摘要
以弹载共形相控阵雷达导引头天线为应用背景,在未考虑极化的情况下,首先推导了任意共形天线单元方向图从局部极坐标系到全局极坐标系转换的一种实用方法;然后采用凹槽加载的中心馈电方式设计了毫米波锥面共形微带天线单元,并建立锥面共形相控阵天线模型,推导了锥面共形天线阵列的导向矢量及其方向图函数;最后采用能量迭代法对15阵元的锥面共形相控阵天线方向图进行了仿真优化,在副瓣电平约束和零点约束两种情况下,分别给出了相应最优加权矢量的求解方法,实现了对方向图波束指向、副瓣电平以及零点的控制。
Based on the application of seeker conformal phased array,a method of arbitrary conformal antenna pattern transformation from local coordinates to global coordinates is given firstly without the consideration of polarized information.Then a Ka-band rectangular inset-fed microstrip patch antenna which conforms to a conical surface has been designed and the antenna array is modeled,the direction vector is studied. At last,the pattern of array with 15 elements is optimized based on the formulation of maximum s directivity,the optimal weighted vectors are respectively given in the two constraint of sidelobe level and null point. The simulation result shows the mainlobe direction,sidelobe level and null point can be controlled.
出处
《微波学报》
CSCD
北大核心
2014年第4期34-39,共6页
Journal of Microwaves
基金
山东省自然科学基金(ZR2012FQ004)
关键词
锥面共形相控阵天线
方向图综合
能量迭代法
conical conformal phased array,pattern synthesis,energy iterative method
