平板裂缝天线短路板边缘辐射裂缝的研究

Study of Slots Adjacent Short Board of Planar Slot Antenna

对平板裂缝天线驻波子阵间短路板的两种处理方法———短路板插入法和短路板融入法进行了研究。结果表明 ,保持所有辐射裂缝单元间距相等的短路板融入法有利于低副瓣性能的实现。对于短路板融入法 ,采用镜像原理导出了短路板产生的TE2 0模对相邻辐射裂缝导纳影响的解析表达式。

This paper studies two solutions for radiating slots adjacent the short board, the insertion method and the including method. Calculating result shows that it is beneficial to realize low sidelobe to keep uniform element space in including method. Using imaging principle an analytical expression of conductance of the slot is derived with the effect of TE20 mode of the adjacent short board for including method.