資源描述：
《角饋背腔縫隙雙極化天線特性分析》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、AbstractInsuchcase，theextendinglengthofthefeedlinesandthestripsovertheslothasthelargestinfluenceontheantennacharacteristicsduetotheirimmediateimpacttotheimpedancematching．However，themostunbearableisthattheresonantperformanceisverysensitivetothelengthoffeedlinesandstrips，wh
2、ichareusuallytooshort．Thentheaccuracyrequirementoftheantennamanufactureisverysevere．Tosolvethisproblemthecomer-fedantennaisproposed．(2)Thecomer-fedantennameanthefeedmicrostripsandtheloadedstripsarelocatedonthediagonallinesofthecavityrectangularsurface．Becausethedistancebet
3、weenthecomerandtheslothasthelargestvalue，thefeedlinesalsohavethelargestlengthandthefeedportimpactontheantennaresonantperformancecanbereduced．However，iftheloadedstripsaregroundedinsuchcase，thebetterisolationfrequencypositionswillbefarlowerthantheoperatingband，whichhasthesam
4、evariationtrendastheedgefeed’S．Thereasonforitisthatthecomer-fedlinewouldpresentlargerinductancevaluejustbyitself．Soforthecomer-fedcasetheloadedstripsshouldnotbegroundedandbythiswaythebeaerisolationbandpositioncanbethesamewiththeoperatingbandandthegoodportsisolationisobtain
5、ed．Duetothelargefeedlinelengththeponshavelittleinfluenceontheantennaresonanceandtheantennamanufacturegetsmorefeasibility,thoughtheextendingsectorovertheslotforfeedlinesandstripsstillarethemajorfactortodecidetheimpedancematching．Threetypesofantenna，whichallareoftherectangul
6、arcavity,areproposedtoverifytheaboveanalysisresults．Thedifferencebetweenthemisthattheirradiationslotsareannular,rectangularannular,andrectangularannularof45-degreerotaryangle，respectively．Theresultsshowthattheantennasofannular,ordislocatedrectangularannular,havebetterperfo
7、rmance．Infact，thehighisolationforthecomer-fedantennaCanalsobeexplainedbythelargerspacingbetweentwopoIrts，whichhasbeenverifiedbythesquarepatchantennaofdual-polarizedradiation．(3)Withthehelpoftheaboveanalysis，itCanbeconcludedthattheloadedstripsCaneffectivelymodifythebetteris
8、olationbandposition，whiletheyhavelittleaffectiononthatoftheoperatingband．Theotherexplanat
