Design of Patch Antenna Array with Cavity Structure on Quartz Glass for Radar Applications

2022 IEEE 9th International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE) Pub Date : 2022-08-26 DOI:10.1109/MAPE53743.2022.9935188

Junjie Xu, Sijian Lin, Yubo Huang, Zhuqing Wang

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Abstract

This paper presents a 77 GHz patch antenna array with cavity structure based on the process of MEMS techniques for millimeter-wave radar. The designed antenna consists of feed line network and radiating patch, which are the integral parts of the antenna. The bandwidth is effectively improved by loading the cavity structure on the quartz glass substrate through MEMS process. The simulation results confirmed that the proposed antenna array obtains a bandwidth of 4.2% (from 75.25 to 78.47 GHz), with a 10.7 dB max gain within the bandwidth. The proposed antenna array has advantages in gain and bandwidth, indicating a great potential in the field of the millimeter-wave radar antenna. In addition, quartz glass substrate with cavity structures provides a solution for relatively high radiation efficiency and gain due to its lower mass production cost and better electronic compatibility. Thus, the designed quartz glass-based patch antenna array can be batch fabricated at low cost, and is highly suitable for hybrid integration with 77GHz millimeter-wave radar chips, thereby improving the performance of millimeter-wave radar.

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雷达用石英玻璃腔结构贴片天线阵列的设计

提出了一种基于MEMS工艺的77 GHz空腔贴片天线阵列，用于毫米波雷达。所设计的天线由馈线网络和辐射贴片组成，它们是天线的组成部分。通过MEMS工艺将空腔结构加载在石英玻璃基板上，有效地提高了带宽。仿真结果表明，该天线阵列的带宽为4.2% (75.25 ~ 78.47 GHz)，带宽范围内的最大增益为10.7 dB。该天线阵列在增益和带宽方面具有优势，在毫米波雷达天线领域具有很大的发展潜力。此外，具有腔体结构的石英玻璃基板由于其更低的量产成本和更好的电子兼容性，为相对较高的辐射效率和增益提供了解决方案。因此，所设计的基于石英玻璃的贴片天线阵列可以低成本批量制造，并且非常适合与77GHz毫米波雷达芯片混合集成，从而提高毫米波雷达的性能。

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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2022 IEEE 9th International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE)

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