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
作者:
作者单位:

1.天津理工大学 集成电路科学与工程学院 天津市薄膜电子与通信器件重点实验室,天津 300384;2.天津大学 激光与光电研究所,天津 300191

作者简介:

Zhihua Chengasakaka1982@163.com

中图分类号:

O441.4


Design of a wideband non-uniform microstrip line for complex impedance matching in automotive radar frequencies
Author:
Affiliation:

1.Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;2.The Institute of Laser & Opto-electronics, Tianjin University, Tianjin 300191, China

Fund Project:

Supported by the National Natural Science Foundation of China (61974104)

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    摘要:

    连接毫米波雷达芯片和天线的微带传输线对天线的辐射效率和带宽有重要影响。本文提出了一种适用于汽车雷达频率范围内复杂阻抗匹配的宽带非均匀微带线。与渐变传输线不同,波浪形传输线由周期性的半圆短段组成。通过调整半圆的半径,表面电流产生变化并且集中在半圆部分,从而获得更宽的谐振频率可调范围。结果表明,加载波浪线毫米波雷达天线的带宽提高到9.37 GHz,比加载渐变线宽5.81 GHz。加载波浪传输线后天线的增益为14.69 dB,半功率波束宽度约为9.58°。本文提出的非均匀微带线方案为实现毫米波雷达扩展宽带的应用提供了重要的思路。

    Abstract:

    Microstrip transmission lines connecting to the millimeter wave radar chip and antenna significantly affect 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-circular, 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 improves 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 microstrip line scheme may open up a route for realizing wideband millimeter-wave automotive radar applications.

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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):163~171]. ZHANG Shuang-Gen, YU Tao, WANG Yu-Lan, CHENG Zhi-Hua, YAO Jian-Quan. Design of a wideband non-uniform microstrip line for complex impedance matching in automotive radar frequencies[J]. J. Infrared Millim. Waves,2025,44(2):163~171.]

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历史
  • 收稿日期:2024-09-10
  • 最后修改日期:2025-02-21
  • 录用日期:2024-12-09
  • 在线发布日期: 2025-04-02
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