From: Jim Freeman ([email protected])
Date: Mon May 07 2001 - 20:44:45 PDT
Hi Whiz,
check out the variation of capacitance with Z0. I think that you will find
that it is an inverse relationship.
Thanks
Jim Freeman
"Moran, Brian P" wrote:
> Rahul; aka Whiz Kid
>
> When dealing with transmission lines your dealing with
> characteristic impedance, not resistance. I assume you are confusing the
> two. When you use a higher characteristic impedance, you generally have a
> lower Er (dielectric constant) and therefore a higher trace propagation
> velocity. For this reason higher impedance traces tend to propagate the
> signal faster. Check out impednace and propagation velocity in the Motorola
> ECL Handbook or some other reference book for the equations and
> relationships.
>
> Brian P. Moran
> Signal Integrity Engineer
> Intel Corporation
> [email protected]
>
> -----Original Message-----
> From: whiz kid [mailto:[email protected]]
> Sent: Monday, May 07, 2001 6:52 PM
> To: [email protected]
> Subject: [SI-LIST] : Simulation question.
>
> Hello SI Gurus,
> I have a dumb question regarding the resistance of a
> tranmission line.I was simulating for the min and the
> max flight times. when I simulate for the min flight
> time I use the fast driver, reciever, fast
> transmission line. For the fast tranmission line I was
> thinking that when you have low resistance the line is
> fast and vice versa. But when I used a transmission
> line with high resitance I was able to get the min
> flight time. why is that so.
>
> Thanks in Advance.
> Rahul.
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Auctions - buy the things you want at great prices
> http://auctions.yahoo.com/
>
> **** To unsubscribe from si-list or si-list-digest: send e-mail to
> [email protected]. In the BODY of message put: UNSUBSCRIBE
> si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
> si-list archives are accessible at http://www.qsl.net/wb6tpu
> ****
>
> **** To unsubscribe from si-list or si-list-digest: send e-mail to
> [email protected]. In the BODY of message put: UNSUBSCRIBE
> si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
> si-list archives are accessible at http://www.qsl.net/wb6tpu
> ****
**** To unsubscribe from si-list or si-list-digest: send e-mail to
[email protected]. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****
This archive was generated by hypermail 2b29 : Thu Jun 21 2001 - 10:11:51 PDT