摘要
本文介绍了一种口径耦合多层微带天线单元的设计。该设计方案综合采用几种展宽频带的方法:采用双层贴片结构;选用低介电常数的厚介质基片;并使用口径耦合的馈电方式。仿真结果表明,天线单元驻波比小于1.5的相对带宽达到20%。此外,本文给出了由该单元组成的4单元微带天线阵,以及该天线阵的实测值。该形式的天线阵结构简单,性能满足要求,可用作合成孔径雷达系统的天线子阵。
This paper introduce a design of an aperture - coupled stacked Micrestrip antenna. This design adopt several techniques to enhance the bandwidth： use stacked patch; choose the low and thick substrate; adopt aperture - coupled. The experimental result show that the bandwidth of VSWR 〈 1.5 reaches 20%. Furthermore, this paper present the design and measure result of the 4 cells array which is composed of this antenna cell. This kind of antenna array has simple structure and nice performance, and can be used as a sub - array of synthetic aperture radar（SAR） system.
出处
《中国传媒大学学报（自然科学版）》
2006年第2期58-62,共5页
Journal of Communication University of China：Science and Technology
关键词
微带天线
宽频带
多层
口径耦合
Microstrip antennas
Broadband
Stacked
Aperture - coupled
