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Spectral Analysis with ADALM-PLUTO Radio

This example shows how to use the ADALM-PLUTO Radio as a data source for downstream spectrum analysis. You can change the radio's center frequency to tune the radio to a band where a signal is present. You can then use the spectrum analyzer to view and make measurements on the received spectrum.


The model performs an FFT-based spectrum analysis at complex baseband, and provides the following graphical information:

  • A view of the spur-free dynamic range of the receiver

  • A view of the qualitative SNR level of the received signal

Structure of the Example

The following figure shows the receiver model:

Running the Example

When you run the example, you can measure signal characteristics such as peaks, occupied bandwidth, adjacent channel power ratio, harmonic and intermodulation levels, and spur-free dynamic range.

The Overflow logical output indicates whether any output samples are not contiguous.