车载鞭天线电磁特性及耦合度的仿真研究

Simulation of Electromagnetic Character and Coupling Degree of Vehicle Whip Antennas

天线是现代汽车上经常使用的设备之一,研究天线电磁特性受车体影响的情况和多部天线间的干扰情况是十分重要的。文中建立了逼真的汽车模型,利用以有限积分法为基础的CST微波工作室对模型上不同位置的鞭天线电磁特性及多部天线间的耦合度进行了仿真研究,最终通过仿真结果分析出最佳的天线位置。分析过程和所得到的结果可作为汽车电磁兼容研究及车载天线设计的手段和依据。

Antennas have become a frequently used component in modem vehicles. It is very important to research the electromagnetic character of antenna affected by vehicle body and the interference among the antennas. In this paper, a lifelike vehicle model was constructed, then the electromagnetic character of whip antenna at different position on model and the coupling degree among antennas are simulated by using CST based on FIT technology . The best antenna position was obtained by simulation results at last. The analysis process and simulation results can be regarded as the way and means for vehicle electromagnetic compatibility research and vehicle antenna＇ s design.