[Lofarpwg] PPF for LOFAR

[Cees Bassa]

Hi Evan,

On Thu, 2020-06-11 at 08:52 +0100, Evan Keane wrote:
> Hi PWG,
> 
> Does anyone have to hand a paper/document/anything describing the
> LOFAR polyphase filterbank in the RSP boards, or a model for them?
> The kind of thing I could run on (say) some simulated Nyquist
> voltages to get a LOFAR RSP like response? And, related, any attempts
> to invert the polyphase filterbank?

I believe the taps of the station based PFB are defined in:
https://git.astron.nl/ro/lofar/-/blob/master/RTCP/Cobalt/GPUProc/src/BandPass.cc

Here, they are used to correct the bandpass for the bandpass ripple.

Regards,
   Cees