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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...
We have proposed body area networks using magnetic coupling between coils worn on an arm, and confirmed that the transmission characteristics were improved more than 20 dB compared with those of the conventional human body communication using electrodes in contact with the body. However, the arm will be bent with various angles in daily life. In this paper, electromagnetic characteristics such as...
We have proposed and investigated body area networks using magnetic coupling between coils worn on an arm, and confirmed that the transmission characteristics were improved more than 20 dB compared with those of the conventional human body communication using electrodes in contact with the body. However, the arm will be bent with various angles in daily life. In this paper, transmission characteristics...
We have proposed body area networks using magnetic coupling between coils worn on an arm, and confirmed that the transmission characteristics were improved more than 20 dB compared with those of the conventional human body communication using electrodes in contact with the body. However, the arm will be bent with various angles in daily life. In this paper, transmission characteristics between the...
In this paper, a half-sized unbalanced dipole antenna with fan-shaped and trapezoidal radiators on a printed circuit board was proposed. The VSWR and radiation patterns of the proposed antenna were investigated. As a result, the VSWR characteristics less than 2.0 and relative bandwidth of 110 % over the frequency band of 3.1 GHz to 10.8 GHz from the experiments were obtained from a measurement. As...
In this study, we employed a realistic human arm model based on the MRI data, provided by NICT, for the investigation of the transmission characteristics S21, electromagnetic field distributions and specific absorption rate (SAR) in body area communication using electromagnetic resonance coupling. As a result, it is found that the transmission characteristics obtained from the models employing the...
Human body communication is expected as a new human interface for communications among several persons. Thus, it is necessary to analyze the transmission characteristics between human bodies. In this paper, we compared the transmission characteristics between transmitter and receiver in the viewpoint of contact situation between two bodies. Moreover, the effect of receiver position on transmission...
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