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Wide Bandwidth Endfire Antenna with Log-Period Directors

机译:具有对数周期指向矢的宽带Endfire天线

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摘要

This paper presents the design and implementation of a novel wide bandwidth endfire antenna with log-periodic directors. The feeding structure of the proposed antenna includes a balun which is formed using a pair of microstrip-to-slotline transitions. The proposed antenna has three resonant frequencies in the operating frequency band. Both simulation and measurement results show that the operating frequency band of the antenna for S-11 < -10 dB covers the wide bandwidth (5 GHz 10 GHz), and the relative bandwidth is 67%. Far field measurements in azimuth plane and elevation plane show that the radiation patterns are stable and end fire within the operating band at frequencies of 5 GHz, 7 GHz, 8 GHz, 10 GHz. The proposed antenna radiates a well-defined endfire beam, with a front-to-back ratio > 18 dB and cross polarization level below -28 dB. The dimension of the proposed antenna is 26 mm x 27 mm. Good return loss and radiation pattern characteristics are obtained and measured results are presented to validate the usefulness of the proposed antenna structure for wide bandwidth endfire applications.
机译:本文介绍了具有对数周期指向矢的新型宽带端射天线的设计和实现。所提出的天线的馈电结构包括使用一对微带至缝隙线过渡形成的平衡-不平衡变换器。所提出的天线在工作频带中具有三个谐振频率。仿真和测量结果均表明,S-11 <-10 dB时天线的工作频带覆盖了较宽的带宽(5 GHz 10 GHz),相对带宽为67%。在方位角平面和仰角平面中的远场测量结果表明,在5 GHz,7 GHz,8 GHz,10 GHz的频率范围内,辐射方向图是稳定的,并且在操作频带内会着火。拟议中的天线辐射出明确定义的端射束,其前后比> 18 dB,交叉极化水平低于-28 dB。建议的天线尺寸为26 mm x 27 mm。获得了良好的回波损耗和辐射方向图特性,并给出了测量结果,以验证所提出的天线结构对宽带端射应用的有用性。

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  • 作者单位

    Univ Elect Sci & Technol China, Ctr RFIC & Syst Technol, Sch Commun & Informat Engn, Chengdu 611731, Peoples R China;

    Univ Elect Sci & Technol China, Ctr RFIC & Syst Technol, Sch Commun & Informat Engn, Chengdu 611731, Peoples R China;

    Univ Elect Sci & Technol China, Ctr RFIC & Syst Technol, Sch Commun & Informat Engn, Chengdu 611731, Peoples R China;

    Univ Elect Sci & Technol China, Ctr RFIC & Syst Technol, Sch Commun & Informat Engn, Chengdu 611731, Peoples R China|Chongqing Three Gorges Univ, Dept Elect Engn, Coll Elect & Informat Engn, Chongqing 404000, Peoples R China;

    Univ Elect Sci & Technol China, Ctr RFIC & Syst Technol, Sch Commun & Informat Engn, Chengdu 611731, Peoples R China;

    Univ Elect Sci & Technol China, Ctr RFIC & Syst Technol, Sch Commun & Informat Engn, Chengdu 611731, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Endfire antenna; front-to-back ratio; log-period directors; wide bandwidth antenna;

    机译:端射天线;前后比率;对数周期指向矢;宽带天线;

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