标签: 01427987

01427987IEEETRANSACTIONSONMICROWAVETHEORYANDTECHNIQUES,VOL.53,NO.5,MAY20051817PeriodicallyNonuniformCoupledMicrostrip-LineFiltersWithHarmonicSuppressionUsingTransmissionZeroReallocationShengSun,StudentMember,IEEE,andLeiZhu,SeniorMember,IEEEAbstract―Inthispaper,thetwo-portperiodicallynonuniformcoupledmicrostriplinewithnitelengthisthoroughlystudiedasanequivalent-inverternetworkformicrostripbandpasslterswithharmonicsuppression.Extracted-invertersusceptanceisexhibitedtovaryupanddownversusfrequencywiththenullortransmissionzerowhenthecoupledlengthbecomeshalf-wavelength.Thistransmissionzerocanbeadjustedbyvaryingtheperiodicityand/orslitdepthtosuppresstherstspuriousharmonicpassbandofthelter.Fi……