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File /Impedance Matching EBook - July 2021.pdf uploaded #file-notice


NanoVNAV2 2021/09/07 06:30

The following files have been uploaded to the Files area of the NanoVNAV2@groups.io group.

* /Impedance Matching EBook - July 2021.pdf ( https://groups.io/g/NanoVNAV2/files/Impedance Matching EBook - July 2021.pdf )

*By:* RandMental <randmental@gmail.com>

*Description:*
Great ebook on Impedance matching

W0LEV 2021/09/08 17:02

There are a few misstatements in the write-up. First, the claim is made
that the antenna feed point, coax at the feed point, coax in the shack all
have to be matched, i.e., 50 ± j0 ohms for maximum power transfer - not
true. Then later in the write-up, he demonstrates how mismatching at all
three interfaces can yield a matched solution in the shack - true. But the
write-up does not treat the efficiency of power transfer in the mismatched
case. Series or shunt stub matching is a common technique which is
illustrated and sound in theory and practice.

So use caution with interpreting the prose in the write-up.

Dave - WØLEV

On Tue, Sep 7, 2021 at 1:30 PM NanoVNAV2@groups.io Notification <
noreply@groups.io> wrote:

> The following files have been uploaded to the Files area of the
> NanoVNAV2@groups.io group.
>
> - /Impedance Matching EBook - July 2021.pdf
> <https://groups.io/g/NanoVNAV2/files/Impedance%20Matching%20EBook%20-%20July%202021.pdf>
>
> *By:* RandMental <randmental@gmail.com>
>
> *Description:*
> Great ebook on Impedance matching
>
>
>
>

--
*Dave - WØLEV*
*Just Let Darwin Work*

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