el_coronel
Junior Member level 1
Why the VSWR of a balun from its outputs (balanced side) is always about ~2.5:1 or higher?
I simulated and measured a series of baluns (e.g. TC1.5-52 from Minicircuits) and had the VSWR responce as shown at the picture attached.
It is a 1.5:1 balun, the input impedance was 50 Ohm, each of the outputs from the balanced side was loaded to a 37.5 Ohm impedance to have a 75 Ohm differential impedance. Input VSWR was about 1.5:1, which is acceptable.
I simulated and measured a series of baluns (e.g. TC1.5-52 from Minicircuits) and had the VSWR responce as shown at the picture attached.
It is a 1.5:1 balun, the input impedance was 50 Ohm, each of the outputs from the balanced side was loaded to a 37.5 Ohm impedance to have a 75 Ohm differential impedance. Input VSWR was about 1.5:1, which is acceptable.
Last edited: