FDTD在若干電磁問題中應(yīng)用的研究.pdf

1、西安電子科技大學(xué)碩士學(xué)位論文FDTD在若干電磁問題中應(yīng)用的研究姓名：白劍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：無線電物理指導(dǎo)教師：葛德彪20071201AbstraetAbstractFiniteDifference“timeDomainffDTD)Methodhasappliedtomanydifferentfieldsofelectromagneticproblemssuchasradiationscatteringelectromagnetic

2、compaliblenesseteComparedwithothernumericalmethods，F(xiàn)DTDisSU]，cTiorindealingwiththekindofproblenlswhereinvolvedobjectshavecomplexshape01“materialconstructionThispaperdealswith80meapplicationsarisingfrompracticaldemandsbas

3、ed011theresearch011FDTDmethodThispaperdiscussesconc】恍techniquesusingFDTDmethodtorealizethesimulationofelectromagneticwavepropagationinwaveguideandtheanalysisofradiatingfieldradiatedbyopenwaveguide，homantennaandslottedarr

4、ayantennaThetotalfieldscatteringfieldtechniqueisextendedtobeusedintheintroductionofexcitedsourceinsortofwaveguideproblemsThefidelityofexcitedsipcallbeguaranteed鴿longassomeparametersofmodulatedGanssianpulsearcproperlysele

5、ctedBesidestheradiatingfieldofopenwaveguideexcitedbYmodulatedGallssianpulseisdiscussedtheresultofwhichisingoodagreementwiththemeasuredmsulLshowingthevalidityoftheproposedmethodTherelativetechniquestoFDTDmethodfortackling

6、thescatteringfieldofplasmaandcomplex喇eminvolvingrocketplumeareproposedTheFDTDtimesteppingrelationsarededucedbasedonZtrensformationwhereplasmaistakenasthespecificexampleofdispersivemediumTheresultfromsuchalgorithmisingood

7、agreement、^，i也that丘omMietheoryFurthermoretheinfluenceofplasmafrequencyandplasmacollisionfrequencyoncharacteristicsoftheplasmaobjectisgivenaftercxanlinationofthecomputationalresultsAlso，thescatteringcharacteristicsofcompl

8、exobjectswithplumeareexplaineddependingonthenumericalrcsultfromZTFDTDmethodOilMPIparallelplatformTodevelopFDTDsofrwareofpracticalusageitisimportanttomakeit011aplatformthatallowsforreadyacceSS，highlyefficientcomputationan

9、dunquestionableaccuracyForthesereasons，atypeofsothvaredevelopedbytheauthorisparticularlyintroducedThemaintechniquesusedinsuchsoftwareinvolveOpenGL，themixedprogrammingofFortranandVisualc抖themixedprogrammingofMatlabandVisu