Circularly Polarized Cross-Helix Antenna With Quasi-Hemispherical 3 dB Axial Ratio Coverage

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-09-02 DOI:10.1109/LAWP.2025.3605606

Zhuozhu Chen;Zhengyu Zhang;Hongbo Zhu;Zhenxin Hu

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Abstract

This letter presents a circularly polarized (CP) antenna based on cross-helix with a wide 3 dB axial ratio (AR) coverage. First, a twin-helix is utilized to attain a symmetrically omnidirectional radiation pattern with circular polarization while maintaining a compact size. Then, by employing cross-arranged helices and a 90° hybrid coupler, a Huygens source with a wide CP radiation beam is realized. Additionally, a balun based on coaxial-wire and a λ/4 conductor strip is utilized to provide the differential feed signal. Simulation results reveal that the proposed antenna achieves a −10 dB bandwidth from 2.35 GHz to 2.46 GHz. A very wide 3 dB AR beamwidth with ±90° in the two principal planes and at least ±75° in other cut-planes in the hemispherical space is obtained. The proposed antenna is fabricated and tested, and measured results are in good agreement with the simulated ones. Characterized by the wide 3 dB AR spatial coverage, the proposed antenna exhibits great potential in wireless communication applications.

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具有准半球形3db轴比覆盖的圆极化交叉螺旋天线

本文介绍了一种基于交叉螺旋的圆极化（CP）天线，具有宽3db轴向比（AR）覆盖。首先，利用双螺旋结构获得具有圆极化的对称全向辐射图，同时保持紧凑的尺寸。然后，采用交叉排列的螺旋和90°混合耦合器，实现了宽CP辐射光束的惠更斯源。此外，基于同轴线和λ/4导体带的平衡器被用来提供差分馈电信号。仿真结果表明，该天线在2.35 GHz ~ 2.46 GHz范围内实现了−10 dB的带宽。在半球面空间中，获得了两个主面±90°，其他切割面至少±75°的极宽的3db AR波束宽度。对该天线进行了制作和测试，测量结果与仿真结果吻合较好。该天线具有3db的AR空间覆盖范围，在无线通信领域具有巨大的应用潜力。

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

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.