Channel modeling and characterization of capacitive coupling communication within a metal cabinet

Abstract

An increasing number of various sensors in metallic environment such as vehicle, spacecraft and industrial equipment has contributed to the application of capacitive coupling communication technology, which is considered to be more useful compared with wired communication or traditional wireless communication. In this study, the composition and structure of the communication system were proposed firstly. Then the channel transmission characteristics with different electrode parameters were obtained using finite element simulation model. Moreover, vector network analyzer was used to test the path loss for verifying the simulation findings. The experimental results are consistent with the simulation results, and showed that the transmission gain of the system varied with the electrode parameters. This study can provide theoretical foundation and experimental support for capacitive coupling communication in a metallic environment, and has great significance for promoting the transceiver design and system optimization in the future research.

Using differential transmission to solve the problem of signal leakage in capacitive coupling communication in metal cabinet

“…In this paper, ANSYS Maxwell simulation software is used to establish a three-dimensional model of inter-carrier communication in a closed metal cabin based on quasi-static electric field coupling, and the electric field simulation is carried out using this model. In terms of parameter setting, this paper [10] changed the channel setting on the basis of common parameters and added the analysis of single channel, The model is shown in Figure 2.2. It can be seen that when there is no metal channel, there is only one circuit of the shell in the closed metal cabin, and the complete signal transmission path cannot be established.…”