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1、L型探針饋電的微帶天線仿真設計L型探針饋電的微帶天線仿真設計中文摘要近年來,隨著移動通信系統(tǒng)業(yè)務的不斷增加,通信設備不斷朝著小型化方向發(fā)展,同時對天線體積,集成化及工作頻段的要求也越來越高。重量輕,剖面低,成本低和易于集成的微帶天線,受到大家的廣泛的關注。目前微帶天線的主要限制還在于天線的狹窄。經(jīng)過數(shù)十年的發(fā)展,很多研究學者提出了拓展微帶貼片天線帶寬的方法,其中采用L型探針饋電的方式得到了很多關注。由于L型探針垂直部分及水平部分和貼片之間產(chǎn)生感抗和容抗,兩者相互作用產(chǎn)生諧振,使天線頻帶拓寬或者呈現(xiàn)多頻帶。這使得L型探針饋電廣泛應用于現(xiàn)代移動
2、通信系統(tǒng)中。本文介紹了微帶天線的輻射原理及微波射頻段電磁波的基本理論及L型探針饋電的微帶天線。文中依據(jù)理論分析以及數(shù)值計算相結合的方式設計出滿足設計需要的微帶天線并借助天線設計軟件HFSS分析了L型探針水平段和豎直端長度對天線帶寬的影響,在最后設計了一副進行仿真優(yōu)化了的信號頻段在3.2~4.4GHz的L型探針饋電的微帶天線。關鍵詞:微帶天線;容感性;L型探針饋電;HFSS仿真IIIL型探針饋電的微帶天線仿真設計ThedesignandSimulationofantennawithL-shapedprobefeedAbsractInrecen
3、tyears,withtheincreasingnumberofmobilecommunicationsystem,communicationequipmentdevelopedtowardsminiaturizationdirectionconstantly,andtheantennasize,highintegrationandfrequencyrequirementsarealsobecomingmoreandmoreimportant.Lightweight,withlowprofile,lowcostandeaseofintegr
4、ationhasgotwidespreadattentionbyallofus.Themajorlimitationsofmicrostripantennanowisthebandwidthoftheantenna.Afterdecadesofdevelopment,alotofresearchscholarsproposedmethodtoexpandthebandwidthofthemicrostrippatchantenna,whichadoptstheL-shapedprobefeedgetalotofattention.Becau
5、severticalsectionandhorizontalsectionofL-shapedprobecreateinductivereactanceandcapacitivereactance,andbothoftheminteracttoproduceresonance,thismakestheantennahaswidebandwidthormultiplefrequencybands.ThismakesL-shapedprobefeediswidelyusedinmodernmobilecommunicationssystem.T
6、hispaperintroducestheradiationprincipleofmicrostripantennaandmicrowaveradiofrequencysectionofthebasictheoryofelectromagneticwavetransmissionandtheantennawithL-shapedprobefeed.Basedonthebasictheoryofmicrostripantennaanalysisandnumericalcalculationdesignamicrostripantennamee
7、tthedesignneed,andanalysistheeffectofthesizehorizontalandverticalsectionofL-shapedprobeontheantennabandwidthwiththeaidofwithsimulationsoftwareHFSS.Inthefinal,itdesignsamicrostripantennawithL-shapedprobefeedwhichthetransmissionsignalfrequencybandin3.2~4.4GHz.KEYWORD:Microst
8、ripantenna;Shouldtheemotion;L-shapedfeed;HFSSsimulationIIIL型探針饋電的微帶天線仿真設計目錄第一章緒論11.1課題背景及