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Joel Koltner  
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  More options Jul 7 2008, 11:43 pm
Newsgroups: sci.electronics.design
From: "Joel Koltner" <zapwireDASHgro...@yahoo.com>
Date: Mon, 7 Jul 2008 11:43:01 -0700
Local: Mon, Jul 7 2008 11:43 pm
Subject: Re: PCB power planes?
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"Joerg" <notthisjoerg...@removethispacbell.net> wrote in message

news:Xbtck.1063$zv7.897@flpi143.ffdc.sbc.com...

> That's the crux with DSP, they often can't do that. This is where wave
> digital filters come in handy but youngsters don't have the foggiest what
> that is or think it's some tuning device for a surfboard.

They are few -- if any? -- undergraduate EE curriculums that even mention
switched cap design... it's pretty much all DSP and lumped-element filters
these days.

I've read the Fettweis paper on WDFs -- I think I posted a copy to ABSE at
some point? -- but I've never had a good application for them.  I should
definitely revisit the topic as I didn't realize the group delay could be so
small.

---Joel


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