用于毫米波雷达、焦距可调的准光学菲涅尔透镜天线

IF 1.4 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Microwave and Wireless Technologies Pub Date : 2023-12-22 DOI:10.1017/s1759078723001472

Niklas Muckermann, J. Barowski, N. Pohl

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引用次数: 0

摘要

本文介绍了一种介质透镜天线的设计，它利用阶梯菲涅尔透镜的概念来聚焦电磁毫米波。根据这些波的准光学特性，对笛卡尔椭圆形进行了优化，并将其用作聚焦透镜。多个这样的透镜被组合成两个不同的基于菲涅尔透镜的天线。我们研究了这些新设计的透镜天线，并将它们与基于笛卡尔椭圆形的聚焦透镜天线和远场透镜天线进行了比较。使用频率调制连续波（FMCW）雷达进行的仿真和测量验证了新设计的有效性，表明聚焦尺寸得到了进一步改善，同时透镜天线的尺寸和重量分别显著减少了 53% 和近 48%。此外，基于菲涅尔的透镜天线显示出频率依赖性，可在 177% 的宽相对调谐范围内实现基于频率的焦距转向，我们对各种带宽和中心频率进行了深入研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Quasioptical Fresnel-based lens antenna with frequency-steerable focal length for millimeter wave radars

This article presents the design of a dielectric lens antenna that utilizes the concept of a stepped Fresnel lens for focusing electromagnetic millimeter waves. Based on the quasi-optical properties of these waves, a Cartesian Oval is optimized and employed as a focusing lens. Multiple such lenses are combined to two different Fresnel-based lens antennas. We survey these newly designed lens antennas and compare them with a focusing lens antenna based on a Cartesian oval and a far-field lens antenna. Simulations and measurements with a frequency-modulated continuous-wave (FMCW) radar validate the effectiveness of the new design, demonstrating an even improved focus size while significantly reducing the size and weight of the lens antenna by up to 53% and by nearly 48 %, respectively. Additionally, the Fresnel-based lens antennas reveal a frequency dependency, enabling frequency-based steering of the focal length over a wide relative tuning range of 177%, which we thoroughly investigate for various bandwidths and center frequencies.

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来源期刊

International Journal of Microwave and Wireless Technologies ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.50

自引率

7.10%

发文量

130

审稿时长

6-12 weeks

期刊介绍： The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.