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  • Writer's picturextgaby

Guanella 2/1 current balun

Updated: Jan 10, 2023

Picture:


Upper core = FT240-43

1:1 curent balun





Lower core = FT240-43

1:4 Guanella current balun


Wires are wound in a different way!

Take a look at te picture!



Schematic:


U out = 1.5 X U in ==> Impedance Out = 1.5 X 1.5 = 2.25 X impedance in.

@ 50 Ohms in, Out = 112,5 Ohms.


Measuring results:

Return Loss:


SWR:


Tabel: Smith:




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