how to evaluate your antenna tuner QST04/95
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| Jul 8th 2014, 20:08 | |
dj8ulTotal Topics: 0 Total Posts: 0 |
in this very interesting article about measurement of loss in ant Tuners I do not understand how (Eq 1) on page 32 can be derived. The estimated loss in dB = 5 log ( (S1 +1)(S2+1)/9(S1-1)(S2-1)) Can anyone explain to me how this equation can be derived and under what boundary conditions? thanks, Hans DJ8UL |
| Jul 10th 2014, 13:45 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
The author explains what he did in the appendix--instead of using exact equations, he is using a geometric mean of two different measurements to come up with a result that is pretty accurate. Zack Lau W1VT |
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