基于波导耦合型无线人体通信技术研究

Study of wireless human communication technology based on waveguide coupling

为了研究无线人体通信中信道的特征及其影响因素,建立了五层组织手臂通信模型,并据此设计了两种基于空气介质和FR-4介质的收发器。采用基于FDTD算法的CST软件进行了仿真分析和实验测试。结果表明,两种通信模型中适于人体通信的频段均在630MHz^1200MHz范围内,且在700MHz附近人体通信信道损耗最小;通过改变收发机的结构参数会引起人体通信信道内损耗的变化。

In order to analyze the characteristics and the influence factors of the wireless channels in human communication,five layer organizational arm communication model is established,and two kinds of transceiver based on air medium and FR-4 medium are designed. The models are verified by CST software based on FDTD algorithms and the experimental test. The results show that 630 MHz - 1200 MHz is the most suitable communication frequency band for two kinds of communication model,and the minimum loss of human communication channel occurs around 700 MHz; the change of loss within human communication channel is caused by changing the parameters of the structure of the transceiver.