[TowerTalk] Transmission Line theory

Kevin Schmidt w9cf at ptolemy.la.asu.edu
Wed Jul 2 11:18:33 EDT 2008

A quick numerical calculation for squares of side 2cm with
3cm center-center gave me Z0=127.3 Ohms. This assumes perfect

The approximate equation for large spacing is
Z0 -> 120*ln(2*separation/(1.18*side)) and gives 112 Ohms; so it is about
10 percent off.

I hope this helps,
73 Kevin w9cf

More information about the TowerTalk mailing list