Dual-Band Multi-Layer Antenna Array with Circular Polarization and Gain Enhancement for WLAN and X-Band Applications.

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL Micromachines Pub Date : 2025-02-10 DOI:10.3390/mi16020203

Bal S Virdee, Tohid Aribi, Tohid Sedghi

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Abstract

This paper presents a novel multi-layer, dual-band antenna array designed for WLAN and X-band applications, incorporating several innovative features. The design employs a pentagon-shaped radiating element with parasitic strips to enable dual-band operation. A dual-transformed feed network with chamfered feed strip corners minimizes radiation distortion and cross-polarization while introducing orthogonal phase shifts to achieve circular polarization (CP) at the X-band. A Fabry-Pérot structure, strategically placed above the array, enhances gain in the WLAN band. The antenna demonstrates an impedance bandwidth of 1.8 GHz (S₁₁ < -10 dB) at the WLAN band, with 36% fractional bandwidth, and 4.3 GHz at the X-band, with 43% fractional bandwidth. Measured peak gains are 7 dBi for the WLAN band and 6.8 dBi for the X-band, with favourable S₁₁ levels, omni-directional radiation patterns, and consistent gain across both bands. Circular polarization is achieved within 8.5-10.4 GHz. Experimental results confirm the array's significant advancements in multi-band performance, making it highly suitable for diverse wireless communication applications.

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无线局域网和x波段应用中具有圆极化和增益增强的双频多层天线阵列。

本文提出了一种新的多层双频天线阵列，设计用于WLAN和x波段应用，结合了几个创新特性。该设计采用带有寄生条的五角形辐射元件，以实现双频操作。带倒角馈电带的双变换馈电网络可以最大限度地减少辐射失真和交叉极化，同时引入正交相移，在x波段实现圆极化（CP）。一个fabry - p结构，战略性地放置在阵列之上，提高了WLAN频段的增益。该天线在WLAN频段的阻抗带宽为1.8 GHz (S11 < -10 dB)，分数带宽为36%，在x频段的阻抗带宽为4.3 GHz，分数带宽为43%。测量到的WLAN频段峰值增益为7 dBi， x频段峰值增益为6.8 dBi，具有良好的S11电平、全向辐射模式和跨两个频段的一致增益。圆极化在8.5-10.4 GHz范围内实现。实验结果证实了该阵列在多波段性能方面的显著进步，使其非常适合各种无线通信应用。

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

Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION

CiteScore

5.20

自引率

14.70%

发文量

1862

审稿时长

16.31 days

期刊介绍： Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.