Wideband Circularly Polarized Elliptical Patch Antenna and Array Designs

IF 1.2 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2025-08-17 DOI:10.1002/mop.70342

Peng Guo, Xianzheng Zong

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引用次数: 0

Abstract

A broadband circularly polarized (CP) 2 × 2 antenna array using elliptical patch antenna elements is designed in this study. The antenna element is composed of four elliptical patches, four metal posts, and a stair-shaped slot. By rotating the elliptical patches and modifying the coupling slot as stair-shaped, a CP magnetoelectric dipole (ME-dipole) antenna is first realized. Moreover, another two elliptical patches are introduced to generate extra CP mode, which enhances the axial-ratio (AR) bandwidth. The designed CP elliptical patch antenna is expanded to a 2 × 2 antenna array which a feeding network using sequential rotation technology is adopted to feed the array. Measured results indicate that the antenna array exhibits an impedance bandwidth (|S₁₁| < −10 dB) of 67.6% and a 3 dB AR bandwidth of 59.1% is obtained. Besides, the measured peak gain is 14.14 dBic at the center frequency 5.5 GHz. The excellent performances make it suitable for C-band communication systems which CP radiation is required.

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宽带圆极化椭圆贴片天线与阵列设计

本文设计了一种采用椭圆贴片天线单元的宽带圆极化2 × 2天线阵列。天线单元由四个椭圆贴片、四个金属柱和一个楼梯形槽组成。通过旋转椭圆贴片并将耦合槽修改为阶梯形，首次实现了CP磁电偶极子天线。另外，引入两个椭圆补丁来产生额外的CP模式，提高了轴比带宽。将所设计的CP椭圆贴片天线扩展为2 × 2天线阵，采用顺序旋转馈电网络馈电。测量结果表明，天线阵列的阻抗带宽（|S11| <−10 dB）为67.6%，3db AR带宽为59.1%。在中心频率5.5 GHz处测得峰值增益为14.14 dBic。其优良的性能使其适用于需要CP辐射的c波段通信系统。

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

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication