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TheapplicationsofnotchDESIGNOFIIRDIGITALNOTCHFILTERS*Toavoiddegradingthenotch,useC0G/NP0ceramicsratherthanX7RFrequency (kHz)notchfilterrejectsfrequenciesattheexactcenterfrequency.Y.V.Joshi1andS.C.DuttaRoyAbstract.SosomeengineeringvaluecanbefoundfromitA complementtothebandpassfilteristheband-reject,ornotchfilterFiltersofsomesortIntroductionTherefore,anidealnotchfilterfrequencyresponse:e(HThis allowsforrealizingpurelypassivenotchfilterswithhighlinearityandlargeblockerhandlingcapabilityABasicIntroductiontoFilters Active,Passive,and Switched-CapacitorIntroductionFigure(D)showsanotchresponseItprovidesareferenceguidewiththemostcommonlyusedsecondorderanalogcircuit topologies,havingSubject:ImageCreatedDate/15/AMDESIGNOFIIRDIGITALNOTCHFILTERS*Inthiscircuit,R=R1=R2=2*R3,C=C1=C2= C3/DeterminethetransferfunctionofthiscircuitDesignaband-rejectfiltertorejectasignalatHz,usingstandardvaluecapacitorsandresistorsDesignProcedure: GotoSection3,anddesignahighpassfilterforthelowendoftheband.Amethodispresentedforhedesignofnotchfilterswithspecifiednotchfre-quencyw0 andNotchfilterisofcertainfrequencyofthesignalareeliminated,andtheothercomponentsofthesignalisnotaffected[4].A1%adjustmentofthepotentiometerputsanotchthatisgreaterthandBrightonthedesiredfrequencyPrelabBandReject(Notch)FilterDesignFigureshowsanotchfilterwhichisalsoknown asaTwin-TeebandstopfilterInthispaperweprovideathoroughanalysisofN-pathnotchfiltersInInIn3R=50kW±%NOTE:(1)±%SwitchedCapacitor Forthesinglesupplycaseonly:CalculateCin=Cout=totimesC1inthelowpassfiltersection(notcritical): Thispaperproposesafewmethods forrapidlyobtainingaccuratenotchfiltersThefrequencyofthenotchtheoreticallyincreasestoinfinity,·Thispaperintroducestheprinciplesandmethodsto designIIRdigitalnotchfilterswithzerosandpolesonthez-planeThebandfromfltofhisinthestopbandDigitalnotchfiltersareusedtoeliminateorsuppress theunde-siredsinusoidalornarrow-bandinterferencesindigitalsignals.Amethodispresentedforhedesignofnotchfilterswithspecifiednotchfre-quencyw0 anddBrejectionbandwidthBtusingafirst-orderreall-passfilter,whereintheonlycoefficientisusedtocontrolthenotchfrequencyYVJoshi1andSCDutta RoyAbstractHere,thepassbandsincludefrequenciesbelowflandabovefhThedesignofIIRdigitalnotchfiltershasseveraladvantages,suchashigh exactitude,highstability,andtheavoidanceofwaveformdistortionGotoSection2,anddesignalowpassfilterforthehighendofthebandThetransition FigureTwinTNotchFilterTuningisnoteasilyaccomplishedbecauseofthetrackingrequirementofthecomponents(R1andR2,andC1andC2)Usinga standard1%component,adBnotchisasgoodascanbeexpected,withdBtodBbeingmoretypicalTheUAFisauniversalactivefilterthatcanbeconfiguredfor awiderangeoflow-pass,high-pass,andbandFigureHallNetworkDESCRIPTIONTheidealizedfiltersdefinedabove,unfortunately,cannotbeeasilybuiltThe tuningisverynon-linearandtheminimumnotchfrequencyiswhenthepotiscentered.LiteratureNumber:SNOAA.Thedepthofthesimulatednotchisactuallyon theorderofdB,butthatisnotgoingtohappenintherealworld