透地通信磁性接收天线设计

磁感应透地通信通过准静态磁场耦合的方式实现信息传输，可以有效解决传统电磁波通信中信道不稳定、传输距离近、天线尺寸大等问题。磁性天线尺寸小，灵敏度高，不易受电场信号干扰影响，适用于复杂的地下环境。基于磁性天线的基本工作原理，得出了灵敏度和信噪比的表达式，并根据磁芯与线圈不同参数对天线接收特性的影响提出了磁性接收天线的优化设计方案，最后通过公式计算与实验测量验证了天线优化设计方案的正确性与可行性。

Design of a magnetic receiving antenna for through-the-earth communication

Magnetic induction through-the-earth communication realizes information transmission through quasi-static magnetic field coupling,which can effectively solve the problems such as unstable channel,short transmission distance and large antenna size in traditional electromagnetic wave communication.The magnetic antenna is small in size,high in sensitivity,not easily affected by electric field signal interference,and suitable for complex underground environments.Based on the basic working principle of magnetic antenna,the expressions of sensitivity and signal-to-noise ratio are derived,and the optimized design of magnetic receiving antenna is proposed according to the influence of different parameters of magnetic core and coil on the receiving characteristics of antenna.Finally,the correctness and feasibility of the optimized design scheme of the antenna are verified by formula calculation and experimental measurement.