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Re: At which point do we take the value of impedance to tune an antenna?


 

An excellent learning tool by just jumping in is SimSmith:



There is also an excellent tutorial (and a lot more) by W?QE at:



Dave - W?LEV

On Wed, Aug 3, 2022 at 10:42 PM Roger Need via groups.io <sailtamarack=
[email protected]> wrote:

Time is well spent learning a bit about the Smith Chart.

You can plot a complex impedance and then draw a circle that intersects
the point and get the SWR. You can also measure the distance and get the
reflection coefficient and gamma.

A picture is worth a thousand words so here is a plot on a Smith Chart of
several complex impedances that all result in a SWR of 2 and a reflection
coefficient of 0.333 ( a Reflection Loss of 9.54 dB). The 40 + j30 from
the earlier discussion is one of these.

Roger





--
*Dave - W?LEV*
*Just Let Darwin Work*


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Dave - W?LEV

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