标签: 度走

90度走线90DegreeCorners:TheFinalTurnDougBrooks,PresidentUltraCADDesign,Inc.needstobefabricated;andthensomeonewiththeappropriateequipmentandknowledgeneedstodothetestingandevaluation.Seetheacknowledgmentattheendofthisarticleforthosewhodonatedtheirtime,effort,andresourcesformakingthisevaluationpossible.Figure1illustratestheboardthatwasdesignedandfabricated.Sixtracesprovidedvariousconfigurationsfortest.Alltraceswereconfiguredasmicrostrip,controlledimpedancetraceswithidenticaldimensions(1.2ozcopper,10milswidewith7milsFR4dielectricthicknessbetweentraceandunderlyingplane,Er=4.6).Provisionwasmadeatoneendofeachtracefora50OhmRFconnectorformatingwithtestequipment,andforpadsattheoth……