红外与毫米波学报2025，Vol.44Issue(2)：168-176,9.DOI:10.11972/j.issn.1001-9014.2025.02.004
适用于汽车毫米波雷达频率复杂阻抗匹配的宽带非均匀微带线设计
Design of a wideband non-uniform microstrip line for complex impedance matching in automotive radar frequencies
摘要
Abstract
Microstrip transmission lines connecting to the millimeter wave radar chip and antenna significantly af-fect the radiation efficiency and bandwidth of the antenna.Here,a wideband non-uniform wavy microstrip line for complex impedance in automotive radar frequency range is proposed.Unlike the gradient transmission line,the wavy structure is composed of periodically semi-circular segments.By adjusting the radius of the semi-circu-lar,the surface current is varied and concentrated on the semi-circular segments,allowing a wider tunability range of the resonant frequency.The results reveal that the bandwidth of the loaded wavy transmission line antenna im-proves to 9.37 GHz,which is 5.81 GHz wider than that of the loaded gradient line.The gain and the half power beam width of the loaded antenna are about 14.69 dB and 9.58°,respectively.The proposed non-uniform mi-crostrip line scheme may open up a route for realizing wideband millimeter-wave automotive radar applications.关键词
毫米波/渐变线/波浪传输线/宽带/高增益阵列天线Key words
millimeter wave/gradient line/wavy transmission line/broadband/high gain array antenna分类
物理学引用本文复制引用
张双根,于涛,王玉兰,程志华,姚建铨..适用于汽车毫米波雷达频率复杂阻抗匹配的宽带非均匀微带线设计[J].红外与毫米波学报,2025,44(2):168-176,9.基金项目
Supported by the National Natural Science Foundation of China(61974104) （61974104）
