Abstract
Background: Wireless body area network (WBAN) including bio-sensor network is expected to be a new communication system in ubiquitous society including medicine or point of care from the view point of easy connection of equipment．In this case, reduction of risk of information leak to a third party through special propagation is necessary. Human body communication (HBC) through the human body is a good solution for this problem. On the other hand, radio frequency (RF) communication should be carried out with a small power from the viewpoint of minimal invasion. Thus, high efficiency signal injection into human body is necessary. This paper provides the RF signal injection method with automatic impedance matching circuit operated by the use of Peripheral Interface Controller (PIC©)) for this purpose. Keywords: Wireless BAN, human body communication, sensor network, point of care communications, PIC, impedance matching.
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