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本文研究小电尺寸副面和馈源横向大偏焦时次级方向图特性。提出用调整馈源对副面照射状态的方法来明显地改善天线电气性能(减少增益损失和降低边瓣电平)。研制了结构简单、体积小且性能良好的馈源。本文指出,对于限定的方向图畸变程度,高放大率系统可以允许有更大的馈源偏焦值。同时,还指出双反射面天线的偏焦等效抛物面法的适用范围是有限的。
In this paper, we study the characteristics of the secondary pattern when the size of the small electric side and the large lateral focus of the feed. It is proposed to improve the electrical performance of the antenna (reduce the gain loss and reduce the sidelobe level) by adjusting the feed irradiation on the secondary side. Developed a simple structure, small size and good performance of the feed. This paper points out that for a limited degree of pattern distortion, a high magnification system may allow for greater feed focus. At the same time, it is also pointed out that the scope of application of the depolarized equivalent paraboloid method for dual-reflector antennas is limited.