多频段汽车天线电磁兼容与布局优化仿真设计

Simulation Design of Electromagnetic Compatibility and Layout Optimization for Multiple Antennas in Different Operating Frequencies of Vehicle

利用仿真软件FEKO对汽车多天线电磁兼容与布局优化进行电磁仿真设计。针对天线单体目标及车载天线一体化电大尺寸目标,FEKO分别了采用矩量法(MoM)求解器、多层快速多极子算法(MLFMM)求解器,统计了两种求解器的未知量数目、运行时间等参数,并获得了回波损耗和远场增益方向图等仿真结果。通过对汽车不同工作频段的天线进行布局设计以及仿真,获得了天线之间隔离度这一电磁兼容重要指标,并通过优化多天线布局,提高了天线之间的隔离度、汽车的电磁兼容性。利用布局优化仿真的方法可以在研发前期发现潜在的问题,有效地降低车企研发成本、缩短研发周期。

The electromagnetic simulation design of automotive multi-antenna electromagnetic compatibility and layout optimization was carried out by using simulation software FEKO.For the single antenna target and the vehicle antenna integrated electric large size target,FEKO used the moment method(MoM)solver and the multi-layer fast multipole algorithm(MLFMM)solver respectively.The number of unknowns,operating time and other parameters of the two solvers were calculated.Simulation results such as return loss and far-field gain patterns were obtained.By layout design and simulation of antennas in different operating frequency bands of automobiles,the isolation between antennas,an important indicator of electromagnetic compatibility,was obtained.By optimizing the layout of multiple antennas,the isolation between antennas and the electromagnetic compatibility of automobiles were improved.The use of layout optimization simulation methods can identify potential problems in the early stages of research and development,effectively reducing R&D costs and shortening R&D cycles for automotive companies.