On 7/18/22 12:23 PM, Victor Reijs wrote:
With ref 113 being ¡°O. M. Woodward, ¡°Balance Quality Measurements on
Baluns,¡± IEEE Transactions on Microwave Theoiy and Techniques, vol. 31, no.
10, pp. 821-824, Oct. 1983.¡± I have not located this, so no further comment
on the technique at present.
Indeed that is the reference I would like to read also. Does someone have a
copy?
google for "woodward balun balance quality 1983"
The paper works through the math of using a VNA to do the measurement as a 3 port device.
I did a little research in to commercial baluns, ¡°mini-Circuits¡± produce a
very wide range of rf transformers (500+), there may be something suitable
there, I have yet to explore possibilities
Yes, and they publish N-port VNA measurements. 4 port for most of the baluns.
I think the 1:1:1 T-622-KK81 can do the function.
I use the T1-1T-65X - 6 pin DIP package 200 kHz to 80 MHz - it's 1:1 with a center tap. If you need 2:1 the T2-1T-65X has a secondary 2x the primary, with a center tap.
The 622-kk81 is a non catalog part. I'd find something that's in stock. If you need 3 isolated windings, I'm sure they've got something.
