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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。
An integrated method of antenna array pattern is proposed. The array factor to be determined is regarded as the superposition of several “sub-array” factors. Each “sub-array” corresponds to an array current harmonic which is linearly degenerated in phase and weighted in accordance with a certain regularity. The spatial orientation of the “array” matrix factor corresponds to a certain spatial sampling point. The sum of the space harmonics is the total excitation of the array element, which corresponds to the array factor to be sought. Adjust the number of spatial harmonics, the relative amplitude and spatial sampling point location, you can synthesize the ideal pattern. Finally, a design example is given to illustrate this comprehensive method.