单极天线不同波导结构缺陷的比较分析

Q2 Social Sciences
S. J. Chin, M. Aziz, M. R. Ahmad
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引用次数: 1

摘要

本文介绍了针对超宽带单极天线的不同缺陷波导结构(DWS)。单极天线是超宽带应用的潜在候选天线之一。然而,由于低姿态,它的指向性和增益较差。以往的研究都是通过改变单极天线本身的结构来提高增益。本文提出一种缺陷波导结构,在不重新配置单极天线的情况下,实现单极天线的外部设计。根据单极天线的尺寸设计了波导。DWS波导被设计成方形、圆形和螺旋形。单极天线将作为这些波导的输入。通过天线参数研究不同DWS波导对单极子天线的影响。同时,通过在波导的两个开口表面设置两个单极天线,通过透射系数(S21)分析DWS波导的性能。总体而言,单极天线实现了8.54 GHz的宽带宽和最高的效率。带波导的单极天线带宽较窄,仅为2.76 GHz,效率较低。但在2ghz - 7ghz频段,它明显提高了指向性。采用全DWS波导的单极天线在提高指向性和增益的同时,仍能保持8.6 GHz的宽带宽。方形DWS波导单极天线在2ghz ~ 8.5 GHz时具有最高的方向性和增益。圆形DWS波导单极天线在9GHz-10GHz具有最高的方向性和增益。采用螺旋DWS波导的单极天线与其他DWS波导相比效率最高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparative analysis of different defected waveguide structures towards monopole antenna
This paper presents different Defected Waveguide Structures (DWS) towards monopole antenna in Ultrawideband (UWB) frequencies. Monopole antenna is one of the potential candidate for UWB applications. Yet, it has poor directivity and gain due to low profile. Previous studies have made change on the configuration of monopole antenna itself to enhance gain. This paper proposes Defected Waveguide Structure to design externally with monopole antenna without reconfiguring monopole antenna. The waveguide is designed according dimension of monopole antenna. DWS waveguide is designed to have square, circle and spiral shapes in patch. Monopole antenna will act as input to those waveguides. The effects of different DWS waveguides towards monopole antenna will be investigated through antenna parameters. Meanwhile, the performances of DWS waveguides will be also analyzed through transmission coefficient (S21) by setting two monopole antennas at the both open-ended surfaces of waveguide. In overall, monopole antenna achieves wide bandwidth of 8.54 GHz and highest efficiency. Monopole antenna with waveguide achieves narrow bandwidth of 2.76 GHz and low efficiency. Yet, it improves directivity obviously at 2GHz–7 GHz. Monopole antenna with all the DWS waveguide still maintain wide bandwidth of 8.6 GHz at the same time improve directivity and gain. Monopole antenna with square DWS waveguide shows highest directivity and gain at 2GHz–8.5 GHz. Monopole antenna with circle DWS waveguide demonstrates highest directivity and gain at 9GHz–10GHz. Monopole antenna with spiral DWS waveguide shows highest efficiency compares to others DWS waveguide.
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来源期刊
Advances in Engineering Education
Advances in Engineering Education Social Sciences-Education
CiteScore
2.90
自引率
0.00%
发文量
8
期刊介绍: The journal publishes articles on a wide variety of topics related to documented advances in engineering education practice. Topics may include but are not limited to innovations in course and curriculum design, teaching, and assessment both within and outside of the classroom that have led to improved student learning.
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