标签: combline

DielectricComblineResonatorsandFiltersIEEETRANSACTIONSONMICROWAVETHEORYANDTECHNIQUES,VOL.46,NO.12,DECEMBER19982501DielectricComblineResonatorsandFiltersChiWang,SeniorMember,IEEE,KawtharA.Zaki,Fellow,IEEE,AliE.Atia,Fellow,IEEE,andTimG.DolanAbstract―Thedielectriccomblineresonatorcombinesthemeritsofthemetalliccomblineanddielectricloadedresonator.Byreplacingtheinnerconductoroftheconventionalcomblineresonatorbyahighrdielectricrod,higherunloadedQcanbeexpected.Resonantfrequency,unloadedQ,andcouplingcoefcientoftheresonatorareobtainedbyarigorousmode-matchingmethod.Aneight-poleelliptic-functiondielectriccomblineresonatorlterwasdesignedandtested.Measuredfrequencyresponsesverifythetheory.IndexTerms―Comblineresonator,dielectr……

TransitionalComblineEvanescentModeMicrowaveFiltersWElC-2TRANSITIONALCOMBLINE/EVANESCENTMODEMICROWAVEFILTERSmRalphLevyt,Hui-WenYaos,andKawtharA.ZakitttR.LevyAssociates,1897CaminitoVelasco,LaJolla,CA92037ttElectricalEngineeringDepa”rtment,UniversityofMaryland,CollegePark,MD20742$CTAIncorporated,6116ExecutiveBlvd.,Rockville,MD20852ABSTRACTTraditionalcomblinefiltertheorybasedonTEMmodecouplingresultsinbandwidthswhicharetoolarge,theincreasebeingafunctionofthegroundplanespacingtowavelengthratiob/X.Astheb/Xratioincreasesfrom0to0.35thebandwidthratioBWR,definedasactualbandwidth/TEMbandwidth,increasesfromunitytoover2:l.Thisbandwidthincreasehasnowbeenconfirmedbycalculationofthecouplingcoefficientbet,weericomblineresonators……

comblinefiltertuningwithHFSS……