[SI-LIST] Re: Trace Dimensions ??
- From: Ray Anderson <Raymond.Anderson@xxxxxxx>
- To: SRogers@xxxxxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Thu, 20 Feb 2003 09:53:07 -0800 (PST)
>
>
>I require a 50 ohm transmission line fabricated on a duroid PCB with Er =
>of 10.5, board thickness 2.54mm. My calculations suggest 2.17mm width? =
>Can anyone confirm this or suggest otherwise?
>
>Thanks
>
>
>
>Steve Rogers B.Eng(Hons) C.Eng IEE
>RF Design Engineer
>Micromill Electronics Limited
>
Steve-
Putting the parameters you specified into Apsim RLGC field solver
shows the calculated impedance to be 50.06 ohms. Sounds like you
are spot on with your calculations.
Here is the output from the analysis:
CMATRIX (F/mm) =
1.763e-13
CMATRIXAIR (F/mm) =
2.517e-14
LMATRIX (H/mm) =
4.421e-10
GMATRIX calculated at a frequency of 1.000e+08
GMATRIX (S/mm) =
1.880e-06
RMATRIX calculated at a frequency of 1.000e+08
RMATRIX (ohm/mm) =
1.003e-03
CHARACTERISTICS OF VARIOUS MODES
Mode # Z0 Effective Relative Attenuation
(ohms) Dielectric Constant (dB/mm)
1 50.06+j0.33 7.01 4.959e-04
-Ray Anderson
Sun Microsystems Inc.
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
