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基于多层介质覆盖层的高增益Fabry-Perot天线设计
Design of a high gain Fabry-Perot resonant antenna by using a multi-layer dielectric superstrate
投稿时间:2017-10-25  修订日期:2017-11-15
中文关键词:介质覆盖层  F–P谐振腔天线  增益  口径效率
英文关键词:dielectric superstrate  Fabry-Perot Resonant Antenna  gain  aperture efficiency
基金项目:
作者单位
刘士杰 School of Electronics and Information EngineeringSichuan UniversityChengdu Sichuan 610064, China 
陈 星 School of Electronics and Information EngineeringSichuan UniversityChengdu Sichuan 610064, China 
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中文摘要:
      提出一种由不同厚度和不同面积的多层介质板叠加制作多层介质覆盖层,代替传统单层介质覆盖层,提高Fabry-Perot(F–P)谐振腔天线增益和口径效率的设计方法。以工作频点5.8 GHz的F–P谐振腔天线设计为例,采用微带贴片天线作为馈源,由多层厚度分别为1 mm,1 mm和1.5 mm,直径分别为160 mm,130 mm和120 mm,相对介电常数为16的聚四氟乙烯介质板叠加制作该天线覆盖层。天线样品的测试结果与设计仿真结果吻合良好。与传统单层介质覆盖层相比,该多层介质覆盖层将工作频率5.8 GHz处天线增益由18.2 dBi提高到19.1 dBi,相应口径效率由70.02%增加到86.14%,天线|S11|<-10 dB阻抗带宽和3 dB增益带宽略有提高,分别达到8.19%和11.90%。
英文摘要:
      A novel Fabry-Perot Resonant Antenna(FPRA) is proposed,which utilizes a multi-layer dielectric superstrate to enhance its gain and aperture efficiency. This multilayer superstrate is fabricated by assembling several dielectric plates with different thicknesses and areas. This FPRA works at 5.8 GHz,employs a patch antenna as its feed,and assembles three Teflon plates with different thicknesses(1 mm,1 mm and 1.5 mm) and diameters(160 mm,130 mm and 120 mm) but a same relative permittivity of 16 to be its superstrate. A prototype is fabricated and measured. The measurement results agree well with the simulation ones, and show,in comparison with the commonly adopted single-layer superstrate,the proposed multi-layer superstrate improves the F–P resonant antenna’s gain from 18.2 dBi to 19.1 dBi at 5.8 GHz,correspondingly enhances the aperture efficiency from 70.02% to 86.14%, additionally,slightly increases the antenna’s |S11|<-10 dB impedance bandwidth and 3 dB gain bandwidth,which are 8.19% and 11.90% respectively.
引用本文:刘士杰,陈 星.基于多层介质覆盖层的高增益Fabry-Perot天线设计[J].太赫兹科学与电子信息学报,2018,16(3):486~489
DOI:10.11805/TKYDA201803.0486
学科分类代码:
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