本文選題：Fabry-Perot諧振腔天線 + 寬帶��； 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：伴隨著通信領(lǐng)域技術(shù)的快速發(fā)展,人們對于高增益、小型化、低成本天線的需求也越來越大。法布里-珀羅(Fabry-Perot)諧振腔天線作為一類新型的平面透鏡天線,憑借其自身高增益等優(yōu)良特性引起了人們的廣泛關(guān)注。本文主要的研究工作和成果包含了以下的三個方面:(1)本論文基礎(chǔ)理論部分研究是基于Fabry-Perot諧振腔天線的工作的基本原理以及它的諧振工作條件。根據(jù)這些理論,設(shè)計了菱形縫隙FSS與EBG結(jié)構(gòu),使得諧振腔天線在8.5GHz和11.5GHz兩個頻段同時諧振工作,且天線的增益達到了16.2dBi。另外,該設(shè)計采用單同軸饋電簡化了饋源,且天線的剖面高度也降低到了六分之一個工作波長。(2)本文提出了將口徑耦合三角形圓極化微帶天線作為饋源應(yīng)用到Fabry-Perot諧振腔天線中去。結(jié)合對稱結(jié)構(gòu)的部分反射表面,該天線實現(xiàn)了高增益、圓極化的特性。通過優(yōu)化設(shè)計,天線的最高增益提高到了18.7dBi,高于普通饋源下的天線增益。該設(shè)計中,天線的3dB增益帶寬,-10dB阻抗帶寬以及3dB軸比帶寬均達到了3.5%以上。(3)由于諧振條件的制約,Fabry-Perot諧振腔天線的窄帶特性一直是該天線的不足之處。本論文提出了一種新型的部分反射表面結(jié)構(gòu)并應(yīng)用到Fabry-Perot天線中去,成功實現(xiàn)了寬帶特性。與傳統(tǒng)的寬帶Fabry-Perot天線相比,該設(shè)計只采用單諧振腔,天線的剖面高度得到了降低,且部分反射表面的反射特性也優(yōu)于傳統(tǒng)部分反射敷層。最后的測量結(jié)果與仿真結(jié)果近似,天線的最高增益可達到14.2dBi,-10d B阻抗帶寬以及3d B增益帶寬均達到了15%以上。
[Abstract]:With the rapid development of communication technology, the demand for high gain, miniaturization and low cost antennas is becoming more and more important. The Fabri Perot (Fabry-Perot) resonator antenna has attracted wide attention as a new type of planar lens antenna, with its excellent characteristics, such as self height gain. The results include the following three aspects: (1) the basic theory of this paper is based on the basic principle of the work of the Fabry-Perot resonator antenna and its resonant working conditions. According to these theories, the rhombus gap FSS and EBG structure are designed, which make the resonator antenna working at the same time in the two bands of 8.5GHz and 11.5GHz, and the antenna The gain is 16.2dBi.. The design uses a single coaxial feed to simplify the feed, and the profile height of the antenna is reduced to 1/6 working wavelengths. (2) the aperture coupled triangle circular polarized microstrip antenna is used as the feed to the antenna of the Fabry-Perot resonator. The antenna achieves high gain and circular polarization. By optimization, the maximum gain of the antenna is increased to 18.7dBi, higher than the antenna gain under the ordinary feed. In this design, the antenna's 3dB gain bandwidth, -10dB impedance bandwidth and 3dB axis ratio bandwidth are up to 3.5%. (3) the Fabry-Perot resonator is restricted by the resonance condition. The narrow band characteristic of the antenna has always been a shortcoming of the antenna. In this paper, a new type of partially reflective surface structure is proposed and applied to the Fabry-Perot antenna. The broadband characteristic is successfully realized. Compared with the traditional broadband Fabry-Perot antenna, the design only uses a single resonant cavity, and the profile height of the antenna is reduced, and partly inverse. The reflection characteristic of the surface is also superior to that of the traditional part of the reflection coating. The final measurement results are similar to the simulation results. The maximum gain of the antenna can reach 14.2dBi, the impedance bandwidth of the -10d B and the gain bandwidth of the 3D B are all up to 15%.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN820

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本文編號：1908796