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How to generate a dirac comb in Simulink

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Johannes Siegel
Johannes Siegel 2021-3-22
评论： Johannes Siegel 2021-3-22
Hello,
I want to generate a dirac comb with a certain frequency in Simulink.
My first attempt was using a sampled based pulse generator with a ratio of Period/ Pulse width = 1000. With a sample time of 10^-6 s, this make a frequency of fc=10 kHz.
While in time scope the dirac comb shows a satisfied form (attachment), it differs in the frequency domain (using a spectrum analyzer) from the expected form.
Instead of with a dirac for every n*fc, it shows rather a sinc-function (attachment).
Can s.o help me with this issue? Would be more than happy.
Best regards
Johannes

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