Human body communication technology with human biological tissue as a communication medium provides a new way for wireless communication. However, the current research on human body communication technology is limited to single body communication. This paper expands the application of human body communication technology through the study of two-person handshake communication. First, the impedance and size of the transmitter and receiver were discussed to reduce the influence of the transmitter and receiver on path loss. Then, the effects of palm contact areas on path loss was analyzed in the ultra-wide band (UWB) high and human body communication (HBC) low bands. Finally, the safety of human communication technology was evaluated based on whether the local maximum specific absorption rate (SAR) reached the international limit. In this paper, the path loss was calculated at different communication distances with the optimal parameters of the transmitter and receiver. Under the same communication distance, with the decrease in the contact area of two people’s palms, the path loss of UWB and HBC bands gradually decreases. By comparing SAR values in different frequency bands, it was found that communication through the human body is safe, and the SAR in HBC is smaller than that in UWB. Furthermore, it is less affected by changes in the palm contact area.

With the development of body area network technology and brain neuroscience, the study of electroencephalogram signals has been increasingly emphasized by academics. However, more research on electrocorticography (ECoG) still needs to be carried out. In this study, the communication performance of ECoG signal transmission via the human body and the influence of port structure on their transmission are thoroughly investigated. First, we use the finite difference time domain method to model the head system accurately in conjunction with the electromagnetic properties of human tissues, which reveals the multipath propagation phenomenon in communication. Second, based on our previous research results, we compare the system bit error rate (BER) under phase shift keying (PSK) and frequency shift keying (FSK) modulation modes and further explore the link budget of the system under these two modulation modes. Finally, we analyze the potential impact of the transceiver structural parameters on the signal transmission characteristics. The results show that the power delay in the communication link exhibits a second-order exponential decay function distribution and that the inter-path delay and delay spread follow a Weibull distribution. Under certain BER conditions, PSK reduces the signal-to-noise requirement by 3.2 dB compared to FSK modulation, which is more suitable for head-end channel transmission. In addition, variations in the size and angle of the electrode disks at the transmitter and receiver have little effect on the transmission results.