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Human body communication (HBC) is a wireless transmission method that utilizes the human body as part of the transmission medium. A signal is transmitted by weak electric current through the human body and by capacitive coupling between transmitter, receiver, human body, and floor. Capacitive coupling with the floor is often included in the transmission models of HBC; however, its contribution is...
Human body communication (HBC) is a wireless transmission method that utilizes the human body as part of the transmission medium. In HBC, a high-frequency signal is transmitted by a current flowing through the body surface and via the near-field electric field around it. Due to the lack of specific equipment and tools to measure HBC transmission characteristics, HBC systems are still in the development...
Human body communication (HBC) is a wireless communication method that uses human body as part of the transmission medium. It uses electrodes instead of antennas to generate electric field around the human body. This electric field forms capacitive couplings between transmitter, receiver, human body, and surrounding environment. Transmission from a transmitter on user's wrist to an off-body receiver...
In Human Body Communication (HBC), electrodes are equivalent to antennas in other wireless communication. Transmission from a transmitter worn on the wrist to an off-body receiver touched by the subject's finger at frequency of 10 MHz was investigated. The received signal voltage was measured for transmission electrodes of several different dimensions and electrode distances. The results were compared...
Ground loop through the floor is often modeled in the transmission model of Human Body Communication (HBC). This paper reports evaluation of ground loop through the floor in HBC between two subjects shaking their hands, and HBC between a subject and a stationary receiver on the floor. Subjects wore a transmitter or a receiver on the wrist. Received signal strength was measured on carpet-covered aluminum...
When a transmitter for human body communication is worn by a human user, this transmitter-human body system can be regarded as a signal source as viewed from a receiver that is in contact with the human body. We evaluated the equivalent output impedance of this signal source, which is an important parameter for front end design of a receiver. The impedance was capacitive and the value was in the order...
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