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时间: 2020-1-15 10:10
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SKYWORKS_DCRLayoutRecommendationsLayoutRecommendationsLayerstack-up(assumea6layerboard)Layer1-RFtracesandComponentsLayer2-GNDLayer3-SignalLayer4-SignalLayer5-GNDLayer6-RFtraces(andcomponentsifneeded)Ifitisdifficulttohaveacompletegroundlayer,itisrecommendedthatgoodsolidgroundplanebemaintainedunderCX74017andRFtraces.LayerthicknessItisrecommendedthatthelayerunderthecomponentlayersbeground.Forinstance,ifbothlayer1andlayer6areusedtoplacecomponents,thenbothlayers2and5shouldbemostlyground.However,ifultra-thindielectriclayersareused,itispreferredtohavethecoppercutoutundertheRFtracesandusetheGNDonthelayerbelow,becausewiththindielectriclayers,theDCresistance……