Full-Wave Characterization of the Mode Conversion模式转换的全波特性 共面波导直角弯曲

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1、2532IEEETRANSACTIONSONMICROWAVETHEORYANDTECHNIQUES,VOL.43,NO.11,NOVEMBER1995Full-WaveCharacterizationoftheModeConversioninaCoplanarWaveguideRight-AngledBendMing-DongWu,Sheng-MingDeng,Ruey-BeeiWu,andPowenHsuAbstract-Afull-wavealgorithmisproposedtoanalyzethor-inc

2、orporatingtheairbridge'seffectevaluatedusingaquasi-oughlya90"bendofcoplanarwaveguide(CPW).Basedonstaticmodel[131.Thefinitedifferencetimedomain(FDTD)themixedpotentialintegralequation(MPIE)formulation,themethodwasimplementedtothesolutionsofbandrejectequivalentmag

3、neticcurrentdistributionontheaperturesisfilterswithandwithoutairbridgesandmodifiedT-junctionssolvedbythemomentmethodusingoverlappingrooftopbasisfunctionsandtheGalerkinweightingprocedure.Thematrix[SI.Amoredetailedfrequencydomainanalysisofthesamepencilapproachist

4、henutilizedtodothede-embeddingprocedurefilterswascarriedoutbyOmarandChow[9]usingtheandextractboththecoplanarandslotliemodesscatteringoffthemixedpotentialintegralequation(MPIE)formulation.Also,asymmetricdiscontinuity.Experimentsareperformedtomeasurethespectraldo

5、mainmethodwasappliedtoanalyzeT-junctionsthescatteringparametersandtheresultsverifytheaccuracyofthepresentalgorithm.Thefull4x4scatteringmatrixbetweenwithvarioustypesofairbridges[lo].thesetwomodesispresentedandfromwhich,theoccurrenceWhileextensivestudiesaimedatth

6、esuppressionoftheofthemodeconversionisinvestigated.Themodeconversionisoddmode,themodeconversionphenomenonitselfiscom-noticedtobecomealmostcompleteatcertainfrequencies,whichparativelyunexploited.In[IO],theoddmodeexcitedbymaybeusefulinthedesignofCPWtocoupledslotl

7、inetransition.theT-junctionwasobtainedbyevaluatingtheinnerproductbetweenthesolvedfielddistributionsandtheprecomputedI.INTRODUCTIONmodalfields.TheapproachrequiresthesolutionofthefieldinawholeplanetransversetotheCPWsectionandthemodalOPLANARWAVEGUIDE(CPW)hasfoundi

8、ncreasingCfielddistributionobtainedinthelineeigenvalueproblemisapplicationsinMICandMMICduetoseveraladvan-prerequisite.Abetterapproachisthusproposedin[12],eithertagesitoffers