标签: db-db

dB-dB1MA98_4EProducts:Signalgenerators,spectrumanalyzers,testreceivers,networkanalyzers,powermeters,audioanalyzersdBornotdB?Everythingyoueverwantedtoknowaboutdecibelsbutwereafraidtoask…ApplicationNote1MA98Trueorfalse:30dBm+30dBm=60dBm?Whydoes1%workouttobe-40dBonetimebutthen0.1dBor0.05dBthenexttime?Thesequestionssometimesleaveevenexperiencedengineersscratchingtheirheads.Decibelsarefoundeverywhere,includingpowerlevels,voltages,reflectioncoefficients,noisefigures,fieldstrengthsandmore.Whatisadecibelandhowshouldweuseitinourcalculations?ThisApplicationNoteisintendedasarefresheronthesubjectofdecibels.Subjecttochange……