發(fā)布時間：2018-06-19 12:56

  本文選題：手機天線 + 寬帶化　； 參考：《北京郵電大學(xué)》2014年碩士論文

【摘要】：隨著移動通信的飛速發(fā)展,越來越多的無線功能被加入到了手機之中,對手機天線的性能提出了越來越高的要求。同時由于手機天線的小型化,寬帶化受到固有因素的限制,發(fā)展比較困難。因此小型化,寬帶化的天線成為了手機設(shè)計中的一個瓶頸,如何設(shè)計出電性能好,受周圍環(huán)境影響小,覆蓋制式多的手機天線受到越來越多的重視。本論文對小型天線的寬帶化進行了深入的研究,總結(jié)了天線寬帶化常用的技術(shù),并提出了兩種新穎的寬帶天線的設(shè)計。 第一章簡要介紹了國內(nèi)外關(guān)于電小天線的理論研究現(xiàn)狀,寬帶匹配網(wǎng)絡(luò)的研究現(xiàn)狀以及實際應(yīng)用情況,并總結(jié)了當(dāng)前手機天線設(shè)計中面臨的主要挑戰(zhàn)。 第二章主要介紹了手機天線的主要性能參數(shù),設(shè)計指標(biāo),并對手機天線主要指標(biāo)的測量方法進行了比較詳細的介紹。 第三章詳細介紹了手機天線的常見形式,以及天線輻射體的常見分析方法,包括解析分析法和數(shù)值分析法。并在閱讀文獻的基礎(chǔ)上總結(jié)了常見的微帶天線的寬頻帶設(shè)計技術(shù)。最后簡要介紹了天線的計算機輔助設(shè)計。 第四章詳細分析了手機天線的匹配技術(shù),介紹了匹配的解析理論的發(fā)展,以及計算機數(shù)值技術(shù)用于匹配網(wǎng)絡(luò)設(shè)計的發(fā)展。簡要介紹了Smith圓圖,并著重分析了基于Smith圓圖的匹配網(wǎng)絡(luò)設(shè)計,包括單支路匹配,雙支路匹配,以及更高支路匹配的方法,以及雙頻天線的匹配方法。 第五章介紹了一些其他的非常規(guī)的寬帶天線技術(shù),包括頻段可重構(gòu)天線,有源接收天線,非福斯特電路做匹配網(wǎng)絡(luò)的天線,以及新近出現(xiàn)的一些用于手機上的自動電調(diào)諧技術(shù)。 第六章基于前面對于寬帶天線以及寬帶匹配網(wǎng)絡(luò)的分析,綜合應(yīng)用上述寬帶技術(shù),設(shè)計了兩款適用于手機的寬帶天線,對設(shè)計的天線進行了仿真,并做了實際樣品進行了測試。結(jié)果表明每款天線都可以達到五頻的要求,可以在手機上使用,滿足日益增長的帶寬需要。 最后一章對本文的工作進行了總結(jié),并指出了工作的不足,以及將來的努力方向。
[Abstract]:With the rapid development of mobile communication, more and more wireless functions are added to the mobile phone. At the same time, due to the miniaturization of mobile antenna, broadband is restricted by inherent factors, so it is difficult to develop. Therefore, miniaturization, broadband antenna has become a bottleneck in mobile phone design, how to design a good electrical performance, less affected by the surrounding environment, more and more attention has been paid to the mobile phone antenna with more coverage. In this paper, the broadband antenna of small antenna is studied deeply, the common technology of broadband antenna is summarized, and two novel broadband antennas are designed. The first chapter briefly introduces the domestic and international research status of small antenna theory, broadband matching network research status and practical application, and summarizes the main challenges in the design of mobile phone antenna. In the second chapter, the main performance parameters and design indexes of mobile phone antenna are introduced in detail, and the measuring methods of the main parameters of mobile phone antenna are introduced in detail. In the third chapter, the common forms of mobile phone antenna and the common analytical methods of antenna radiator are introduced in detail, including analytical analysis method and numerical analysis method. On the basis of reading literature, the paper summarizes the common broadband design technology of microstrip antenna. Finally, the computer aided design of antenna is briefly introduced. In chapter 4, the matching technology of mobile phone antenna is analyzed in detail, and the development of the analytical theory of matching and the development of computer numerical technology used in the design of matching network are introduced. This paper briefly introduces Smith circle diagram, and emphatically analyzes the design of matching network based on Smith circle graph, including single branch matching, double branch matching, and higher branch matching, as well as the matching method of dual-frequency antenna. In chapter 5, we introduce some other unconventional broadband antenna technologies, including frequency band reconfigurable antenna, active receiving antenna, non-Foster circuit antenna for matching network, and some newly developed automatic electric tuning techniques for mobile phones. In chapter 6, based on the analysis of broadband antenna and broadband matching network, two wideband antennas suitable for mobile phone are designed and simulated, and the actual samples are tested. The results show that each antenna can meet the requirement of five-frequency and can be used on mobile phone to meet the increasing bandwidth requirement. The last chapter summarizes the work of this paper and points out the shortcomings of the work and the direction of future efforts.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN828.6

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本文編號：2039963