多頻基站天線單元的研究.pdf

1、西安電子科技大學(xué)碩士學(xué)位論文多頻基站天線單元的研究姓名：盛海強(qiáng)申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電磁場(chǎng)與微波技術(shù)指導(dǎo)教師：焦永昌20050101AbstractInthemobilecommunicationsystem，themulti—bandbasestationantennasthatalotofsystemssharecandecreasethenumberofantennas，reducetheinterfefenceamongant

2、ennas，andsavethefabricatecostTheycanalsosharethealreadyexistingbase—stationAlongwiththevigorousdevelopmentofthemobilecommunicationtechnologytheresearchofthemultibandantennaelement，asthebasiccomponentofthemultibandbasesta

3、tionarrayantenna，isveryurgent，whichisalsooftheoreticalsignificanceandpracticalvalueFirst，thereflectorindual—bandbasestationantennaisdesignedTheeffectofseveralkindsofreflectoronthefronttobackratioandhorizontal01aneradiati

4、onpatternofbasestationantennaiSsimulated，andthebestreflectoriSobtained，whichmeetstheradiationdemandsofdualbandbase—stationantennaThedesignofmultibandantennaisthendiscussedmoreespeciallyCharacteristicsofmultiresonancescan

5、beeasilyobtainedbyplacingmanyparasiticelementsnearadipoleantenna，andthebroadbandwidthCallbeobtainedbyserialsettingoftheparasiticelements，bywhichatriplebanddipoleantennaisdesignedMoreoverthedualbandandbroadbandseriesfedpr

6、inteddipoleantennaconsistoftwostripdipolesprintedontwosidesofadielectricsubstrateandconnectedthroughparallelstriplinesDependingonwheretheantennaisfedandthewaythedipolesareconnectedanantennawimdual—bandandbroadbandcapabil

7、itycanbedesignedTheCPWfeddualbandmonopoleantennadiscussedconsistsoftwoparallelmonopolesfedbyaCPWlineItsimpedancebandwidthforthetwooperatingfrequenciesCanbefurtherenhancedbyincreasingthewidthofthelongermonopoleKeyword：bas