How to display different frequencies all at once onto the Spectrum Analyzer in Simulink?
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I have trouble in displaying different frequencies, e.g: 10 to 20 GHz all at once onto the Spectrum Analyzer in Simulink.
I have attached my model, named: Testing_Different_Frequencies_V3 in this help request.
So please provide me with some suggestion/feedback in how i can display different frequencies all at once onto the Spectrum Analyzer in Simulink.
Thanks and regards
Joel Van Sickel 2022년 8월 8일
the first issue is how the sin is being generated. The blocks you are using package the sine output into frames, so it isn't a single signal, but actually a frame with 1024 data points. This isn't how the data can be formated for the blocks you have connected the sin waves to. I would start with the standard sine wave block for your first attempt. You can add a zero order hold to convert it to a fixed time step for the spectrum analyzer. I set the time step to 1/(20e9)/10, which is 10 samples per cycle of your fastest frequency. This step could be skipped if you set all three sin wave blocks to a fixed step, but I like to start with a continuous system.