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May 11, 20161 min read

Convert Voltage to dBm and dBm to Voltage (peak-peak and RMS)


dBm is power referenced to 1mW, where Rref is the system impedance


convert-voltage-dMb-and-dBm-voltage-FAQ-fig01


by substitution


and again by substitution


convert-voltage-dMb-and-dBm-voltage-FAQ-fig04


Since most systems, including the Bode 100 are 50Ohms, this can be reduced to,


convert-voltage-dMb-and-dBm-voltage-FAQ-fig05


convert-voltage-dMb-and-dBm-voltage-FAQ-fig06

And we can also solve for Vrms or Vpp from dBm


convert-voltage-dMb-and-dBm-voltage-FAQ-fig07


convert-voltage-dMb-and-dBm-voltage-FAQ-fig08


convert-voltage-dMb-and-dBm-voltage-FAQ-fig09


convert-voltage-dMb-and-dBm-voltage-FAQ-fig10


convert-voltage-dMb-and-dBm-voltage-FAQ-fig11

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