论文部分内容阅读
本文从提高天线效率的观点出发,对标准型卡塞格伦天线进行修正,按照能量守恒定理,等光程条件和斯内尔定理所得到的四个方程利用计算机求解方程组。从而得到改进型卡氏天线主面和付面坐标的数值解,确定改进型卡塞格仑天线的形状,达到提高天线增益和效率的目的。对于已改进后的卡氏天线,如何确定组合馈源的等效辐射中心?才是本文研究的重点内容,考虑到修正主面对于实际生产加工难易和所起到的效果大小,主反射面仍采用抛物面的形式,这样不仅能够达到提高天线效率的目的,而且又不失一般性,并为实际生产加工提供方便,在此基础上采用付反射面反射线的反向延长线与对称轴线交点分布的密集度,确定目标函数,用优化的方法,找出等效辐射中心的最佳位置。
In this paper, the standard Cassegrain antenna is modified from the point of view of improving the antenna efficiency. According to the four equations of equal-energy condition and Snell’s theorem, the equations are solved by computer. Thus, the numerical solution of the main surface and the surface coordinates of the improved KA’s antenna can be obtained, and the shape of the improved Cassegrain antenna can be determined to improve the antenna gain and efficiency. How to determine the equivalent radiation center of the combined feed source is the key point of this paper. Considering the main effect of modifying the main face of the actual production and processing and the size of the effect, the main reflector Still parabolic form, so not only can achieve the purpose of improving the efficiency of the antenna, but without loss of generality, and to facilitate the actual production and processing, on the basis of the reflection of the reflective surface of the line with the anti-extension line of intersection with the axis of symmetry Distribution of concentration, to determine the objective function, using an optimized method to find the best location of the equivalent radiation center.