标签: 00795067

007950671938IEEETRANSACTIONSONMICROWAVETHEORYANDTECHNIQUES,VOL.47,NO.10,OCTOBER1999AJointField/CircuitModelofLine-to-RingCouplingStructuresandItsApplicationtotheDesignofMicrostripDual-ModeFiltersandRingResonatorCircuitsLeiZhu,Member,IEEE,andKeWu,SeniorMember,IEEEAbstract―Ajointeld/circuitmodelisproposedinthispapertocharacterizeaclassofline-to-ringcouplingstructuresfordesignandoptimizationofmicrostripdual-modeltersandringresonatorcircuits.Thegenericmodelisderivedfromeldtheoryandpresentedintermsofcircuitelementsbyapplyinganewlydevelopednumericaldeembeddingtechniquecalled“short-opencalibration”inadeterministicmethod-of-momentsscheme.Itprovidesanewdesignstrategyforcharacterizingandopti……