摘要
文章介绍了圆顶阵的概念、实现宽角扫描的原理;利用几何光学法分析了圆弧阵的口径场幅度、固定移相器的相移;同时,给出了圆顶单元的几种设计方法。最后,对文中推导出的重要公式进行了验证,并从中找到适合工程实现的设计参数。结果表明,几何光学法是分析圆顶相控阵极其有效的方法,圆波导是圆顶单元比较好的选择,圆顶相控阵在实现宽角扫描方面具有成熟的理论依据。
The concept of the dome array and the principle of wide-angle scanning is introduced in the paper. Geometric optics method is used to analysis the aperture field of arc array and phase shift of fixed phase shifter. Then kinds of design method of dome elements are pointed out. Firally, the formula is verified and the suitable parameters for engineering implementation are found. The results show that geometric optics nlethod is an extremely effective method for analyzing the dome antenna. At the same time, circle waveguidc is the better choose for the dome elements, and there is complete theoretical basis for the dome antenna to implement wide-angle scanning.
出处
《空间电子技术》
2011年第2期22-25,共4页
Space Electronic Technology
关键词
圆顶阵
几何光学法
相移
固定移相器
Dome antemla
Geometric optics method
Phase shift
Fixed phase shifter
