Re: [SI-LIST] : Schiffman phase shifters

Richard A. Schumacher (schumach@valencia.rsn.hp.com)
Mon, 29 Sep 1997 9:34:45 CDT

> I believe that most u-wave and RF techniques tend to be much more narrow
> band when compared to the spectrum of digital singals. This tends to limit
> the applicability of those techniques for digital circuits.

Dr. Sayre is well aware of the broadband requirements of digital
signalling. His example is not for direct application. It's a
case in which a microwave technique provides a caution against
a dispersive delay effect, one of which many digital designers
will be unaware. There are several other basic physics principles,
long known in non-sexy fields such as microwaves, which digital
designers are only now discovering through painful experience.