In fact, you’d need a PWM frequency of 20kHz to be worried about the cheaper 40kHz ADCs in some phones. As long as the PWM f is below that, measuring this way makes sense and works. Report comment ...

Performing an FFT assumes that a waveform is continuously sampled from -∞ to +∞. If one of the above mentioned conditions for coherent sampling is not met, non-coherent sampling occurs. Unless window ...

Figure 4. FFT of 4 μs-wide, 20-μs repeating linear FM chirp. Markers are placed on the FFT response, and it can be seen that this RF pulse does have a wide spectral width, from 300 MHz to 900 ...

Wideband chirped radar measurements using FFT-based spectrum analyzers Measuring this same chirp with an FFT-based spectrum analyzer is less optimal. The reasons for this have to do with how the ...

B&K Precision’s models 2540B-GEN and 2542B-GEN digital storage oscilloscopes integrate function/arbitrary waveform generation capability into 60-MHz and 100-MHz, 1-sample/s instruments B&K ...