摘要
该文提出了一种基于复合介质结构覆层来提高圆波导天线阵列增益的新方法,利用数值分析方法对异向介质结构和基于异向介质结构圆波导高增益天线阵列的电磁特性进行了数值仿真研究,并将它们与传统圆波导天线阵列进行了比较。结果表明,应用这种复合介质覆层结构可以有效地实现辐射能量的聚集,从而提高了天线阵列的增益,降低了天线阵列副瓣电平,有效地改善了天线阵列的辐射特性。
A new method of improving the gain of circular waveguide array antenna is presented in this paper. The electromagnetic characteristics of metamaterial and high-gain circular waveguide antenna with the metamaterial structure are studied by using the numerical simulation method, which are also compared with those of the conventional antenna. The simulation results show that this method is effective and the metamaterial structure can realize congregating the radiation energy, so the gain of the array antenna is increased and the side lobe level is decreased.
出处
《电子与信息学报》
EI
CSCD
北大核心
2007年第4期994-997,共4页
Journal of Electronics & Information Technology
基金
国家973重大项目基金(00300113)资助课题
关键词
圆波导天线阵列
复合介质结构
高增益
Circular waveguide antenna arrays
Metamaterial structure
High-gain
