A broadband circularly polarized antenna for millimeter-wave applications

IF 1.4 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC International Journal of Microwave and Wireless Technologies Pub Date : 2024-02-08 DOI:10.1017/s1759078724000199

Yue Xie, Jianping Zhao, Yurong Sun, Juan Xu

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Abstract

This paper presents a broadband circularly polarized (CP) antenna array for millimeter-wave applications, and the antenna array has the advantages of wide impedance bandwidth (IBW), novel CP design, and low profile. The antenna unit consists of a two-layer substrate and two pairs of magnetoelectric dipoles. Stepped microstrip lines coupled by rectangular slits form a feeder network for easy integration. The axial ratio bandwidth (ARBW) is extended because a pair of parasitic patches is loaded and an elliptical perturbation is added. The simulation results show that the antenna has an ARBW of 18.6% (26.4–31.9 GHz) and an IBW of 45.5% (20.6–32.7 GHz), with a gain greater than 7.11 dBic in the IBW. To improve the gain of the antenna, a 2 × 2 antenna array is designed, fabricated, and measured. The measured results show that the array has an ARBW of 16.6% (26.42–31.21 GHz), an IBW of 41.6% (22.28–33.97 GHz), a peak gain of 13.89 dBic in the IBW, the cross-polarization levels in the xoz-plane and yoz-plane are above 20 dB, and a radiation efficiency greater than 89%.

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用于毫米波应用的宽带圆极化天线

本文介绍了一种用于毫米波应用的宽带圆极化（CP）天线阵列，该天线阵列具有阻抗带宽（IBW）宽、CP 设计新颖和外形小巧等优点。天线单元由两层基板和两对磁电偶极子组成。通过矩形缝隙耦合的阶梯微带线构成了一个馈电网络，便于集成。由于加载了一对寄生贴片并添加了椭圆形扰动，因此轴向比带宽（ARBW）得到了扩展。仿真结果表明，该天线的 ARBW 为 18.6%（26.4-31.9 GHz），IBW 为 45.5%（20.6-32.7 GHz），IBW 增益大于 7.11 dBic。为了提高天线增益，设计、制造并测量了一个 2 × 2 天线阵列。测量结果表明，该阵列的 ARBW 为 16.6%（26.42-31.21 GHz），IBW 为 41.6%（22.28-33.97 GHz），IBW 的峰值增益为 13.89 dBic，xoz 平面和 yoz 平面的交叉极化水平高于 20 dB，辐射效率高于 89%。

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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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.