Why does my bandpass RF filter complain about Ts in Simulink?

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Javier 2015-3-31

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Hello,

I am doing a basic amplitude modulator, and I'm using as input signal for now a Gaussian noise generator, then I modulate it with a carrier fc=2e9Hz. When using Simulink along with a RF bandpass filter, I got an error saying that there is missmatch between the filter sampling time (Badnpass filter Ts = 2.5e-9) and the input signal the noise I guess (Ts= 2.5e-11), as it can be seen in the picture attached.

I have tried as well to set the same sampling time in the gaussian generator and in the filter, but then I got another error saying that the sampling time in the filter is to low compared to the center frequency... Which I don't know what it does mean, since if I set it lower, then I would have aliasing issues.

May someone enlighten me a bit?

Thanks in advance!

Regards