多模多馈天线的悬索结构分析与研究

Structural analysis and discussion on suspension structure of multi-mode multi-feed antenna

多模多馈天线传统的悬索结构分析与计算中将悬挂线视为直线,难以保证天线施工后的成型良好。本文讨论一种工程实用的较为精确的悬索结构分析与计算方法。根据各悬挂点高度不变的特点,应用悬垂线方程式计算各悬挂点半径,应用力矩公式修正以上计算结果,确定振子线各节段的长度。本方法适用于不等大小、不等间距集中荷载作用下的线天线悬吊索,可以保证天线施工后的成型良好。在工程实用上,与传统的几何方法计算的结果相比,本方法得出的解更为精确。

It seems difficult for the conventional structural analysis and calculation method to ensure excellent shape to the suspension structural multi-mode multi-feed antenna, which considers the suspended cables as straight lines. Now, a new method in practical engineering is proposed for suspension structural analysis and calculation. Firstly, according with the character that the heights of suspension points are steady, the radii of suspension points can be obtained by the suspended-cable equations, and their radii are corrected by the moment equations, then the lengths of antenna wire segments are determined. This method applies to the wire antenna＇s rope slings influenced by focus forces with different power and space, and it ensures fine shape to the antenna. Compared with the calculating result of conventional geometric method, the result here is more accurate in practical engineering.