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 rfLib ACPR source usage 

Last post Wed, Jan 2 2013 6:18 AM by Steve Mikes. 2 replies.
Started by Steve Mikes 12 Nov 2012 03:30 PM. Topic has 2 replies and 1145 views
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  • Mon, Nov 12 2012 3:30 PM

    rfLib ACPR source usage Reply

    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?

     

    Thanks,
    Steve


    • Post Points: 20
  • Wed, Jan 2 2013 6:08 AM

    Re: rfLib ACPR source usage Reply

    Steve,

    Please log a service request with customer support for this.

    Thanks,

    Andrew

    • Post Points: 20
  • Wed, Jan 2 2013 6:18 AM

    Re: rfLib ACPR source usage Reply

     Hi Andrew,

     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.

     Thanks,

    Steve

    • Post Points: 5
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Started by Steve Mikes at 12 Nov 2012 03:30 PM. Topic has 2 replies.