用MoM-UTD混合方法分析机载平台天线间的隔离度
A Hybrid MoM-UTD Method for Analyzing Isolation between Antennas on Airborne Platform
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摘要: 天线间的隔离度是机载平台电磁兼容(EMC)的重要指标之一。由于机载平台的电尺寸很大，因此单纯矩量法(MoM)很难解决。一致性几何绕射理论(UTD)虽是高频方法，适合解决电大问题，但其精度较低。该文采用MoM-UTD混合方法分析机载平台天线间的隔离度，兼顾了计算精度和速度，得到的计算结果和测量值吻合良好。Abstract: Isolation between antennas is an important index for electromagnetic compatibility (EMC) on airborne platform. Airborne platform is an electrically large object and it is difficult to analyze the isolation between antennas mounted on it only by using the Method of Moment (MoM). The Uniform geometrical Theory of Diffraction (UTD) is a kind of high frequency method and can analyze electrically large objects, however, it has poor accuracy. The hybrid MoM-UTD method is employed to analyze the isolation between antennas on airborne platform. Both accuracy and computing speed are concerned, and the numerical results agree well with the measurements.
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