本文關(guān)鍵詞：應(yīng)用于移動(dòng)終端設(shè)備的天線設(shè)計(jì)　出處：《杭州電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 移動(dòng)終端 衛(wèi)星導(dǎo)航 分形 圓極化 多頻段

【摘要】：隨著移動(dòng)通信技術(shù)尤其是無線通信技術(shù)的迅猛發(fā)展，各種各樣的終端設(shè)備應(yīng)運(yùn)而生。天線作為移動(dòng)終端設(shè)備的重要組成部分，其特性直接決定著整個(gè)通信鏈路系統(tǒng)的性能優(yōu)劣。 目前，衛(wèi)星導(dǎo)航在民用領(lǐng)域市場(chǎng)不斷拓展，特別是伴隨著移動(dòng)互聯(lián)網(wǎng)的快速發(fā)展和智能手機(jī)的普及為衛(wèi)星定位服務(wù)的爆發(fā)奠定了堅(jiān)實(shí)的基礎(chǔ)。由于圓極化天線具有接收效率高、抗干擾性能強(qiáng)以及抗多徑反射等突出優(yōu)勢(shì)，因此近年來針對(duì)衛(wèi)星導(dǎo)航終端天線的研究主要聚焦于具備多頻段、圓極化和寬頻段的終端天線。分形天線是由迭代產(chǎn)生的，由于其自相似性，使得天線在多頻段工作變得更加容易實(shí)現(xiàn)；由于其空間填充性，使得天線尺寸能夠進(jìn)一步縮減。將分形天線的特性應(yīng)用于微帶天線的設(shè)計(jì)中，必然會(huì)極大地改善天線的性能。因此，對(duì)于分形天線的研究和應(yīng)用，必然有著非常廣闊的前景。 論文的主要工作如下： （1）首先詳細(xì)介紹了微帶天線的基本理論和分析方法，然后討論了微帶天線的圓極化實(shí)現(xiàn)和饋電方法，闡述了應(yīng)用于衛(wèi)星導(dǎo)航系統(tǒng)等移動(dòng)終端的圓極化天線的主要性能要求。 （2）其次針對(duì)衛(wèi)星導(dǎo)航天線的需求，設(shè)計(jì)了一款應(yīng)用于衛(wèi)星導(dǎo)航系統(tǒng)等移動(dòng)終端的雙頻段寬帶圓極化縫隙天線，工作在北斗導(dǎo)航衛(wèi)星系統(tǒng)的B1/S頻段，應(yīng)用電磁仿真軟件HFSS對(duì)其進(jìn)行優(yōu)化仿真，并在此基礎(chǔ)上制作了實(shí)物，測(cè)量結(jié)果和仿真結(jié)果基本一致。 （3）再次分析了Hilbert分形天線在手機(jī)通信領(lǐng)域的應(yīng)用，接著對(duì)一款小型化Hilbert分形多頻段PIFA天線在結(jié)構(gòu)設(shè)計(jì)上采用三種方案進(jìn)行了性能優(yōu)化。 （4）最后將分形技術(shù)應(yīng)用到微帶天線設(shè)計(jì)中，設(shè)計(jì)一種工作在GSM900、DCS1800以及ISM WLAN2.5GHz三個(gè)頻段的終端天線，，其中在2.492GHz諧振頻段內(nèi)實(shí)現(xiàn)了圓極化，可作為“北斗”的接收天線，應(yīng)用電磁仿真軟件HFSS進(jìn)行仿真優(yōu)化，仿真結(jié)果達(dá)到指標(biāo)要求。
[Abstract]:With the rapid development of mobile communication technology, especially wireless communication technology, a variety of terminal equipment came into being. Antenna as an important part of mobile terminal equipment. Its characteristics directly determine the performance of the whole communication link system. At present, satellite navigation in the civilian market continues to expand. Especially with the rapid development of mobile Internet and the popularity of smart phones, it has laid a solid foundation for the explosion of satellite positioning services. Because of its strong anti-jamming performance and anti-multipath reflection, the research on satellite navigation terminal antenna is focused on multi-frequency band in recent years. The fractal antenna is generated by iteration, because of its self-similarity, it is easier to realize the antenna in multi-frequency band. Because of its space filling, the antenna size can be further reduced. The application of fractal antenna to the design of microstrip antenna will improve the antenna performance greatly. For the research and application of fractal antenna, it must have a very broad prospect. The main work of the thesis is as follows: Firstly, the basic theory and analysis method of microstrip antenna are introduced in detail, then the circular polarization and feed method of microstrip antenna are discussed. The main performance requirements of circular polarization antenna used in satellite navigation system and other mobile terminals are described. Secondly, aiming at the demand of satellite navigation antenna, a dual-band circularly polarized slot antenna is designed for mobile terminals such as satellite navigation system, which works in the B-1 / S band of Beidou navigation satellite system. The electromagnetic simulation software HFSS is used to optimize the simulation, and on this basis, the physical object is made, and the measurement results are basically consistent with the simulation results. Thirdly, the application of Hilbert fractal antenna in the field of mobile phone communication is analyzed again. Then three schemes are used to optimize the performance of a miniaturized Hilbert fractal multiband PIFA antenna. Finally, the fractal technique is applied to the design of microstrip antenna, and a terminal antenna is designed which works in the three frequency bands of GSM900, DCS1800 and ISM WLAN2.5GHz. The circular polarization is realized in the resonant band of 2.492 GHz, which can be used as the receiving antenna of Beidou. The simulation optimization is carried out by using the electromagnetic simulation software HFSS. The simulation results meet the requirements of the target.
【學(xué)位授予單位】：杭州電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN822

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