应用AWE技术快速分析线面宽带电磁特性

利用渐近波形估计(AWE)技术分析了线面连接混合结构宽频带电磁特性。为了保证线面连接处电流的连续性,采用线-三角形模型,导体部分和导线部分与线面连接处分别采用不同的基函数;推导出线面连接混合结构的阻抗矩阵及其高阶导数,通过矩量法(MoM)求解线面积分方程得到给定频率点电流分布,然后应用AWE 技术快速有效地实现了导体和线结构在宽频带内的电流分布,得到整个线-面连接混合结构的输入阻抗和辐射方向 图,通过与MoM 结果相比,验证了该方法在分析线面混合结构宽带问题方面的高效性。

Application of AWE to Wide Band Electromagnetic Properties Fast Analysis of Wire-Surface Configurations

The asymptotic waveform evaluation (AWE) technique is applied to deal with wire-surface junction configurations broadband electromagnetic radiation problems in this paper. To ensure the current continuity, three different basis functions are used for surface, wire and junctions. And impedance and high-order derivative formulas of wire-surface attachment are derived. The MoM is used to solve the surface electric current density at a given frequency and obtain the current distribution at the given frequency point. Using of Pade approximation, the electromagnetic radiation properties can be obtained within a frequency range. The numerical results are compared with the results by MoM point-by-point calculations.The proposed method can greatly reduce the computation time without loss of accuracy.