摘要
雷达散射截面(RCS)是目标天线的一个重要指标参数,雷达截面缩减就是控制和降低军用目标的雷达特征,迫使敌方电子探测系统和武器平台降低战斗效力,从而提高军用目标的突防能力和生存能力。因此,减小RCS一直是天线发展的重要方向。文中根据变分公式,计算新型背腔微带贴片天线的散射场。使用混合有限元边界积分法,将问题转化为一个矩阵方程的求解。通过分析不同的天线结构和不同的填充介质对天线RCS的影响,给出数值结果,从而看出这种方法的精确性和有效性。
Radar cross-section （RCS） is an important parameter of a target antenna. In fact, keeping down the RCS is namely controlling and reducing the radar character of military aim, which enhances recovery competence and survival competence of the military aim because of compelling enemy electronic detecting system and weapon stage playing down its militancy. Therefore, to minimize RCS is antenna＇s important development direction at all time. In this paper, we computing scattering of new-style cavity-backed microstrip patch antenna based on a variation formulation. The problem can be converted to a matrix equation calculation by using the finite-element-boundary-integral method. Numerical results are presented via analyzing the influence of the RCS of the antenna owing to different antennae structure and different medium filled in the cavity. Consequently, the accuracy and validity of this method can be seen.
出处
《电子测量技术》
2007年第2期25-27,41,共4页
Electronic Measurement Technology
关键词
背腔
有限元法
矢量基函数
雷达散射截面
cavity-backed
finite-element method
vector basis function
radar cross-section （RCS）
