A Low-Profile Broadband Circularly Polarised Wide-Slot Antenna with an Artificial Magnetic Conductor Reflector

IF 0.6 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Applied Computational Electromagnetics Society Journal Pub Date : 2021-01-01 DOI:10.47037/2020.aces.j.360616

F. Fan, Xiao Fan, Xiaoyu Wang, Zehong Yan

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引用次数: 1

Abstract

In this letter, a novel broadband circularly polarisation (CP) wide-slot antenna with an artificial magnetic conductor (AMC) as the reflector is presented. The wide-slot antenna is composed of a knife-shaped radiator and an improved ground plane. A broadband CP characteristic can be achieved by slotting the ground plane to make it an asymmetric ground shape. However, the average gain of the wide-slot antenna is only about 3 dBic because of bidirectional radiation. An AMC reflector is adopted to enhance the gain of the wide-slot antenna without introducing a high profile similar to the PEC reflector. In addition, the four metal plates are vertically placed around the antenna to broaden the axial ratio (AR) bandwidth of the antenna with the AMC reflector. The measurement results show that the 3dB AR bandwidth of the proposed CP antenna is 32.4% (2.35GHz─3.26GHz), the average gain is 6.5dBic in the AR bandwidth and the value of VSWR in the AR bandwidth is less than 2. The size of the antenna is 0.84λ0× 0.84λ0× 0.13λ0 at the centre frequency of 2.805 GHz. The proposed antenna has a low profile, broad AR bandwidth and high gain, thereby being a good candidate for various wireless communication systems.

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带人工磁导体反射器的低轮廓宽带圆极化宽槽天线

本文提出了一种新型的以人工磁导体(AMC)为反射面的宽带圆极化(CP)宽槽天线。宽缝隙天线由刀形散热器和改进的接地面组成。宽带cpp特性可以通过开槽地平面使其成为不对称地形状来实现。然而，由于双向辐射，宽缝隙天线的平均增益仅为3dbic左右。采用AMC反射器来提高宽缝隙天线的增益，而不引入类似PEC反射器的高轮廓。此外，四个金属板垂直放置在天线周围，用AMC反射器拓宽天线的轴向比(AR)带宽。测量结果表明，所设计的CP天线3dB AR带宽为32.4% (2.35GHz ~ 3.26GHz)， AR带宽平均增益为6.5dBic, AR带宽驻波比小于2。天线的尺寸为0.84λ0× 0.84λ0× 0.13λ0，中心频率为2.805 GHz。该天线具有低轮廓、宽增强现实带宽和高增益的特点，是各种无线通信系统的理想选择。

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

Applied Computational Electromagnetics Society Journal 工程技术-电信学

CiteScore

1.60

自引率

28.60%

发文量

审稿时长

9 months

期刊介绍： The ACES Journal is devoted to the exchange of information in computational electromagnetics, to the advancement of the state of the art, and to the promotion of related technical activities. A primary objective of the information exchange is the elimination of the need to "re-invent the wheel" to solve a previously solved computational problem in electrical engineering, physics, or related fields of study. The ACES Journal welcomes original, previously unpublished papers, relating to applied computational electromagnetics. All papers are refereed. A unique feature of ACES Journal is the publication of unsuccessful efforts in applied computational electromagnetics. Publication of such material provides a means to discuss problem areas in electromagnetic modeling. Manuscripts representing an unsuccessful application or negative result in computational electromagnetics is considered for publication only if a reasonable expectation of success (and a reasonable effort) are reflected. The technical activities promoted by this publication include code validation, performance analysis, and input/output standardization; code or technique optimization and error minimization; innovations in solution technique or in data input/output; identification of new applications for electromagnetics modeling codes and techniques; integration of computational electromagnetics techniques with new computer architectures; and correlation of computational parameters with physical mechanisms.