【摘要】 研究了一种计算法向模螺旋天线电特性的新方法.该方法采用了直线段对法向模螺旋天线进行划分,应用合成基函数及相对应的合成检验函数的矩量法对天线进行了模拟分析.用该方法对阻抗矩阵进行了降阶处理,使得求解矩阵方程所需的时间和所需存储量大大减少.计算结果表明,其电流分布和远场方向图与NEC计算结果吻合良好.更多还原

【Abstract】 This paper investigates a new moment method for calculating the electrical characteristics of the Normal Mode Helical Antenna (NMHA). The piecewise-straight segments are used to model the NMHA. The NMHA can be analyzed by the Moment Method with the Composite basis functions and the Composite testing functions. The rank of the impedance matrix can be reduced by using this method. Therefore, the CPU time and the memory storage are significantly reduced in solving the matrix equation. The current distributions and radiation patterns of the NMHA obtained by this method are compared with the NEC results, indicating that the two agree fairly well.更多还原