【摘要】：近些年,隨著技術日新月異的變化和強勁用戶需求的驅動,移動通信行業(yè)在全世界保持著其迅猛的發(fā)展勢頭。移動通信終端已經成為人與信息世界溝通的橋梁。由于人們在追求手機豐富功能的同時也更加關注手機的美感和質感,所以金屬機身的手機也越來越受消費者的青睞。但是金屬機身帶來的美感和質感會以大大降低手機天線性能為代價,這也成為了制約天線結構創(chuàng)新的一個重要因素。鑒于以上原因,研設符合當前工業(yè)標準的完整金屬邊框的智能機天線是極其必要的。本文第一部分將全面闡述全金屬邊框手機天線的設計背景、現(xiàn)狀和研發(fā)方向,并詳細系統(tǒng)地給出了手機天線設計所需的基本知識,接著總結了在手機天線設計過程中所用到的幾種基本天線模型以及天線阻抗匹配調節(jié)、天線小型化和諧振原理分析的常用方法。本文第二部分提出了兩款基于匹配電路的全金屬邊框智能機天線設計方案。方案的主要特點是金屬邊框沒有斷點,并將匹配電路應用到了金屬邊框不斷點智能機天線的設計中。所設計的兩款智能機天線,其中一款其帶寬能夠覆蓋824 960MHz和1710 2170 MHz(VSWR小于3),另一款帶寬能夠覆蓋824 960 MHz和1710 2690 MHz。本文的第三部分提出了一款基于連續(xù)金屬邊框不斷點的七頻窄邊框智能機天線設計方案。設計的核心是同時結合了可重構的環(huán)天線和寄生單極子天線兩種天線的優(yōu)點。該設計所占地板凈空面積僅為945 mm2,設計的天線其帶寬可以覆蓋GSM850/900、DCS/PCS/UMTS2100和LTE2300/2500等頻帶。本文的第四部分提出了一款高隔離度的雙環(huán)結構的MIMO天線。該天線主要采用了特征模正交技術和介質引入微擾促進模式融合的技術。該設計能完全覆蓋GSM850/900頻段,且在整個帶寬范圍內的隔離度都大于15dB,仿真效率在60%以上。本文設計了三款具有全金屬邊框結構的應用于智能機天線方案,從測試數(shù)據來看,完全符合現(xiàn)在智能機的基本標準。本文的最后是對全文的總結,分析了所設計的天線方案的合理性及學術工程價值,并給出了本文存在的不足及后續(xù)的改進工作。
[Abstract]:In recent years, with the rapid change of technology and the drive of strong user demand, the mobile communication industry has maintained its rapid development momentum in the world. Mobile communication terminal has become a bridge between human and information world. As people pursue the rich function of mobile phone and pay more attention to the beauty and texture of mobile phone, the metal fuselage phone is more and more popular with consumers. However, the aesthetic and texture of the metal fuselage will greatly reduce the antenna performance of mobile phone, which has also become an important factor restricting the antenna structure innovation. In view of the above reasons, it is very necessary to develop a full metal frame smart antenna in line with the current industrial standards. In the first part of this paper, the design background, current situation and research and development direction of all-metal frame mobile phone antenna will be fully described, and the basic knowledge required for mobile phone antenna design will be given in detail and systematically. Then several basic antenna models used in the design of mobile phone antenna are summarized as well as the commonly used methods of antenna impedance matching adjustment antenna miniaturization and resonance principle analysis. In the second part, two designs of all-metal frame smart machine antenna based on matching circuit are presented. The main feature of the scheme is that there are no breakpoints in the metal frame, and the matching circuit is applied to the antenna design of the metal frame continuous point smart machine. Two smart-phone antennas are designed, one of which has bandwidth coverage of 824 960MHz and 1710 and 2170 MHz (VSWR less than 3), and the other can cover 824-960MHz and 1710-1710-2690-MHz. In the third part of this paper, a seven-band narrow frame smart machine antenna based on continuous metal frame points is proposed. The core of the design is to combine the advantages of both the reconfigurable loop antenna and the parasitic monopole antenna. The design covers only 945 mm2, antenna whose bandwidth can cover frequency bands such as GSM850/900,DCS/PCS/UMTS2100 and LTE2300/2500. In the fourth part of this paper, a double-loop MIMO antenna with high isolation is proposed. The antenna mainly adopts the characteristic mode orthogonality technique and the dielectric introduction perturbation to promote the mode fusion technology. The design can cover the GSM850/900 band completely, and the isolation degree is more than 15 dB in the whole bandwidth range, and the simulation efficiency is more than 60%. In this paper, three kinds of antenna schemes with all-metal frame structure are designed. From the test data, they accord with the basic standard of smart machine. At the end of this paper, the rationality and academic engineering value of the designed antenna scheme are analyzed, and the shortcomings of this paper and the subsequent improvement work are given.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN828.6

【參考文獻】

相關碩士學位論文 前1條

1 強云飛;應用于LTE智能機的窄邊框天線技術研究[D];電子科技大學;2015年

，

本文編號：2457447