A Low-Profile and High-Efficiency GRIN Lens Antenna for Wide-Angle Multibeam Radiation

IF 5.9 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2026-10-01 Epub Date: 2026-07-20 DOI:10.1109/TAP.2026.3713192

Li-Zhao Song;Shan Huang;Shu-Lin Chen;Pei-Yuan Qin;Y. Jay Guo

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引用次数: 0

Abstract

This article presents a new folded multibeam flat gradient-index (GRIN) lens antenna that achieves a wide angular coverage and high aperture efficiency within a compact physical profile. The proposed antenna integrates a transmissive primary lens for multibeam radiation, a secondary lens featuring anomalous reflections for profile reduction, and multiple feeds positioned between the two lenses. The secondary lens is innovatively synthesized to efficiently redirect waves from a designated feed toward the primary lens while compensating for spatial phase delays for optimal beam generations at 0° and ±45°. Several intermediate feed locations are optimized to produce additional beams across the ±45° angular range. For concept validation, a lens prototype incorporating seven compact feeds is designed, fabricated, and measured. Experimental results demonstrate stable multibeam performance between 8.5 and 11 GHz, producing seven independent beams covering around

$\pm 45^{\circ }$

with low scanning losses. A measured peak aperture efficiency of 46% is obtained with a 63% reduction of the lens profile compared to the conventional unfolded configuration.

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面向广角多波束辐射的低轮廓高效GRIN透镜天线

本文提出了一种新型折叠多波束扁平梯度折射率透镜天线，该天线在紧凑的物理外形内实现了广角覆盖和高孔径效率。该天线集成了一个用于多波束辐射的透射主透镜，一个用于减少轮廓的具有异常反射的副透镜，以及位于两个透镜之间的多个馈电。副透镜是创新的合成，有效地将波从指定馈送到主透镜，同时补偿空间相位延迟，在0°和±45°的最佳光束世代。几个中间馈电位置经过优化，可以在±45°角范围内产生额外的光束。为了概念验证，设计，制造和测量了包含七个紧凑进料的透镜原型。实验结果表明，在8.5 ~ 11 GHz范围内具有稳定的多波束性能，产生7个独立波束，覆盖范围约$\pm 45^{\circ}$，扫描损耗低。测量的峰值孔径效率为46%，与传统的未折叠配置相比，透镜轮廓减少了63%。

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 Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques