【摘要】：隨著移動(dòng)通信技術(shù)的高速發(fā)展,第四代移動(dòng)通信系統(tǒng)技術(shù)(4G)已經(jīng)進(jìn)入了商業(yè)化階段,因此需要設(shè)計(jì)出尺寸小、性能優(yōu)良,并且能夠支持多個(gè)通信頻段的終端天線(xiàn)。LTCC天線(xiàn)因其體積小、性能優(yōu)越、不易被損壞等優(yōu)點(diǎn),近年來(lái)成為了很多學(xué)者研究的熱點(diǎn)。本文采用LTCC技術(shù)的優(yōu)勢(shì),設(shè)計(jì)了兩款結(jié)構(gòu)新穎的多頻帶天線(xiàn)。本文的主要工作有:1.首先介紹了LTCC天線(xiàn)發(fā)展現(xiàn)狀。接下來(lái)介紹了天線(xiàn)的一些基本技術(shù)指標(biāo),著重介紹了天線(xiàn)小型化以及實(shí)現(xiàn)多頻帶的一些方法,為后面的章節(jié)做了理論準(zhǔn)備。2.結(jié)合LTCC的特點(diǎn),采用環(huán)形繞線(xiàn)的結(jié)構(gòu)形式,提出了一款適用于GSM900、DCS1800、TD-SCDMA、TD-LTE的多頻帶終端天線(xiàn)。本文較為詳細(xì)的闡述了該天線(xiàn)的設(shè)計(jì)與實(shí)現(xiàn)過(guò)程,包括:天線(xiàn)各個(gè)通帶的逐一實(shí)現(xiàn),天線(xiàn)低頻帶寬的擴(kuò)展,天線(xiàn)反射系數(shù)的進(jìn)一步降低,以及天線(xiàn)測(cè)試結(jié)果的誤差分析。在距離天線(xiàn)底端0.1mm處引入一條環(huán)形線(xiàn),實(shí)現(xiàn)了一款雙通帶天線(xiàn)。在距天線(xiàn)頂端0.1mm處引入第二條枝節(jié),并通過(guò)金屬柱將上下兩金屬條連通,形成了一款三通帶天線(xiàn)。通過(guò)增加諧振枝以產(chǎn)生參差諧振的方法實(shí)現(xiàn)了天線(xiàn)低頻帶寬的擴(kuò)展。通過(guò)在天線(xiàn)饋電端加上一塊金屬片使得天線(xiàn)反射系數(shù)進(jìn)一步的降低。所有通帶內(nèi)天線(xiàn)的反射系數(shù)都小于-6dB。天線(xiàn)反射系數(shù)、方向圖及增益的測(cè)量結(jié)果都在誤差范圍內(nèi)。天線(xiàn)的最終尺寸為17.8mm×6mm×0.8mm。3.針對(duì)GSM900、TD-SCDMA、TD-LTE三個(gè)通信頻段,在螺旋曲折線(xiàn)結(jié)構(gòu)的基礎(chǔ)上,增加耦合結(jié)構(gòu)實(shí)現(xiàn)了LTCC天線(xiàn)的多頻帶。本文系統(tǒng)的分析了螺旋圈數(shù)、螺旋橫截面積、曲折線(xiàn)以及耦合輻射片位置對(duì)天線(xiàn)性能的影響。分析表明,螺旋圈數(shù)及耦合輻射片位置對(duì)天線(xiàn)諧振頻率有較大影響。最終設(shè)計(jì)的天線(xiàn)尺寸為16mm×5mm×1.2mm,GSM900頻帶內(nèi)天線(xiàn)反射系數(shù)小于-7.5dB,TD-SCDMA、TD-LTE頻帶內(nèi)反射系數(shù)小于-10dB。
[Abstract]:With the rapid development of mobile communication technology, the fourth generation mobile communication system (4G) technology has entered the stage of commercialization, so it is necessary to design small size and excellent performance. And the terminal antenna. LTCC antenna which can support multiple communication bands has become a hot research topic in recent years because of its small size, superior performance and not easy to be damaged. Based on the advantage of LTCC technology, two novel multi-band antennas are designed in this paper. The main work of this paper is: 1. Firstly, the development of LTCC antenna is introduced. Then some basic technical specifications of antenna are introduced, especially the miniaturization of antenna and some methods to realize multi-band. According to the characteristics of LTCC, a multi-band terminal antenna suitable for GSM900 DCS1800 TD-SCDMA-TD-LTE is proposed. In this paper, the design and implementation of the antenna are described in detail, including the realization of each band of the antenna, the expansion of the antenna's low frequency bandwidth, the further reduction of the antenna's reflection coefficient, and the error analysis of the antenna test results. A double pass band antenna is realized by introducing a ring line at the bottom of the antenna 0.1mm. The second branch is introduced from the top of the antenna 0.1mm, and the upper and lower metal strips are connected through the metal column to form a three-way band antenna. The antenna low frequency bandwidth is extended by adding resonance branches to produce staggered resonance. The antenna reflection coefficient is further reduced by adding a metal sheet to the antenna feed end. The reflection coefficient of all antennas in the passband is less than -6 dB. The measurement results of antenna reflection coefficient, pattern and gain are within the error range. The final size of the antenna is 17.8mm 脳 6mm 脳 0.8mm. 3. Aiming at the three communication bands of GSM900 TD-SCDMA-TD-LTE, the coupling structure is added to realize the multi-band of LTCC antenna on the basis of the spiral winding line structure. In this paper, the effects of the number of helical coils, spiral cross section, zigzag line and position of coupling radiator on the antenna performance are analyzed systematically. The analysis shows that the number of coils and the position of the coupling radiator have great influence on the resonant frequency of the antenna. The size of the designed antenna is 16mm 脳 5mm 脳 1.2 mm GSM 900 band antenna reflection coefficient is less than -7.5 dBU TD-SCDMA-TD-LTE frequency band reflection coefficient is less than -10 dB.
【學(xué)位授予單位】：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(lèi)號(hào)】：TN828.6

【共引文獻(xiàn)】

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本文編號(hào)：2193387