天线阵方向图一种改进综合方法

An Improved Method for Synthesizing Antenna Pattern

提出天线阵方向图的一种综合方法，把待求的阵因子视为若干组“子阵”因子的叠加。每个“子阵”对应一个相位线性递变、幅度按一定规律加权的阵元电流谐波，“子阵”阵因子的空间指向对应一定的空间抽样点。各空间谐波之和即为阵元的总激励，它对应待求的阵因子。调整空间谐波的个数，相对幅度及空间抽样点位置，即可综合出理想的方向图。最后给出一个设计实例用以说明这种综合方法。

A desired pattern factor can be regarded as a supeposition of a set of sub-array factors, each sub-arrtay factors corresponds to an certain space hamonic currents with linear progressing phase and weighting amplitude. The main-beam of each sub -array corresponds to a certain space sampling point. The sum of all space hamonic currents is the excitation Which corresponds to the desired pattern . By adjusting the number of space hamonic, the weighting coefficents and the positions of sampling points, the required pattern can be obtained. Finally,an example is given for illUStrating this method.