本文選題：北斗衛(wèi)星導(dǎo)航系統(tǒng) + 四臂螺旋天線��； 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：近年來,無線通信事業(yè)高速發(fā)展,因此,衛(wèi)星導(dǎo)航定位系統(tǒng)在人類社會生產(chǎn)、生活中所起的作用便顯得越來越重要。經(jīng)過多年的研發(fā)研究,我國的北斗衛(wèi)星導(dǎo)航系統(tǒng)正在保質(zhì)保速地建設(shè)并已逐漸投入使用。除了在軍事領(lǐng)域的使用外,北斗衛(wèi)星導(dǎo)航系統(tǒng)在民用領(lǐng)域也得到了迅速的發(fā)展,特別是在汽車導(dǎo)航系統(tǒng)和便攜式移動終端定位系統(tǒng)這兩個方面。所以,對于衛(wèi)星定位系統(tǒng)中的終端天線的研究具有重要的價值和意義,尤其是天線的多頻化技術(shù)和小型化技術(shù)。適用于衛(wèi)星終端天線的形式多種多樣,在眾多的天線形式中,四臂螺旋天線因?yàn)閾碛休^好的寬波束圓極化特性、較好的低仰角增益以及易于實(shí)現(xiàn)小型化等優(yōu)點(diǎn),非常適合用來作為衛(wèi)星導(dǎo)航系統(tǒng)的終端天線。為了滿足衛(wèi)星導(dǎo)航系統(tǒng)的高集成度的要求,本文對四臂螺旋天線的小型化和多頻化技術(shù)以及饋電網(wǎng)絡(luò)的小型化、寬帶化技術(shù)做了相應(yīng)的研究。本文具體內(nèi)容安排如下:首先,本文簡述了北斗衛(wèi)星定位系統(tǒng)的發(fā)展和研究現(xiàn)狀;列舉了幾種常見的能夠作為衛(wèi)星終端天線使用的天線結(jié)構(gòu)形式和其各自的特點(diǎn),包括:四臂螺旋天線、微帶天線等�？偨Y(jié)了相關(guān)的文獻(xiàn),介紹了四臂螺旋天線的研究歷史和發(fā)展現(xiàn)狀,對四臂螺旋天線的基本結(jié)構(gòu)和輻射機(jī)理做了詳細(xì)介紹,為天線的設(shè)計提供了充足的理論依據(jù)。其次,基于對四臂螺旋天線的結(jié)構(gòu)分析及理論研究,設(shè)計了一款傳統(tǒng)的空氣加載的四臂螺旋天線,對該天線的仿真、建模做了詳細(xì)的說明,另外,對饋電網(wǎng)絡(luò)的性能對四臂螺旋天線的圓極化性能的影響做了詳細(xì)的仿真說明。然后,設(shè)計了一款空氣加載的小型化印刷共形四臂螺旋天線,其工作頻率為北斗2號B1頻段(1561. 098MHZ),為了實(shí)現(xiàn)該天線的小型化,本文分別對天線螺旋臂和饋電網(wǎng)絡(luò)進(jìn)行了小型化設(shè)計,天線高度為40mm,螺旋直徑為25. 65mm。最后,設(shè)計了一款基于雙層饋電網(wǎng)絡(luò)加載的小型化、雙頻化四臂螺旋天線,相比于一般的空氣加載的四臂螺旋天線,本文所設(shè)計的天線整體尺寸非常小:高度僅為26. 27mm,螺旋直徑為25. 65mm。文中給出了天線設(shè)計詳細(xì)過程,分析了天線的結(jié)構(gòu)變化對其雙頻特性及輻射特性的影響情況。
[Abstract]:In recent years, wireless communication has developed rapidly. Therefore, the role of satellite navigation and positioning system in human society is becoming more and more important. After years of research and development, the Beidou satellite navigation system in China is building and gradually being put into use. In addition to the use of military field, the Beidou guard The satellite navigation system has also developed rapidly in the civil field, especially in the two aspects of the vehicle navigation system and the portable mobile terminal positioning system. Therefore, the research on the terminal antenna in the satellite positioning system is of great value and significance, especially the multi frequency and miniaturization of the antenna. It is suitable for the satellite terminal. The form of end antenna is varied. In many forms of antenna, four arm spiral antenna has the advantages of good wide beam polarization, good low elevation gain and easy to realize miniaturization. It is very suitable to be used as terminal antenna of satellite navigation system. It is the requirement of high integration of satellite navigation system. In this paper, the miniaturization and multi frequency technology of the four arm spiral antenna, the miniaturization of the feed network and the broadband technology are studied. The specific contents of this paper are as follows: first, the development and research status of the Beidou satellite positioning system are briefly described, and several commonly seen antenna nodes that can be used as satellite terminal antennas are listed. The structure form and its respective characteristics include: four arm spiral antenna, microstrip antenna and so on. The related literature is summarized, the research history and development status of four arm spiral antenna are introduced. The basic structure and radiation mechanism of the four arm spiral antenna are introduced in detail, which provide the sufficient theoretical basis for the antenna design. Secondly, based on the four arms. The structure analysis and theoretical study of spiral antenna design a traditional air loaded four arm spiral antenna. The simulation and modeling of the antenna are explained in detail. In addition, the influence of the performance of the feed network on the circular polarization performance of the four arm spiral antenna is detailed. Then, a small air loading is designed. In order to realize the miniaturization of the antenna, the four arm spiral antenna with four arm spiral antennas is designed for miniaturization of the antenna spiral arm and feed network. The height of the antenna is 40mm and the diameter of the helix is 25. 65mm., and a small size feeding network based on the double layer feed network is designed. The dual frequency four arm spiral antenna is compared with the four arm spiral antenna with a general air load. The overall size of the antenna designed in this paper is very small: the height of the antenna is only 26. 27mm and the spiral diameter is 25. 65mm.. The detailed process of antenna design is given. The influence of the structure modification of the antenna on its dual frequency and radiation characteristics is analyzed.

【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】：TN823.31

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本文編號：1856835