A broadband gain-enhanced metasurface-based circularly polarized patch antenna for WLAN application

IF 1.6 4区地球科学 Q3 ASTRONOMY & ASTROPHYSICS

Radio Science Pub Date : 2025-06-01 DOI:10.1029/2024RS008063

Deepak Ram;Amit Kumar Singh;Somak Bhattacharyya

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引用次数: 0

Abstract

This article presents a broadband gain-enhanced circularly polarized (CP) microstrip patch antenna based on metasurface (MS). A truncated corner square patch with a cross-shaped slot has been employed as the host antenna, configured on a 1.6 mm thick FR-4 substrate backed by a copper ground plane. The MS layer consisting of a 4 × 4 square array has been designed on another 1.6 mm thick FR-4 substrate with identical outer dimensions acting as a superstrate layer. The proposed antenna exhibits a — 10-dB reflection coefficient bandwidth spanning from 4.37 to 7.03 GHz (46.67%), along with a 3-dB axial ratio (AR) bandwidth from 5.13 to 5.78 GHz (12%). At 5.3 GHz, the antenna exhibits a maximum realized gain of 6.8 dBic. Furthermore, polarization of the antenna is characterized as left-handed circularly polarized. To verify the impedance response, an equivalent circuit model of the antenna has been developed step-by-step followed by fabrication of the prototype. The measured results show high degree of similarity with the simulated responses. Being low profile (0.56λo × 0.56λo × 0.028λo at 5.3 GHz), the proposed CP antenna can be utilized for applications of WLAN, Wi-Fi wireless computer networks etc.

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一种用于WLAN的宽带增益增强超表面圆极化贴片天线

提出了一种基于超表面（MS）的宽带增益增强圆极化微带贴片天线。主天线采用带十字槽的截角方形贴片作为主天线，配置在1.6 mm厚的FR-4基板上，背面为铜接平面。将4 × 4方形阵列组成的质谱层设计在外尺寸相同的1.6 mm厚FR-4衬底上作为上覆层。该天线具有4.37 ~ 7.03 GHz（46.67%）的- 10db反射系数带宽，以及5.13 ~ 5.78 GHz（12%）的3db轴比（AR）带宽。在5.3 GHz时，天线的最大实现增益为6.8 dBic。此外，天线的极化特征为左旋圆极化。为了验证阻抗响应，逐步建立了天线的等效电路模型，并制作了样机。实测结果与模拟结果具有较高的相似性。该天线在5.3 GHz时具有0.56λo × 0.56λo × 0.028λo的低姿态，可用于WLAN、Wi-Fi无线计算机网络等应用。

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

Radio Science 工程技术-地球化学与地球物理

CiteScore

3.30

自引率

12.50%

发文量

112

审稿时长

1 months

期刊介绍： Radio Science (RDS) publishes original scientific contributions on radio-frequency electromagnetic-propagation and its applications. Contributions covering measurement, modelling, prediction and forecasting techniques pertinent to fields and waves - including antennas, signals and systems, the terrestrial and space environment and radio propagation problems in radio astronomy - are welcome. Contributions may address propagation through, interaction with, and remote sensing of structures, geophysical media, plasmas, and materials, as well as the application of radio frequency electromagnetic techniques to remote sensing of the Earth and other bodies in the solar system.