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From: Ted Koczynski
Newsgroups: sci.electronics.design
Subject: Re: Help With An Allpass Filter?
Date: Wed, 04 Dec 2002 10:28:05 -0500
Organization: Lamont-Doherty Earth Observatory of Columbia University
Message-ID: <3DEE1F05.2E213D82@ldeo.columbia.edu>
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Hello All,
Does the old Burr-Brown analog catalogs have a reference to an All-Pass phase
shifter in
INA-105 application note section?
Ted
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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