Which is probably beyond a general interest or benefit. That is the best point yet! We arbitrarily assign a target impedance, with no idea what the system common mode impedance is. Desktop common mo
I'm liking my current forcing, 1/4 wavelength and 3/4 wavelength coaxial baluns more and more! 73 Frank W3LPL choke balun reduces common mode. Outside of that, the air core choke can air-core chokes.
On low bands, the Q of resonant stubs is fairly low. Therefore, the effective common mode impedance of these baluns will not be extremely high. If you want a single band choke, you could get a higher
Hi Rick, A monoband current forcing balun doesn't require as much coax as you might think. The 1/4 wavelength of coax would probably be needed anyway, so the only "extra" length is the 3/4 wavelength
Very interesting concept. Someone really thought that out, and it appears workable at first look. It would probably make a great 1:1 single band VHF or UHF balun, unless I missed something. I see it
I see a problem now!!!! The only common mode issue would be if the center point of the elements, which is the common shields, does not sum to zero volts. Look at a 16.67 load at one element side, an
Hi Tom, I'm sure you're correct that a current forcing balun performs poorly when driving an unbalanced load. This shouldn't be an issue when using it at the balanced feedpoint of a properly construc