[USRP-users] USRP-users Digest, Vol 31, Issue 27

Brooke Hayden sdratonu at gmail.com
Tue Apr 2 12:33:37 EDT 2013


>
>
>
> On 28 Mar 2013 09:44, Brooke Hayden wrote:
>
> > What type of
> oscillator does the WBX daughterboard use? I am looking to change
> frequencies over time and would like to know exactly how fast I can
> expect to be able to do so.
> >
> > Thanks, Brooke
>
> It uses a PLL
> synthesizer, the ADF4350, with the refclock supplied by the underlying
> motherboard.
>
> But for really-fast switching, you keep the LO frequency
> constant, and use the DDC to hop around within the baseband bandwidth.
>

I need to change in more than just the baseband bandwidth. Like from 500
MHz to 2 GHz in steps of maybe a 100 MHz. This will occur over a chirp of
(ideally) less than a millisecond. Is the ADF4350 capable of such operation?
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