低相对介电常数的圆极化径向缝隙天线的研究

低相对介电常数的圆极化径向缝隙天线的研究

内容简介：径向缝隙天线是高增益、高效率的平面缝隙阵列天线。天线缝隙阵列按一定的规律排布在径向波导的上表面，径向波导内部填充由慢波材料来抑制天线的栅瓣，其中慢波材料的相对介电常数一般的选择范围是1.5~2.5。本文设计的径向缝隙天线中填充径向波导的慢波材料的相对介电常数为1.06。依据径向缝隙天线的设计原则，适当调整缝隙的排布，所设计天线并未出现栅瓣，并且有较好的方向性。天线的仿真结果与测量结果吻合的较好。

Abstract：The Radial Line Slot Antenna (RLSA) is a planar slotted array antenna, which possesses high gain and high efficiency. The slot pairs are arranged on the top of the radial line waveguide, the waveguide filled with the slow wave material to suppress the grating lobes, generally, the relative dielectric constant is between 1.5 and 2.5. However, this paper presents an antenna that the relative dielectric constant is 1.06. Adjusting the length of the slots, the grating lobes are not appeared, and the direction is very well. And the simulation results are consistent well with the measurement results.

作者：王宜颖, 肖怀宝, 逯贵祯, 吕英华, 林金才, 郭永坤,

关键词：径向缝隙天线, 栅瓣, 慢波材料, 方向性, 仿真, 测量,