| 摘要: |
| 针对地下磁感应通信系统中单个磁性天线路径损耗大、通信效率低、传输距离短的问题，研究了双线圈天线与3D天线两种协同式天线的电磁传播特性。基于Matlab对根据天线数学模型得到的磁感应强度进行了仿真和分析，并将两种天线的传输性能与单一磁性天线进行了比较。研究表明，两种天线的磁场强度都有很大提高，并具有方向性和对称性，双线圈天线的磁场强度分布受发射天线间距、摆放角度以及收发天线垂直距离影响较大，在间距较小情况下，传输距离大于3D天线；而3D天线磁场强度随传输距离衰减更慢，磁场分布范围更广。 |
| 关键词: 磁感应通信 协同传输 双线圈天线 3D天线 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(41631072,42074074) |
|
| Propagation characteristics analysis of underground magnetic induction communication array antenna |
| LIU Baoheng,FU Tianhui,HOU Wenda |
| (College of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China) |
| Abstract: |
| For the problems of large path loss,low communication efficiency and short transmission distance of a single magnetic antenna in the underground magnetic induction communication system,the electromagnetic propagation characteristics of two synergistic antennas,the dual coil antenna and the 3D antenna,are studied.Based on Matlab,the magnetic induction intensity obtained from the antenna mathematical model is simulated and analyzed,and the transmission performance of the two antennas is compared with that of a single magnetic antenna.It is shown that the magnetic field strength of the two antennas has been greatly improved,and they are directional and symmetrical,the magnetic field intensity distribution of the double-coil antenna is greatly affected by the transmitting antenna pitch,the placement angle and the vertical distance of the transmitting and receiving antenna.In the case of smaller spacing,the transmission distance of double-coil antenna is greater than that of 3D antenna,while the magnetic field strength of 3D antenna attenuates more slowly with the transmission distance,and the magnetic field has a wider distribution range. |
| Key words: magnetic induction communication cooperative transmission double-coil antenna 3D antenna |
