Low-profile dielectric grooved GRIN lens for broadband millimeter-wave applications

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2024-10-05 DOI:10.1016/j.aeue.2024.155548

Andrzej Dudek, Slawomir Gruszczynski, Krzysztof Wincza

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引用次数: 0

Abstract

Microwave lenses are utilized at millimeter waves to ensure high-gain and narrow-beamwidth radiation patterns. This paper proposes full-dielectric grooved graded-index (GRIN) lenses with an improved effective permittivity profile of the lens. The proposed grooved GRIN lenses combine changes in the lens geometry with the stepped effective permittivity profile to better approximate the theoretical permittivity profile of the lens. A prototype GRIN lens has been designed, fabricated, and measured. The designed lens has diameter and thickness equal to 72 mm and 19.04 mm (5.3

λ_{0}

, 1.4

λ_{0}

at the center frequency of 22 GHz), respectively. The lens covers the entire K-band (18–26.5 GHz) with aperture efficiency better than 44%. Moreover, it achieves the maximum gain and aperture efficiency of 23 dBi and 64%, respectively.

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用于宽带毫米波应用的扁平介质沟槽 GRIN 透镜

毫米波利用微波透镜来确保高增益和窄束宽辐射模式。本文提出了改进透镜有效介电常数曲线的全介质沟槽分级指数（GRIN）透镜。所提出的沟槽 GRIN 透镜将透镜几何形状的变化与阶梯式有效介电常数剖面相结合，从而更好地接近透镜的理论介电常数剖面。我们设计、制造并测量了 GRIN 透镜的原型。设计的透镜直径和厚度分别为 72 毫米和 19.04 毫米（中心频率 22 GHz 时分别为 5.3λ0 和 1.4λ0）。该透镜覆盖整个 K 波段（18-26.5 GHz），孔径效率优于 44%。此外，它的最大增益和孔径效率分别达到 23 dBi 和 64%。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.