矩量法分析开槽激励的介质谐振器天线

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1、南京理工大学硕士学位论文矩量法分析开槽激励的介质谐振器天线姓名：钱志华申请学位级别：硕士专业：通信与信息系统指导教师：陈如山2002.3.1磁1～触t矽毫江幺巧芬f之，何竹簟。尹皆j毂矽跏锨了节旋器天皎f英夕钉砀、+5万众恳垡葡·夸琴芝。J、谢季^oj≥无锑才謦孝己7扎式‘莹一。芦肛危叼歹。瓤爻侵7惠缏器弘德鹰怒丫-孑矛。尸存i枇、。，乍您7苫椒络彬毒露f刁fK甭霎≤‘籀耐’叁，印牵强竹芦玩天≯戋。‘r忍j管认秀F≮t溺矛戈≠龟乏窜{痧斧瑾碗篼；／≈小’菇t，孑旦仃穗节疑穿《之{丘tj·“。。7尹铲噜

2、铲笔彳乏f夏0≮南步苏§吣。fb产段左栩；7丝鲎然愿毽鳓拽cry+它潮勉拳，蓦力醐和／芝耽‘，弘2．射学矛精府霸躺瑶芒r，，i嵫汾磊侈旧兹．、，老、彳《7彭鄹而科锹狮筝，丧．譬彳唳2宠噌"石一{，r和何秀钾吲撒影咏内伺g墓辱了≯支j石^厢色叫山，“蟹够铲确，凡藏趣．Z矿AbstractDielectricresonators(DRs)arebeingusedextensivelyformicrowavefiltersandoscillatorsbecausetheyofferseveraladvant

3、agessuchassmallsize，lowcost，and。nlostimportantofall，freedomfrommetallicloss．ItisshownthatDRsofdifferentshapescanalsobeusedaseffectiveradiators，namelythedielectricresonatorantenna(DRA)．LossoftheDRantennaismainlycausedbydielectricloss，whichisverysmallinpr

4、actice．ThesefeaturesmakeDRAspromisingforhighfrequencyapplications．Inthisthesis，thehemisphericalDRAisinvestigated．Thehemisphericalshapeischosenbecauseamoreaccuratesolutioncanbeobtainedwithoutassumptionofmagneticwallbetweendielectricandair+Fromthepotentia

5、lGteen’sfunctionsforanisolatedsphericalDRAtheexactGreen’sfunctionsofvariousfieldcomponents,arederivedeasily．TheGreen’sfunctionsareusuallyrepresentedasthesumsofaparticularandahomogeneoussolutioninordertoavoidthenumericaldifficultyencounteredinevaluatingh

6、igher—orderwavefunctions．Aphysicalargumentisusedtosolvethesingularityproblemarisingfromtheparticularsolution．Inthisthesis，theaperturecoupledaswellasthecoaxialprobefedDRareinvestigatedinChapter2andChapter3，respectively，Inthecaseofprobe—fedexcitation，adel

7、tasourceisusedfbrconvenience．Thefundamentalproblemsconsideredinthisthesisaretheelectromagneticinteractionsofthefieldsduetoimpressedsourcesandaplanarconductingscreenhavingaslenderslotcutinit．Thescreenisassumedtobeperfectlyconducting，vanishingthin，andofin

8、finiteextent．Byequatingthemagneticfieldsonthetwosidesoftheslotinterface，allintegralequationfortheslotelectricfieldisestablished。WeinvokeimagetheorysothatthederivationsoftherequiredGreen’sfunctionsarelargelysimplified．Theunknowneq