本文關(guān)鍵詞：無(wú)線通信系統(tǒng)中的小型化可重構(gòu)天線研究　出處：《西安電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 小型化 LTE 手機(jī)天線 超寬帶天線 陷波天線 頻率可重構(gòu)

【摘要】：目前,隨著無(wú)線通信技術(shù)的發(fā)展和完善,無(wú)線終端產(chǎn)品也越來(lái)越向高集成度、高性能、多功能方向發(fā)展,這就使得無(wú)線終端產(chǎn)品天線趨向于小型化、寬帶、高集成度、高性能。伴隨著LTE標(biāo)準(zhǔn)的發(fā)展和推廣,LTE手機(jī)得到了廣泛的應(yīng)用和普及,這使得LTE手機(jī)天線研究成為科研工作者們新的研究熱點(diǎn)。同時(shí),從頻段覆蓋上來(lái)說(shuō),在覆蓋原有2G、3G頻段外還必須覆蓋到4G頻段,這就要求天線具有寬頻帶特性,這將進(jìn)一步加劇手機(jī)天線的設(shè)計(jì)難度。此外,人們對(duì)于無(wú)線通信系統(tǒng)中通信容量、通信速度、通信安全性等諸多方面的需求不斷增加,電磁波頻譜也出現(xiàn)了嚴(yán)重的擁堵,頻譜資源的使用受到嚴(yán)重的限制和制約。超寬帶天線、陷波天線及可重構(gòu)天線的提出在一定程度上大大提高了電磁波頻譜資源的使用。本文正是基于現(xiàn)代無(wú)線通信系統(tǒng)的發(fā)展趨勢(shì)和需求,對(duì)無(wú)線終端系統(tǒng)中小型化、多頻段、可重構(gòu)、高性能天線設(shè)計(jì)進(jìn)行了初步嘗試和研究。本文在開篇主要介紹了LTE手機(jī)天線、超寬帶可重構(gòu)陷波天線的研究背景和研究現(xiàn)狀,為本文的整體設(shè)計(jì)提供了現(xiàn)實(shí)基礎(chǔ)。并且簡(jiǎn)要的介紹了兩款比較經(jīng)典的天線形式(單極子天線和對(duì)稱振子天線)以及天線的幾個(gè)關(guān)鍵參數(shù),這一部分作為本文的理論基礎(chǔ)。本文主要是結(jié)合常規(guī)LTE手機(jī)天線設(shè)計(jì)方法及天線形式,創(chuàng)造性地設(shè)計(jì)了能夠覆蓋GSM850/900、DCS1800、PCS1900、UTMS2100及4G頻段的小型化、寬頻段、高性能的手機(jī)天線。天線尺寸大小為9mm×35mm×3mm,通過(guò)采用單極子耦合饋電、短路枝節(jié)加載、地回路利用及集總電感元件的加載實(shí)現(xiàn)了手機(jī)天線的寬頻帶、低頻化特性,頻段覆蓋824MHz-960MHz、1710MHz-2690MHz。天線具有較好的類單極子方向圖特性,并且具有良好的輻射效率,天線在低頻段的輻射效率達(dá)到50%以上,在高頻段達(dá)到95%以上。特別地,為了模擬手機(jī)的實(shí)際環(huán)境,仿真時(shí)在天線基板外層增加了厚度為1mm的塑料殼體(其中塑料殼體的的相對(duì)介電常數(shù)?3r?,損耗正切值?01.0tan?)。最后,對(duì)本文所提出來(lái)的天線進(jìn)行了加工和測(cè)試,并且將測(cè)試結(jié)果和仿真結(jié)果進(jìn)行對(duì)比分析,得到測(cè)試和仿真結(jié)果具有較好的一致性。本文研究分析了一款小型化超寬帶天線,天線結(jié)構(gòu)為共面波導(dǎo)饋電的圓盤單極子,通過(guò)在天線輻射體四周額外加載齒輪型結(jié)構(gòu),延展天線電流路徑來(lái)實(shí)現(xiàn)天線的小型化特性。超寬帶天線頻段覆蓋3.1-13.2GHz,整個(gè)頻帶內(nèi)天線具有較好的駐波特性、輻射方向圖穩(wěn)定性等,天線的相對(duì)帶寬達(dá)到了124%。在本文設(shè)計(jì)超寬帶天線基礎(chǔ)之上,結(jié)合陷波特性思想,通過(guò)在天線輻射單元上刻蝕C型槽線和加載寄生單元,使其在IEEE 802.1a(5.15-5.35GHz、5.725-5.825GHz)、HIPERLAN/2(5.15-5.35GHz、5.47-5.725GHz)、C-Band(3.7-4.2GHz)產(chǎn)生單頻陷波特性和雙頻陷波特性,該天線具有較好的陷波特性。在此基礎(chǔ)上,進(jìn)一步結(jié)合可重構(gòu)思想,設(shè)計(jì)了一款在5-6GHz實(shí)現(xiàn)頻率可重構(gòu)的超寬帶陷波天線。本文主要采用PIN開關(guān),通過(guò)控制開關(guān)的通斷來(lái)控制結(jié)構(gòu)單元的電流路徑,從而實(shí)現(xiàn)天線的陷波頻率可重構(gòu)特性。本文提出的小型化、可重構(gòu)、多頻帶、寬頻帶天線在無(wú)線通信系統(tǒng)中具有較好現(xiàn)實(shí)應(yīng)用前景,為下一代移動(dòng)通信的發(fā)展奠定了基礎(chǔ)。
[Abstract]:At present, with the development of wireless communication technology and improvement of wireless terminal products are increasingly high degree of integration, high performance, multi direction, which makes the wireless terminal antenna products tend to miniaturization, broadband, high integration, high performance. With the development and popularization of LTE standard, LTE mobile phone to get the extensive application and popularization, which makes the research of LTE mobile phone antenna has become the hotspot of scientific research workers. At the same time, from the band coverage, coverage in the original 2G, 3G band must also cover the 4G band, which requires the antenna with broadband characteristics, which will further aggravate the difficulty of design of mobile phone antenna. In addition, the capacity of communication in a wireless communication system, communication speed, communication security and other aspects of the increasing demand, the electromagnetic spectrum also appeared serious congestion, the use of spectrum resources is severely restricted and Restricted. Ultra wideband antenna, proposed notch antenna and reconfigurable antenna to a certain extent, greatly improving the electromagnetic spectrum resources. This is the trend of development of modern wireless communication system and based on the demand of wireless terminal system miniaturization, multi