[antennaware] SWR Calc again
Dallas Carter
ludal@dmv.com
Wed, 4 Aug 1999 07:49:46 -0400
Thanks to all of those who responded to my initial question. I guess I need to clarify the
question. I know that SWR should be Z(load) divided by Z(line) when load is > than line
and vice versa, but then the formula for finding Z(load) must be tainted. The only ref I have
found is Z=squareroot (R^2+J^2) When using this product, the above formula does not
apply. Am I using the wrong formula to determine Z or the wrong formula to determine SWR?
example: 1-j50 is essentially Z=50, but it does not provide 1:1 SWR. of course 50-j0 does.
A Smith Chart or X/Y vector graph with SWR circles is a simple graphical solution, but I was
looking for a mathematical one. Thanks again - Dallas W3PP
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