Re: New file uploaded to PHSNA (Balun meaqsurement unsatisfactory)


Steven Dick
 

Hi Nivar_P. Your writeup says you are using two identical cores with identical 8 turns of bifilar windings configured to work as a 4:1 balun. Not sure how you are electrically interconnecting the bifilar windings on the two cores. Maybe you could post a schematic? Most baluns I've seen use a single core.  It is acting like you don't have good enough coupling between the windings in the bifilar pairs.  What is your physical configuration of the bifilar windings? The wires need to be closely adjacent to each other in the bifilar pairs to act as a transmission line at high frequencies.

"Digital Steve" K1RF

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