机载天线隔离度仿真与分析

Analysis and Simulation of Airborne Antenna Isolation

天线隔离度是机载电子系统实现电磁兼容预测的重要参数。根据反应积分原理,提出采用孤立天线远场方向图来替代实际环境中天线的办法,简化分析模型,在保证分析精度的基础上,提高计算效率,从而高效完成电大尺寸环境中天线隔离度的仿真分析。通过在自由空间情况下进行测试,验证了仿真结果的准确性。

The coupling between antennas is an important parameter for describing the electromagnetic interfer- ence（EMI） of the airborne electronic systems. Based on the integration theory, the far field radiation pattern is replaced for the antenna model, and then the airborne model is considered at the same time. This method can be applied to simplify the model and improve the efficiency with proper precision for the analysis and prediction of airborne antenna isolation. Measurement results in free space are presented to validate the simulation results.