基于区间分析的非对称外形天线罩厚度设计

厚度误差是影响天线罩电性能的重要因素.对于非对称外形天线罩,厚度误差引入的电性能恶化程度会随天线扫描角变化.针对该问题,文中提出了一种基于区间分析的天线罩厚度设计方法.首先根据误差区间分析天线罩的方向图区间,从中提取电性能指标区间,进而分析不同扫描角下电性能指标区间随厚度的变化特性.通过对电性能指标及其变化区间作单一目...

Thickness Design of Radome with Asymmetric Shape Using Interval Analysis

Thickness error is an important factor affecting the electromagnetic (EM) performance of radome. For the radome with asymmetric shape, the EM performance degradations caused by thickness errors vary with antenna scan angle. Aiming at this problem, a radome thickness design method based on interval analysis is proposed in this paper. First, the radome power pattern interval is analyzed according to the interval of errors, from which the EM performance intervals are obtained. Then, the variation of EM performance intervals with thickness under different scan angles are analyzed. Through transforming the EM performance and its variation intervals into a single objective function, the thickness is selected to yield the optimal EM performance and its variation intervals under different scan angles. Simulation results of a tangent ogive radome validate the effectiveness of the proposed method.