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Hi Evan,
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<div class="">I don’t have anything quickly to hand, but I can take a look. On the inversion,</div>
<div class="">we looked into some of this a long time back for the Cosmic Ray work and </div>
<div class="">I believe that there was a student, I could find out her name and details who</div>
<div class="">worked on that. However, my memory is such that while it is possible in theory</div>
<div class="">it isn’t actually possible unless you do a oversampled polyphase like the ASKAP</div>
<div class="">one and the one proposed for SKA-Low. </div>
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<div class="">Cheers - Ben</div>
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<div class="">On 11 Jun 2020, at 08:52, Evan Keane <<a href="mailto:evan.keane@gmail.com" class="">evan.keane@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">Hi PWG,
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<div class="">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?</div>
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<div class="">Evan</div>
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-- <br class="">
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<div dir="ltr" class="">Is mise le meas,<br class="">
Dr. E. F. Keane
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<div class="">**Smaoinigh ar an timpeallacht - an gcaithfidh tú an r-phost seo a phriontáil?**<br class="">
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<div>***************************************************************</div>
<div>Ben Stappers</div>
<div>Head of Pulsar and Time Domain Astronomy Group</div>
<div>MeerTRAP Project Lead</div>
<div>Jodrell Bank Centre for Astrophysics</div>
<div>Department of Physics and Astronomy</div>
<div>The University of Manchester</div>
<div>Phone: +44 161 2754187</div>
<div>***************************************************************</div>
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