**************************************************
Douglas Day
Applications Engineering Manager
High Speed Interface
Communications Products Division
VLSI Technology Inc.
TEL: 408-434-7660
FAX: 408-434-7866
*************************************************
> From [email protected] Sun Sep 28 07:49:14 1997
> X-Sender: [email protected]
> Date: Sun, 28 Sep 1997 10:32:44 -0400
> To: [email protected], Paul Galloway <[email protected]>
> From: "Dr. Edward P. Sayre" <[email protected]>
> Subject: [SI-LIST] : Schiffman phase shifters
> Cc: [email protected], [email protected], Edward Sayre <[email protected]>
> Mime-Version: 1.0
>
> Paul:
>
> I used the Schiffman phase shifter to realize a constant 90 degree
> (lambda/4) vs. frequency design for a quadrature transceiver to generate
> circular polarization form two dipoles. The heavy interaction between the
> two sections causes a heavily loaded capacitive coupling over a given
> frequency range related to the length of the section. The work was done
> more than 30 years ago so the details are lost in the haze of history.
> However, these old and established methods, when updated to high
> performance digital interconnects and interpreted in terms of digital
> signaling, will be seen to be useful adjuncts to design.
>
> ed sayre
>
>
>
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> | NORTH EAST SYSTEMS ASSOCIATES, INC. |
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> | "High Performance Engineering & Design" |
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
> | Dr. Ed Sayre e-mail: [email protected] |
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>