模式匹配法分析復(fù)雜波導(dǎo)的不連續(xù)性.pdf

1、西安電子科技大學(xué)碩士學(xué)位論文模式匹配法分析復(fù)雜波導(dǎo)的不連續(xù)性姓名：賈瑤申請學(xué)位級別：碩士專業(yè)：測試計量技術(shù)及儀器指導(dǎo)教師：趙永久20100101AbstractWiththerapiddevelopmentofmodemmicrowavetechniques，thedemandforhi曲precisionmicrowavepassivecomponentssuchasfilters，diplexersbecomesmoreandmor

2、erigorousTraditionalequivalentcircuitmethodcallnolongerkeepupwiththepaceofthemicrowavetechniquedevelopment，becausecomponentsdesignedbythismethodhavelowprecisionandarefoundtobehardtoadjustBasedontheexactfieldtheories，Mode

3、MatchingMethod，whichisasemi—analyticmethod，CanbeusedtoanalyzethewaveguideanditsdiscontinuityThefinitethicknessofmetalirisesandtheeffectofhigherordermodesaretakenintoaccountbythismethodrigorouslyTherefore，thecomponentsdes

4、ignedbythismethodhaveveryhi出effectiveIntheissuesoftheanalysisthediscontinuities，suchasthewaveguidestepandiris，themodefunctionsareobtainedbythewaveequationsThetangentialcomponentsinbothTEwaveandTMwaveareexpandedandthenare

5、matchedaccordingtotheorthogonalitywiththeequalitiesoftransversefieldcontinuityFinallygeneralizedscatteringmatrixCanbeobtainedbytheaboverelationGenerallyspeaking，microwavepassivecomponentsarecomposedofaseriesofbasicblocks

6、TheseblocksCanberigorouslyanalyzedbymodematchingmethodOncethesymmetryisconsidered，theanalysisofthewholestructureissimplifiedgreatlysuchasridgewaveguideorcrossedrectangularwaveguideFinallythegeneralizedscatteringmatrixofm

7、icrowavepassivecomponentscanbeobtainedbymodematchingmethodandmatrixcascadingtechniqueBythismethodthecurveresultsagreewellwiththesimulationsandthecalculationtimeiSgreatlyshortenedtooKeyword：ModeMatchingWaveguideDiscontinu