NOVEL_RF_POWER_METER

Published:2009/6/19 3:32:00 Author:May | From:SeekIC

The circuit matches the diode with a voltage-variable attenuator that has a logarithmic response. By varying the attenuation until the diode output is zero, the resulting attenuation value then corre-sponds to the input power level. Because the voltage-variable attenuator's output is logarithmic, diode nonlinearities become negligible.



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