微带阵列天线仿真技术在某车型前向毫米波雷达中的应用

Application of Microstrip Array Antenna Simulation Technology in Forward Millimeter Wave Radar in a Vehicle

本文首先介绍为什么毫米波雷达是智能驾驶汽车的标配,并且描述了毫米波雷达的特点、分类,进而深度剖析毫米波雷达测距、测速、测角的工作原理。一方面,本文详细介绍阵列天线发射电磁脉冲、接收探测目标反射电磁脉冲两者之间存在的多普勒频移现象;另一方面,本文从工程应用角度剖析了一个77GHz毫米波雷达的“瞳孔”——带阵列天线,并且提取三维远场增益方向图、主瓣、旁瓣、微带阵列天线的线电流分布、近场电场分布等参数。本文为全方位理解臺米波雷达、精准仿真天线阵列及工程应用指明了方向。

The background why millimeter wave radar is the standard configuration of intelligent driving cars is firstly introduced in this papeer.And the characteristics and classification of millimeter wave radar is described,and then the working principle of millimeter wave radar 5s ranging test,speed test,and angle test is deeply analyzed.In particular,the Doppler frequency shift between the electromagnetic pulse emitted by the array antenna and the electromagnetic pulse reflected by the detection target is narrated in detail.Secondly,the practical micro-strip array antennas of 77GHz millimeter wave radar are analyzed from the perspective of engineering application in this thesis.Sil standing wave reflection coefficient,three-dimensional far-field gain pattern,main lobe,side lobe,current distribution Ratio,line current distribution of micro-strip array antenna,near-field electric field distribution,FOV of two-dimensional azimuth and pitch angle and other parameters are extracted,and the data are showed with curves,charts.The direction for in-depth understanding of millimeter wave radar,accurate simulation of antenna arrays and engineering applications is pointed out in this paper.