this field.