From: [email protected]
Date: Fri Mar 17 2000 - 08:06:20 PST
Prop delay = (u x e)^1/2= (4pix10^-7 x 8.854x10^-12)^1/2= 3.33ns/m or 84ps/in
in free space
Prop delay= (uur x eer)^1/2 = (4pix10^-7 x (4.7)8.854x10^-12)^/12 = 7.23ns/m or
184ps/in in FR4 assuming 4.7 relative permittivity
Characteristic impedance Zo= (impedance per unit length/shut admittance per
unit length)^1/2
={(R
+jwL)/(G+jwC)}^1/2
Assuming lossless conductors
=(jwL/jwC)^1/2
=(L/C)^1/2
Ken
**** 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 Apr 20 2000 - 11:35:41 PDT