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From: Ted Koczynski
Subject: Re: Help With An Allpass Filter?
Date: Wed, 04 Dec 2002 10:28:05 -0500
Organization: Lamont-Doherty Earth Observatory of Columbia University
NNTP-Posting-Date: Wed, 4 Dec 2002 15:27:50 +0000 (UTC)
X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U)
Does the old Burr-Brown analog catalogs have a reference to an All-Pass phase
INA-105 application note section?
Richard Webb wrote:
> Mojo Jojo wrote:
> > I know the world has gone digital these days, but does anyone
> > know of an L/C formula for a passive bridged T lattice network
> > to get a 90 degree phase shift?
> What you are asking for is a Hilbert transformer. I don't know off the top
> of my head any analogue methods of making a Hilbert transformer but it can
> certainly be done and I remember seeing some in a book called 'The
> transforms handbook' or something like that. Might be worth a quick IEEE
> paper search?
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