Title :
Rules of thumb for predicting path loss in body coupled communication channels
Author :
Linnartz, Jean-paul
Author_Institution :
Philips Res., Eindhoven, Netherlands
Abstract :
In Body-Coupled Communication, a signal propagates as an Electric Field around the human body. It can be generated and picked-up by a capacitive transducer near the skin. This paper proposes approximate expressions for the path loss in such channels and compares these with more accurate calculations of an equivalent circuit. In particular, the authentication use case is addressed of a transmit tag in the immediate vicinity of the body, e.g. in a wallet, and a reader tag at some distance from the human, e.g. near a hand reaching out.
Keywords :
biomedical transducers; body sensor networks; capacitive sensors; electric fields; radiowave propagation; telecommunication channels; capacitive transducer; electric field; equivalent circuit; human body-coupled communication channel; path loss prediction; signal propagation; Approximation methods; Bridge circuits; Capacitance; Decision making; Impedance; Integrated circuit modeling; Propagation losses;
Conference_Titel :
Communications and Vehicular Technology in the Benelux (SCVT), 2013 IEEE 20th Symposium on
Conference_Location :
Namur
DOI :
10.1109/SCVT.2013.6736009