椭球共形阵列增益与等效面积关系研究  

Research of the Relationships Between Ellipsoidal Conformal Array Gain and Equivalent Area

作　　者：贾振国[1] 李志刚[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2016年第6期52-56,共5页Radio Engineering

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2013AA122105)

摘　　要：为了解各种共形阵列天线增益在空间的分布情况,从而确定共形阵列的形状。以椭球共形阵列天线为例,给出了一种使用等效投影面积来估算共形阵列天线增益分布的方法。考虑天线单元作用范围影响,推导了各个来波方向等效投影面积的数学表达式。在推导出天线单元具体位置的基础上,根据波束合成原理,通过仿真得到了各个来波方向上的增益分布。对比可见,阵列增益的仿真结果与等效面积的数值计算结果曲线形状吻合,可以直接利用等效面积公式调节椭球长短轴比来改变增益。The spatial distribution of the gain for conformal array antenna is critical to determine the shape of the conformal array antenna.Taking the ellipsoidal conformal array antenna as an example,we introduced a method that equivalent projection area is used to estimate the conformal array antenna gain distribution. Considering the influence of antenna element affecting scope,we deduced the mathematical expressions of the equivalent projection area from each direction. According to the principle of beam-forming,the gain distribution in each direction is figured out through simulation on the basis of the locations of antenna elements as calculated.It can be seen that,the simulation result curve of the gain is similar to the mathematical calculation result of equivalent area.So,the axial ratio in the equivalent area formula can be regulated to influence the gain.

关 键 词：共形阵列 椭球阵列 等效面积 增益分布 

分 类 号：TN821.8[电子电信—信息与通信工程]