天线阵列的双正交模分析法

提出一种新型分析天线阵列的方法，该方法利用模式理论，结合阵列特点选取每个阵元的双正交模函数组为整个阵列矩量法的分域展开函数和加权函数，考虑耦合性较强那部分互耦矩阵，产生稀疏阻抗矩阵，进行运算得到所需特性。分析了天线阵列和散射体阵列特性，计算结果与传统矩量法相比一致性较好。方法既保持了传统矩量法的精确性，而且概念清晰，节约存储空间，提高了计算效率。

Analysis of Multiple Scatterers and Radiators Using Biorthogonal Modes

An novel algorithm is proposed for analysis of multiple scatterers and radiators using the biorthogonal modal technique. The biorthogonal expansion functions/weighting functions of each single conductor constructed applied to the MoM basis functions are used to generate a sparse moment matrix. The new matrix equation is solved in a way that only the significant mutual impedances are considered. The proposed algorithm is applied to multiple scatterers, a linear dipole array and a linear array of bow-tie antennas. Computed results are compared to those obtained using the direct moment method solution and exhibit very good agreement. Compared to the conventional moment method, biorthogonal modal method owns the merits of clarity in concept, simplicity in computation and saving storage space etc.