you can spend twenty thousand dollars on a used VNA. Around the time Ted’s project began, Rigol released their cheap spectrum analyzer, the DSA815. This thing only cost a thousand dollars.

uses a large number of fixed filters to implement a spectrum analyzer. Another approach is to use one filter, but to make it tunable over the frequency range of interest (Figure 5-1). Since this ...

They can provide the user with a clear and precise window into the frequency spectrum. Spectrum analyzers and signal analyzers are used to analyze the electrical signals that are passing through or ...