Mar 6, 2013 #1 C ccarrot Newbie level 6 Joined Sep 19, 2007 Messages 11 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,399 I'm just doing a power spectral density (PSD) analysis of a signal in time domain. I'm following the fft method described in : https://www.mathworks.com/support/tech-notes/1700/1702.html It gives the real physical unit for the PSD. However, the unit is "power", is that mean "V^2/Hz"? If yes, then I take 10*log10(power) or 10*log10(V^2/Hz), do I get the unit of "dB/Hz"? Then how can I convert it to dBm/MHz? Thank you very much!
I'm just doing a power spectral density (PSD) analysis of a signal in time domain. I'm following the fft method described in : https://www.mathworks.com/support/tech-notes/1700/1702.html It gives the real physical unit for the PSD. However, the unit is "power", is that mean "V^2/Hz"? If yes, then I take 10*log10(power) or 10*log10(V^2/Hz), do I get the unit of "dB/Hz"? Then how can I convert it to dBm/MHz? Thank you very much!