摘要
为了改善雷达系统在低仰角的工作状态,提出了阵列天线幅度锥削分布形式,对阵列天线幅度均匀分布和各种锥削分布形式的辐射方向图和口面效率进行了理论计算,并用Matlab编程进行分析比较。针对某工程的具体情况,选取了其中的4.5dB锥削分布形式,并对实现该分布形式的分支线定向耦合器进行了电路仿真。
In order to improve performance of radar system at low elevation, taper distribution of array antenna amplitude is put forward. Theoretical calculations to antenna pattern and aperture efficiency in uniform distribution and taper distributions are conducted, and comparison and analysis to results are made through Matlab programming. According to an actual project, a taper distribution at 4.5dB is adopted, and circuit simulation to a branch line directional coupler which could realize the distribution is performed.
出处
《火控雷达技术》
2009年第1期70-73,共4页
Fire Control Radar Technology
关键词
阵列天线
均匀分布
锥削分布
辐射单元
方向图
array antenna
uniform distribution
taper distribution
radiation element
pattern
