[SI-LIST] Re: delay vs. transmission line length

  • From: "Yoni Tzafrir" <yonitz@xxxxxxxxxxxxx>
  • To: "Clewell, Craig" <cclewell@xxxxxxxxxxxxxx>
  • Date: Tue, 10 Jun 2003 16:05:04 +0300

hi,
not only i play the piano, but i play the guitar as well. maybe will =
make a jam session one day...

anyway pay attention (i see that my drawing didn't come out well in the =
e-mail) that i am measuring from the input of the driver, to the output =
of the driver, BEFORE THE TRANSMISSION LINE. does it still make sense?

Yonatan (Yoni) Tzafrir
*Tel:               (972) - 3 - 7552300 (T/L: 351)
*Fax:          (972) - 3  - 6177130
  *Mobile:       (972) -54- 459469
*E-mail:       <mailto:yonitz@xxxxxxxxxxxxx>



-----Original Message-----
From: Clewell, Craig [mailto:cclewell@xxxxxxxxxxxxxx]
Sent: Tuesday, June 10, 2003 3:59 PM
To: Yoni Tzafrir
Cc: Si-List (E-mail)
Subject: RE: [SI-LIST] delay vs. transmission line length


Yoni,=20

You don't play the piano do you?  :>)

If you make the T-line longer the delay should get larger. =20
1.Try simplifying the problem by simulating only the T-Line (using
independent voltage sources in place of your drivers) and watch the =
delay
increase and decrease as you change the length.=20
2. Check your probe locations.  Are you really looking at the input and
output?=20

Craig


-----Original Message-----
From: Yoni Tzafrir [mailto:yonitz@xxxxxxxxxxxxx]
Sent: Tuesday, June 10, 2003 8:45 AM
To: Si-List (E-mail)
Subject: [SI-LIST] delay vs. transmission line length


hi,
i run some simulations, for measuring Tpd from input of the of the =3D
driver to the output of the driver.=3D20

                |\
                | \driver               transmission line
     input------------|  =3D
\---------------------------------------------------LOAD
                |  /out
                |/
I have noticed that the longer my transmission line, the Tpd becomes =3D
shorter.
does it make sense? as i understand it a longer transmission line means =
=3D
more capacitance (and resistance) so the Tpd should be longer, doesn't =
=3D
it?

Yonatan (Yoni) Tzafrir
*Tel:               (972) - 3 - 7552300 (T/L: 351)
*Fax:          (972) - 3  - 6177130
  *Mobile:       (972) -54- 459469
*E-mail:       <mailto:yonitz@xxxxxxxxxxxxx>


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