本文選題：手機(jī)天線 + 4G��； 參考：《西南交通大學(xué)》2014年碩士論文

【摘要】：如今,手機(jī)移動(dòng)通信早已經(jīng)邁進(jìn)3G時(shí)代,并開(kāi)始向4G通信系統(tǒng)過(guò)渡。為滿足人們對(duì)手機(jī)功能越來(lái)越多的需求,如高速數(shù)據(jù)傳輸、藍(lán)牙、4G LTE等,天線設(shè)計(jì)趨勢(shì)的方向轉(zhuǎn)變?yōu)椴粩嗤卣固炀�的帶寬。然而超寬帶天線的低頻都會(huì)受到天線尺寸的限制,因此如何在特定空間內(nèi)設(shè)計(jì)出帶寬足夠?qū)挼奶炀�是業(yè)界的一大難題。另一方面,現(xiàn)代集成電路技術(shù)和工藝的迅猛發(fā)展使得電子產(chǎn)品也變得越來(lái)越小,其中天線作為無(wú)線通信設(shè)備中的終端部件,對(duì)小型化的實(shí)現(xiàn)亦是迫在眉睫。另外,手機(jī)輻射對(duì)人體造成的安全問(wèn)題是大家關(guān)心的,SAR值已成為業(yè)界關(guān)心的強(qiáng)制性指標(biāo)。 首先,我們?cè)谟邢蘅臻g內(nèi)的適當(dāng)位置上設(shè)計(jì)出能覆蓋WLAN雙頻段的天線,并對(duì)其方向圖和效率等其他指標(biāo)進(jìn)行研究。之后對(duì)天線進(jìn)行實(shí)物加工,對(duì)其電性能進(jìn)行驗(yàn)證。 文中利用PIFA.單極子天線、loop等結(jié)構(gòu)自身的特性,并利用耦合饋電、增加匹配網(wǎng)絡(luò)等方式來(lái)增加天線帶寬,在天線的兩端分別設(shè)計(jì)能覆蓋新增LTE頻段的天線。設(shè)計(jì)的主天線支持LTE700/GSM850/900/DCS/PCS/UMTS/LTE2300/WiMax2500頻段,副天線支持GSM900/DCS/PCS/UMTS/LTE2300頻段。后期對(duì)主天線進(jìn)行了實(shí)物加工,對(duì)其帶寬、方向圖、增益和效率等進(jìn)行了測(cè)試。 對(duì)由主天線和副天線的基本結(jié)構(gòu)組成的LTE MIMO進(jìn)行研究,對(duì)其帶寬、隔離度和相關(guān)系數(shù)等值進(jìn)行仿真分析,通過(guò)轉(zhuǎn)換位置和變換天線形狀等方式使得各項(xiàng)指標(biāo)均達(dá)到平衡進(jìn)而完成整個(gè)系統(tǒng)的設(shè)計(jì)。
[Abstract]:Today, mobile phone communication has entered the 3G era, and began to transition to 4G communication system. In order to meet the increasing demand for mobile phone functions, such as high-speed data transmission, Bluetooth 4G LTE and so on, the trend of antenna design is changing to expand the bandwidth of antenna. However, the low frequency of UWB antenna is limited by the antenna size, so how to design a wide enough bandwidth antenna in a specific space is a big problem in the industry. On the other hand, with the rapid development of modern integrated circuit technology and technology, electronic products become smaller and smaller. Antenna, as the terminal part of wireless communication equipment, is urgent to realize miniaturization. In addition, the safety problem caused by mobile phone radiation has become a mandatory target of concern to the industry. First of all, we design the antenna which can cover the dual band of WLAN in the proper position in the finite space, and study the pattern and efficiency of the antenna. After that, the antenna is processed in kind and its electrical performance is verified. PIFA. The characteristics of monopole antenna loop and other structures are analyzed. The coupling feed and matching network are used to increase the bandwidth of the antenna. The antennas which can cover the new LTE band are designed at each end of the antenna. The main antenna is designed to support the LTE700/GSM850/900/DCS/PCS/UMTS/LTE2300/WiMax2500 band and the secondary antenna to support the GSM900/DCS/PCS/UMTS/LTE2300 band. The main antenna was processed and its bandwidth, pattern, gain and efficiency were tested. The LTE MIMO, which is composed of the main antenna and the secondary antenna, is studied, and its bandwidth, isolation and correlation coefficient are simulated and analyzed. By changing the position and the shape of the antenna, all the indexes are balanced and the design of the whole system is completed.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN929.53

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