Microwave attenuation measurements with accuracies from 0.0001 to 0.06 decibel over a range of 0.01 to 50 decibels

The a ppli catio n of ce r tain powe r stab ili zatio n a nd m eas ure men t tec hniqu es to t he prob lem of atte nuatio n meas urement h as y ielded a meas urem e nt syste m wit h a stab ili ty a nd resolu t io n of t he o rder o f 0.0001 d ecibel.A pract ical a ppli cation fo r t his tech ni qu e was rece nt ly provid ed in t he calibrat ion of a rotary va ne ty pe of varia b le micro wave atte nu ata I' .In ord er to ta ke co m plete adv a ntage of t his increased stab il ity it was n ecessary to a pply refin ed tec hniq ues to t he evaluation a nd redu ctio n of m is matc h error .Th is pro ved to be by fa r t he most exactin g p ract ical a pplicatio n of t he cited tec hn iqu es enco unte red to d ate, b ut t he res ults o f t hi s cali b rat ion showed excell e nt ag ree men t wi t h t he m at hemat icall y p red icted values used in m a rk ing t he atte nu ato r dia l.