The output noise of a circuit is measured to be around when a resolution bandwidth of is used. What is the expected dBm measurement if a resolution bandwidth of is used? Find the root spectral density...

The output noise of a circuit is measured to be around when a resolution bandwidth of is used. What is the expected dBm measurement if a resolution bandwidth of is used? Find the root spectral density in .

At , a low-frequency measurement has a noise value of when a resolution bandwidth of is used. Assuming 1/f noise dominates, what would be the expected noise value (in dBm) over the band from to ?