基于FDTD的有限寬度接地板共面波導傳輸特性研究.pdf

1、電子科技大學碩士學位論文基于FDTD的有限寬度接地板共面波導傳輸特性研究姓名：鄭毅申請學位級別：碩士專業(yè)：物理電子學指導教師：陳彥20090501ABSTRACTABSTRACTAsakindofmicrowavetransmissionlineWithexcellentperformanceandconvenientprocess，thecoplanarwaveguidesareincreasinglyplayinggreaterro

2、leinMMICcircuitEspeciallyinthemillimeterwaveband，thecoplanarwaveguideshavetheincomparableperformanceadvantagesovermicrostripsHoweverthetraditionaltheoreticalanalysisofcoplanarwaveguidesareusuallybasedonaseriesofidealcase

3、s，suchasthemediumsubstrateisinfinite組呔andthegroundplateinfinitewide，whichisnottherealcaseInordertodirectthedesignoftheMMICcircuitbetteritisnecessarytesearchontheelectromagneticcharacteristicsofthecoplanarwaveguidesundert

4、henonidealcircumstancesThefiniteground’Sinfluencesontheelectromagneticcharacteristicsofthecoplanarwaveguideswereexactlyresearchedinthispaper。Inmanynumericalcalculationmethods，theFiniteDifferenceTimeDomain(FDTO)Waschoseas

5、theresearchmethodduetotheadvantagesthattheinformationinverywidefrequencyspectrumcouldbeobtainedbysingletimedomaincalculationTheprinciplesandstepsofusingFDTDanalyzingthecoplanarwaveguideswerepresenteddetailedlyinthispaper

6、Onthedivisionof鰣ds，theheterogeneous鰣dswereadoptedtosimulatethefieldintensitymicroscopiclyandthephysicalstructurepreciselyThecommonexcitationsandthewaystheyaddedweresystematicallystudiedandtwoaddingwaysandapplicationsofth

7、eexcitationwereproposed。AboutthetreatmentoftheabsorbingboundaryweusePerfectMatchLayerInaddition，eighttypesofeoplanarwaveguideswi餓concretesizeweregiveninthispaperandtheircharacteristicsimpedance，propagationconstantsandeff

8、ectivedielectricconstantswerecalculatedThentheeffectrulesoffinitegroundplateoncoplanarwaveguideswereSUmupFinally，thecurrentdifficultiesofthisprojectwereputforwardandtheprospectofnextstepworkwerelookedforwardtoKeywords：FD