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I'm attempting to use the ACPR_source block as an input to my circuit. I have baseband I and Q files for a modulated waveform, sampled at 30.72MHz. I'm encountering a problem that I believe is due to oversampling and interpolation, where unwanted images are appearing at multiples of the BB sampling frequency (see attached image). I see there is a filter option on the ACPR block, but when I tried using it it didn't seem to filter the images at all. How does one normally remove these?
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In reply to Andrew Beckett:
Yeah I did that eventually, what we concluded in the end is that the block is set up to work as-is with envelope simulation. If I wanted to run it in transient, I would need to provide the necessary filtering myself. There was another problem with this block where the output power is 3dBm off from what you set it to, I got a CCR fix request in for that already.