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一种用于K波段汽车雷达的性能改进型雷达传感器。

An Improved Performance Radar Sensor for K-Band Automotive Radars.

作者信息

Abd El-Hameed Anwer S, Ouf Eman G, Elboushi Ayman, Seliem Asmaa G, Izumi Yuta

机构信息

Electronics Research Institute, Cairo 4473221, Egypt.

Communication and Computer Department, Faculty of Engineering, Nahda University, Beni Suef 62746, Egypt.

出版信息

Sensors (Basel). 2023 Aug 10;23(16):7070. doi: 10.3390/s23167070.

DOI:10.3390/s23167070
PMID:37631607
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10459370/
Abstract

This paper presents a new radar sensor configuration of a planar grid antenna array (PGAA) for automotive ultra-wideband (UWB) radar applications. For system realisation, the MIMO concept is adopted. The proposed antenna is designed to operate over the 24 GHz frequency band. It is based on split-ring resonator (SRR) elements to enhance the operating bandwidth and increase the antenna gain, leading to a better-performing radar system. The PGAA consists of thirty-one radiating elements, in which each element excitation is obtained using a common transmission line centre fed by a 50 Ω coaxial probe. By introducing a superstrate dielectric layer at a distance of λ/2 from the top of the antenna array, the PGAA gain and impedance bandwidth are further improved. The gain is improved by 2.7 dB to reach 16.5 dBi at 24 GHz, and the impedance bandwidth is enhanced to 9.3 GHz (37.7%). The measured impedance bandwidth of the proposed antenna array ranges from 20 GHz to 29.3 GHz for a reflection coefficient (S11) of less than -10 dB. The proposed antenna is validated for automotive applications.

摘要

本文介绍了一种用于汽车超宽带（UWB）雷达应用的平面栅格天线阵列（PGAA）的新型雷达传感器配置。为实现系统，采用了多输入多输出（MIMO）概念。所提出的天线设计用于在24GHz频段工作。它基于分裂环谐振器（SRR）元件，以提高工作带宽并增加天线增益，从而实现性能更好的雷达系统。PGAA由31个辐射元件组成，其中每个元件的激励通过由50Ω同轴探头馈电的公共传输线中心获得。通过在距天线阵列顶部λ/2的距离处引入一个上层介质层，PGAA的增益和阻抗带宽得到进一步改善。增益提高了2.7dB，在24GHz时达到16.5dBi，阻抗带宽增强到9.3GHz（37.7%）。对于反射系数（S11）小于-10dB的情况，所提出的天线阵列的实测阻抗带宽范围为20GHz至29.3GHz。所提出的天线已针对汽车应用进行了验证。

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