毕业设计论文-三频内置手机天线的设计及仿真.doc

常州大学本科毕业设计（论文）PAGEIV学号：常州大学毕业设计（论文）（2012届）题目学生学院专业班级校内指导教师专业技术职务校外指导老师专业技术职务二○一二年六月三频内置手机天线的设计及仿真摘要：内置天线是现代手机普遍的选择，能使手机的外形设计更加轻薄化，多样化。也可以通过合理安排内置天线的位置，来抵消辐射对人体的影响。所以小型化、多频段、智能化、多极化是移动通信未来发展的必然的趋势。而微带天线所特有的体积小、重量轻、低剖面、可共形的特点，使得它成为了手机内置天线最佳的选择。因此，学习研究微带天线的原理特性，对手机内置天线进行设计，对其性能进行仿真和分析的研究势在必行。本文介绍了一种新型PIFA三频手机天线，天线采取中心单馈点同轴馈电，在辐射片开两个U型槽的方法，用软件HFSS对天线进行设计和仿真，在GMS900MHz，DCS1800MHz和ISM2450MHz三个频段的增益分别达到了0.32dBi,0.11dBi和0.613dBi，相对带宽分别达到了7.8%，0.95%和3.9%。该天线可满足多频手机天线的要求，在三个频段上都能够正常工作，达到了新型无线通信天线系统对频段、带宽和增益的要求。关键词：平面倒F天线（PIFA）;三频天线GSM900MHz/DCS1800MHz/ISM2450MHz;U型槽DesignandsimulationofinnercouplershandsetantennainTriple-frequencyAbstract：Internalantennaisapopularchoiceformodernhandset.ItcanmakeTheappearanceofthehandsetmorelightandthinmakingandmorediversity.AlsoItcanmakethereasonablearrangementsforthelocationofinternalantenna,tocounteracttheimpactofradiationonthehumanbody.Therefore,theminiaturization,multi-band,intelligentization,andmulti-polarizationaretheinevitabletrendofthefuturedevelopmentofmobilecommunications.Andthemicrostripantennawiththeuniquecharacteristicssuchassmallsize,lightweight,lowprofile,conformaldeformation,hasbeenthebestchoiceoftheinternalantennainhandset.Therefore,thestudyoftheprinciplecharacteristicsofmicrostripantenna,isimperativefortheinternalantennadesignofphone,andtheresearchofitsperformancesimulationandanalysis.ThispaperpresentsanewPIFAtri-bandmobilephoneantenna,theantennatakesthecentersinglefeedascoaxialfeed,makestwoU-shapedslotsintheradiation-chip,andmakestheantennadesignandsimulationbyusingHFSSsoftware.threefrequencybandgainrespectivelyreached0.32dBi,0.11and0.613dBidBi,relativebandwidthachievedrespectively7.8%,0.95%and3.9%inGMS900MHz,DCS1800MHzandISM2450MHz.Itshowsthattheantennacanmeettheantennarequirementsofmulti-bandmobilephone,andcanworknormallyinthreebands,toreachtherequirementsofthenewwirelesscommunicationantennasystemfortheband,bandwidthandgain.Keywords：PIFA;GSM900MHz/DCS1800MHz/ISM2450MHz;U-shapedslot目录TOC\o"1-3"\h\z\uHYPERLINK\