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用于GPS L1/L2频段和L波段卫星接收机的双感圆极化阵列天线。

Dual-sense circularly polarized array antenna for GPS L1/L2 bands and L-band satellite receivers.

作者信息

Khudhair Ahmed Azeez, Nourinia Javad, Ghobadi Changiz, Shokri Majid

机构信息

Department of Electrical Engineering, Urmia University, Urmia, 57561-51818, Iran.

出版信息

Sci Rep. 2025 Jul 19;15(1):26286. doi: 10.1038/s41598-025-12263-5.

DOI:10.1038/s41598-025-12263-5
PMID:40684035
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12276253/
Abstract

A wideband, dual-sense circularly polarized (CP) crossed-dipole array antenna for L-band satellite receivers and GPS L1/L2 bands is presented in this study, addressing conventional designs' limitations. Using a single wideband double branch-line coupler and planar crossed-dipole arrays, the antenna achieves a measured impedance bandwidth of 57.14% (1.0-1.8 GHz) and an axial ratio bandwidth of 46.72% (1.05-1.69 GHz) as well as axial ratio beamwidths of 66.7°/107.3° for right-hand circular polarization (RHCP) and 82.7°/83.2° for left-hand circular polarization (LHCP), covering both L1 (1.575 GHz) and L2 (1.227 GHz) GPS bands in full. The incorporation of a single wideband double branch-line coupler with dual-band printed dipoles allows for wideband impedance matching and significantly improves the antenna's performance, achieving a 67% reduction in size compared to the previous design. Furthermore, the proposed configuration in this work simplifies the feeding network and broadens the operational bandwidth of the antenna, making it compatible with a variety of Global Navigation Satellite Systems (GNSSs) and L-band satellite applications. These improvements introduce the proposed antenna as a compact, high-performance, and cost-effective solution for next-generation GNSS/L-band systems.

摘要

本研究提出了一种用于L波段卫星接收机以及GPS L1/L2频段的宽带、双感应圆极化（CP）交叉偶极子阵列天线，以解决传统设计的局限性。该天线采用单个宽带双支线耦合器和平面交叉偶极子阵列，测得的阻抗带宽为57.14%（1.0 - 1.8 GHz），轴比带宽为46.72%（1.05 - 1.69 GHz），右旋圆极化（RHCP）的轴比波束宽度为66.7°/107.3°，左旋圆极化（LHCP）的轴比波束宽度为82.7°/83.2°，完全覆盖了L1（1.575 GHz）和L2（1.227 GHz）GPS频段。单个宽带双支线耦合器与双频印刷偶极子的结合实现了宽带阻抗匹配，并显著提高了天线性能，与先前设计相比尺寸减小了67%。此外，本工作中提出的结构简化了馈电网络并拓宽了天线的工作带宽，使其与各种全球导航卫星系统（GNSS）和L波段卫星应用兼容。这些改进使所提出的天线成为下一代GNSS/L波段系统的紧凑、高性能且经济高效的解决方案。

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