Marchand balun guidelines

Hi all,

I want to design Marchand balun 50-25 Ohm.
I saw&read some papers, but till now I didn't understand how to design it...
Please kindly suggest step-by-step guidelines...

Thx
Dave

Hello DDavid

Have you had a chance to look at this paper.it explains Marchand Balun with such a great detail.

http://www-ee.uta.edu/online/adavis/...pi-1_balun.pdf

Regards
Rotmanlens

Hi

Yep,
10minutes ago...

Example that they show is not understandable, too much assumptions...

how to calculate the impedance?

Dave

any one?


Dave

DO anybody know how to do it?

I think this paper is helpful.
Maybe your question is how to decide the Zoe and Zoo of coupled line. I guess you've known the coupling coefficient you need (50--25ohm), then ADS tools "linecalc" can help.