Design of Automotive Radar Antenna for Covering Middle- and Long-Range With Dual-Circular Polarization

IF 5.8 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-02 DOI:10.1109/TAP.2024.3450321

Mohammad Yousefzadeh;Rasoul Ebrahimzadeh;Bijan Zakeri;Larbi Talbi;Khelifa Hettak;Halim Boutayeb

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Abstract

This article proposes an antenna based on the substrate-integrated waveguide (SIW) to cover both middle- and long-range with dual-circular polarization for automotive polarimetric radar at 78 GHz. The proposed antenna comprises six columns of SIW linear inclined slot arrays fed by two same feeding networks from both sides to realize right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP). In addition, the established unequal phase and amplitude distributions of the feeding network result in a flat-shoulder beam. This type of beam prepares the required coverage range for both long- and middle-range radar using a single antenna. There is a fair agreement between the measured and simulated results, in which the proposed antenna’s gain is around 21.4 dBi and the axial ratio (AR) is lower than 3 dB throughout the operating frequency bandwidth. Besides,

$S_{11}$

and

$S_{22}$

are less than −10 dB between 76.3 and 79.2 GHz, and isolation is around −35 dB.

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利用双圆极化设计覆盖中远距离的汽车雷达天线

本文提出了一种基于基底集成波导（SIW）的天线，可同时覆盖中程和远程双圆极化，适用于 78 GHz 频率的汽车偏振雷达。拟议的天线由六列 SIW 线性倾斜槽阵列组成，由两侧相同的馈电网络馈电，以实现右旋圆极化（RHCP）和左旋圆极化（LHCP）。此外，馈电网络既定的不等相位和振幅分布产生了平肩波束。这种波束为使用单天线的远程和中程雷达提供了所需的覆盖范围。测量结果与模拟结果相当吻合，在整个工作频率带宽内，拟议天线的增益约为 21.4 dBi，轴向比（AR）低于 3 dB。此外，在 76.3 至 79.2 GHz 之间，$S_{11}$ 和$S_{22}$ 小于 -10 dB，隔离度约为 -35 dB。

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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques

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