An Array Antenna for Both Long- and Medium-Range 77 GHz Automotive Radar Applications
An Array Antenna for Both Long- and Medium-Range 77 GHz Automotive Radar Applications
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DOI：
10.1109/tap.2017.2761549
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发表时间：
2017-12-01
影响因子：
5.7
通讯作者：
Jiang, Zhi Hao
中科院分区：
文献类型：
--
作者：
Xu, Jun;Hong, Wei;Jiang, Zhi Hao
提出了一种新型的平肩辐射方向图阵列天线作为77 GHz汽车雷达的发射天线。当它应用于由一个发射机和多个相同的接收机组成的汽车雷达时，它可以同时满足远程和中距离探测的需求，而无需在远程雷达场景和中距离雷达场景之间来回切换工作模式。本文全面介绍了天线的概念，并对其机理进行了解释。合成了一种非常规的阵列，以获得期望的平肩形辐射方向图。根据阵列合成结果设计了阵列天线样机，该天线由多个线性串联贴片阵列和一个基片集成波导功率与相位分布网络组成。完成了原型阵列天线的制作和测量，测量数据与合成和仿真结果吻合较好，从而验证了设计。
A novel array antenna with a flat-shoulder shaped radiation pattern is proposed as the transmitting antenna for 77 GHz automotive radar application. When it is used in an automotive radar comprising one transmitter and multiple identical receivers, it can meet the demands of both long-range and medium-range detections without switching the operation mode back and forth between the long-range radar scenario and the medium-range radar scenario. The proposed antenna concept is fully introduced to explain its mechanism. An unconventional array was synthesized to achieve the desired flat-shoulder shaped radiation pattern. Prototype of the proposed array antenna was also designed according to the array synthesis result, which consists of several linear series-fed patch arrays and a substrate-integrated waveguide power and phase distributing network. Fabrication and measurement of the prototype array antenna were completed, showing a good agreement between the measured data and the synthesized as well as the simulation results, thereby validating the design.