band, reconfigurable, has carried on the preliminary design of high performance antenna try and research. This article mainly introduced the LTE mobile phone antenna, research background and research status of reconfigurable antenna can be ultra wideband notch, provide a realistic basis for the overall design of this paper. And briefly introduced two classic antenna (monopole antenna and dipole antenna) and several antenna the key parameters, this part is the theoretical basis of this paper. This paper is combined with conventional LTE mobile phone antenna design method and antenna, creatively designed to cover the GSM850/900, DCS1800, PCS190 0, small, UTMS2100 and 4G band broadband, mobile phone antenna with high performance. The antenna size is 9mm * 35mm * 3mm, by using the coupled monopole, short stub loaded, and loading the circuit using lumped inductor to achieve broadband mobile phone antenna with low frequency characteristic, frequency covering 824MHz-960MHz, 1710MHz-2690MHz. has better antenna monopole antenna, and has good radiation efficiency, the antenna radiation efficiency reached above 50% in the low frequency, high frequency of more than 95%. In particular, in order to simulate the actual environment of the mobile phone, the simulation of the antenna substrate increases the thickness of outer plastic shell 1mm (the plastic shell of the relative dielectric constant, loss tangent value of? 3R?? 01.0tan?). Finally, the antenna proposed in this paper were fabricated and tested, and the test results and the simulation results are compared By analysis, test and simulation results have good consistency. This paper analyzes a miniaturized ultra wideband antenna, antenna structure for CPW fed monopole antenna in the disk, through the radiator around the additional gear type structure, miniaturization characteristics of extended antenna current path to achieve antenna ultra wideband antenna band coverage. 3.1-13.2GHz, the entire band antenna has good characteristics of standing wave, the radiation pattern of stability, the relative bandwidth of the antenna reached 124%. in the design of ultra wideband antenna based on combination of notch performance thought, through radiation etching C slot line unit and loading parasitic elements in the antenna, the IEEE (5.15-5.35GHz, 802.1a 5.725-5.825GHz), HIPERLAN/2 (5.15-5.35GHz, 5.47-5.725GHz), C-Band (3.7-4.2GHz) to produce a single frequency notch and notch characteristics of dual frequency characteristic, the antenna has good notch Characteristics. On this basis, combining with the reconfiguration idea, design a frequency reconfigurable 5-6GHz in UWB antenna. This paper mainly uses the PIN switch through the control switch to control the structural unit of the current path, so as to realize the notch frequency reconfigurable antenna. The characteristics of miniaturization. The proposed reconfigurable, multi band, broadband antenna has good practical application prospect in wireless communication system, which laid the foundation for the development of the next generation mobile communication.

【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN828

【共引文獻(xiàn)】

相關(guān)期刊論文 前1條

1 CHEN Zhi;BAN Yongling;YING Lijun;CHEN Jinhua;;Coupled-fed Printed PIFA for Internal Eight-Band LTE/GSM/UMTS Mobile Phone[J];Chinese Journal of Electronics;2014年01期

相關(guān)碩士學(xué)位論文 前3條

1 周林亞;移動(dòng)終端天線及MIMO多天線研究[D];西安電子科技大學(xué);2013年

2 景躍騏;多頻段LTE手機(jī)天線研究[D];西安電子科技大學(xué);2014年

3 夏星星;移動(dòng)終端寬帶MIMO天線研究[D];華南理工大學(xué);2014年

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本文編號(hào)：1439190