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Directional coupler detail #16

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akohlsmith opened this issue Oct 31, 2018 · 1 comment
Open

Directional coupler detail #16

akohlsmith opened this issue Oct 31, 2018 · 1 comment

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@akohlsmith
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Is there any documentation on the directional coupler? It looks like some kind of large ferrite over part of the board, but I can't see any information other than that the PCB has a stripline.
@xaxaxa
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xaxaxa commented Nov 3, 2018

it's a resistive bridge plus a balun, similar to the coupler used here: http://hforsten.com/improved-homemade-vna.html

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@akohlsmith @xaxaxa