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摘要法布里-珀罗（Fabry-Perot,F-P）谐振天线具有空馈平面低剖面结构，可以显著地提高天线的增益和口径效率，是高效率、高增益天线研究的一个新热点。并且以其结构简单、尺寸小、成本低廉、易于加工，特别是可以实现很高方向性等优点，在无线通信中应用越来越广泛。 F-P谐振器最初应用在光学领域。由于 F-P结构对电磁波传播具有选频的作用，当 2块板的间距符合谐振条件时，电磁波穿透 F-P后能同相叠加而增强，从而提高了增益、化波束宽度，起到类似聚焦透镜的作用。当其运用到天线中时，对提高天线的增益以及其他各项参数也起到了很明显的作用。 在天线的许多应用场景中，不仅仅要求其增益要高，对于其定向性，旁瓣电平，后向辐射等各方面的参数都有一定的要求。 本文在研究F-P谐振腔理论的同时，设计了一种采用U型缝隙贴片天线作为馈源天线，FSS结构作为覆层的Fabry-Perot谐振腔宽频印刷天线。 本文分析了F-P谐振腔天线的工作原理，以及各个参数对天线性能各方面的影响，从而更好的对天线进行优化改进。本文借助了HFSS仿真软件对天线模型进行仿真分析，从而得到了一系列的结果。30776
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关键字：Fabry-Perot谐振腔、高增益、低旁瓣、宽频带、U型贴片天线、FSS
Title High gain antenna based on Fabry-Perot resonator
Abstract Fabry-Perot resonant antenna with planar space fed low profile structure, can significantly improve the antenna gain and aperture efficiency, is a new hot spot in the high efficiency, high gain antenna is studied. And with the utility model has the advantages of simple structure, small size, low cost, easy processing, in particular, can achieve the advantages of high directivity, etc., in the wireless communication is used more and more widely. F-P resonator was initially applied in the optical field. Due to the Fabry Perot structure on the propagation of electromagnetic wave with frequency selection, when the distance between the two panels, consistent with the resonant conditions, electromagnetic wave after penetrating F-P to in-phase superposition and enhanced, so as to improve the gain, beam width, play a role in similar focusing lens. When applied to the antenna, to increase the gain of the antenna and other parameters also play a very significant role. Study the theory of F-P resonator at the same time, this paper designs a use U-slot patch antenna as a feed antenna FSS structures as a cladding of Fabry Perot resonator broadband printed antenna. This paper analyzes the working principle of F-P resonator antenna, and various parameters on all aspects of the performance of the antenna effect, thus better on the antenna were optimized and improved. With the help of the HFSS software simulation analysis of the antenna model, so as to obtain a series of results.
Keywords Fabry-Perot resonator High gain Low sidelobe Broadband U patch antenna FSS
目次
1绪论.1
1.1研究背景及意义.1
1.2发展与现状.2
1.3研究工具、使用软件.5
1.4本文主要研究内容.5
2Fabry-Perot谐振腔原理.6
2.1光学Fabry-Perot谐振腔.6
2.2Fabry-Perot谐振腔天线辐射机理.6
2.3Fabry-Perot谐振腔印刷天线.9
3Fabry-Perot谐振腔印刷天线的设计11
3.1宽频带馈源的设计.11
3.1.1微带天线基础.11
3.1.2U型贴片天线的设计12
3.2FSS覆层基础15
3.2.1FSS结构的电磁特性15
3.2.2FSS结构的应用16
3.3F-P谐振腔印刷天线的研究优化16
3.3.1采用FSS盖板后的天线情况16
3.3.2覆层单元阵列大小对天线性能的影响19
3.3.3覆层单元尺寸对天线性能的影响20
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