Technical data

Chapter 5 87

Spectrum Analyzer

Measuring Multiple Signals

Spectrum Analyzer

NOTE To determine the resolution capability for intermediate amplitude

differences, assume the filter skirts between the 3 dB and 60 dB points

are parabolic, like an ideal Gaussian filter. The resolution capability is

approximately:

where ∆f is the separation between the signals.

12.04 dB

∆f

RBW

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