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Hi Russ,

Lets put it simple without too many formulas. There has been a lot of math to come to the SWR formulas but we can think about it.

The reflection coefficient is the percentage of reflected voltage from a load. From that and the still going forward voltage we get those standing waves. At some points along the transmissionline the voltages add-up, at other points the substract. If we measure the ratio of the substracted voltages and the added voltages then we get the SWR.

So: From voltages as you well stated.

In the general case the reflectioncoefficient can be a percentage plus an phase shift. That is what the Smith chart shows.

Lots of things to tell about that subject. The following might be interesting for you:




the first ten pages of this presentation will tell you what you want to know.


73

Arie PA3A

Op 3-8-2022 om 17:52 schreef Russ: