Guanella 2/1 current balun

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: