摘要
设计出口径为18 mm的8~12 GHz Vivaldi槽缝天线,并对由此组成的12元线阵进行了互耦研究,讨论了互耦对单元方向图的影响,提出了用本征方向图思路来综合天线阵,结合改进后的遗传算法,对包含互耦的12元Vivaldi线阵的副瓣电平进行了优化。结果表明,相比于传统方法,如切比雪夫综合法,本方法有效地解决了天线阵互耦问题,并对任意布阵的天线阵均适用,有较好的实用价值。
A 8~12 GHz vivaldi slot antenna with the width of 18 mm is designed,and the mutual coupling of a linear array with twelve cells made up of the antenna is discussed.The influence of mutual coupling on the cell pattern is also investigated.A method of eigen-driven analysis is presented for antenna array synthesis.Finally,the side-lobe level of the twelve-cell vivaldi antenna array is optimized by using a modified genetic algorithm.The excellent results show that the method can obtain a lower side-lobe level than that of the traditional methods such as Chebyshev,and it can solve the mutual coupling problem between cells effectively.In addition,the method can be applied to any distributing arrays with good practical value.
出处
《中国电子科学研究院学报》
2010年第4期376-380,共5页
Journal of China Academy of Electronics and Information Technology
关键词
VIVALDI天线
本征方向图
互耦
遗传算法
天线阵综合
Vivaldi array
eigen-driven patterns
mutual coupling
genetic algorithm
antenna array synthesis
