【摘要】：隨著移動(dòng)通信進(jìn)入4G時(shí)代,消費(fèi)者對(duì)移動(dòng)通信終端的要求日益增多。而這將使移動(dòng)終端中的天線設(shè)計(jì)變得更加困難。移動(dòng)終端中高度集成的功能使得天線覆蓋頻帶更寬,使得多天線單元間必須具有良好的隔離度以保證性能。輕薄化的外觀趨勢(shì)使天線設(shè)計(jì)空間更為有限,尤其使最低頻諧振的實(shí)現(xiàn)更具挑戰(zhàn)。近期金屬質(zhì)感手機(jī)的流行使得內(nèi)置手機(jī)天線性能受到金屬邊框結(jié)構(gòu)的極大影響。對(duì)表征人體吸收電磁輻射的參數(shù)SAR的控制也引起極大重視。首先,在符合如今流行的手機(jī)尺寸的基板上設(shè)計(jì)出一款覆蓋WLAN全頻段的天線和一款可覆蓋LTE700的三頻段天線。對(duì)頻帶寬度、輻射方向圖、效率、電流分布等指標(biāo)進(jìn)行研究,并將WLAN天線的設(shè)計(jì)加工實(shí)物,進(jìn)行測(cè)試驗(yàn)證。其次,設(shè)計(jì)一款覆蓋移動(dòng)通信高頻段的LTE MIMO天線,通過耦合饋電方式增大帶寬。對(duì)天線的頻帶寬度、輻射方向圖、效率、增益、電流分布等進(jìn)行研究,并對(duì)比天線單元在基板上的兩種不同的安放位置,研究位置對(duì)天線單元間隔離度和相關(guān)系數(shù)的影響。依照設(shè)計(jì)對(duì)天線進(jìn)行加工實(shí)測(cè),所得測(cè)試結(jié)果與仿真結(jié)果吻合。最后,設(shè)計(jì)一款應(yīng)用于帶有閉合金屬框架結(jié)構(gòu)手機(jī)的天線,利用金屬邊框和內(nèi)置天線的共同作用來覆蓋移動(dòng)通信七頻段。在設(shè)計(jì)過程中還考慮到手機(jī)實(shí)際的復(fù)雜環(huán)境,加入多種部件以更接近真實(shí)。對(duì)所設(shè)計(jì)天線在自由空間、頭模型、頭和手模型三種狀態(tài)下進(jìn)行研究,包括頻帶寬度、效率等重要參數(shù)。并對(duì)設(shè)計(jì)天線的SAR值進(jìn)行模擬研究。
[Abstract]:With the entry of mobile communication into 4G era, consumers have more and more requirements for mobile communication terminals. This will make the antenna design in the mobile terminal more difficult. The highly integrated function in the mobile terminal makes the antenna coverage band wider, so that the multi-antenna elements must have good isolation to ensure the performance. The lightweight appearance trend makes the antenna design space more limited, especially makes the realization of minimum frequency resonance more challenging. Recently, the popularity of metal texture mobile phone makes the antenna performance of built-in mobile phone greatly affected by the metal frame structure. The control of the parameter SAR, which represents the absorption of electromagnetic radiation by human body, has also attracted great attention. First, a full-band antenna covering WLAN and a three-band antenna covering LTE700 are designed on a substrate that fits the size of today's popular mobile phone. The frequency band width, radiation pattern, efficiency, current distribution and other indexes are studied, and the design and processing of WLAN antenna are tested and verified. Secondly, a LTE MIMO antenna covering the high frequency band of mobile communication is designed, and the bandwidth is increased by coupling feed. The frequency band width, radiation pattern, efficiency, gain and current distribution of the antenna are studied, and the effects of the position on the interval distance and correlation coefficient of the antenna element are compared with the two different placement positions of the antenna element on the substrate. According to the design, the antenna is processed and measured, and the test results are in good agreement with the simulation results. Finally, an antenna with closed metal frame structure is designed, which uses the combination of metal frame and built-in antenna to cover the seven-band of mobile communication. In the design process, the actual complex environment of the mobile phone is also taken into account, and a variety of components are added to get closer to reality. The designed antenna is studied in three states: free space, head model, head model and hand model, including frequency band width, efficiency and other important parameters. The SAR value of the designed antenna is simulated and studied.
【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】：2015
【分類號(hào)】：TN828.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 伍韜;閆麗萍;劉長軍;付方洋;;一種用于WLAN的寬頻帶微帶天線[J];信息與電子工程;2007年02期

2 施華,舒琳,王均宏;手機(jī)天線的研究進(jìn)展[J];移動(dòng)通信;2002年11期

相關(guān)碩士學(xué)位論文 前1條

1 萬慷;應(yīng)用于4G通信的LTE手機(jī)天線研究[D];南京郵電大學(xué);2012年

，

本文編號(hào)：2499828