To show off his toolkit in action, he set it up on a Raspberry Pi, with Python code ... We are used to Fast Fourier Transform (FFT) being our go-to approach for spectral analysis, aka, recognizing ...

Figure 1 The amplitude FFT of a 100-MHz sine wave is a single spectral line located at 100 MHz. The amplitude of the impulse is 150 mV, matching the peak amplitude of the input sine wave. There are a ...

In this chapter, some common methods for spectral analysis of temporal signals will be presented ... Let us illustrate the ideas behind the FFT algorithm by using a simple example having N = 4. If we ...

The Zoom FFT method of spectrum analysis is used when fine spectral resolution is needed within a small portion of a signal’s overall frequency range. This technique is more efficient than the ...

In applications where the coherent sampling criteria cannot be met, a window weighting function is applied to minimize spectral leakage. Designers should know how to select an optimal FFT ...

An FFT spectral view also is helpful when looking at more complex, wide spectral signals to verify if the proper modulation is happening. Time-gated FFTs further evaluate spectral components of a ...