On Thu, 05 Apr 2007 01:50:52 GMT, "Wayne" wrote:

OK, I used to be able to do this years ago, but I can't seem to find the
right references now.

If an antenna reflection coefficient is measured at, for example. 0.333
at -100 degrees, how is Z calculated? I think I can do this with a smith
chart, but the result does not match my attempted calculations.

TIA
Wayne


Hello Wayne,

The first reference I can give you is in "Theory and Problems of Transmission Lines," by Robert Chipman, in
Schaum's Outline Series, Page 128, Eqs. 7.9a and 7.9b.

If you don't have access to Schaum, I'll reconstitute the equations for you in Word, and send them via email.

In addition, I ran across these equations a day or so ago on this NG--I'll try to find them and direct you to
them on this NG.

Walt,W2DU