All my textbooks are at the old place, but with the freaks you're never quite without books.
I have a long line, with 75ohm output cascade, 75ohm cable and I need to make a 75ohm input cascade. I know how to match impedance in unisolated circuits, but I want to make my circuit isolated.
More specifically, I have a HDSL output transformer which has 1:2 turn ratio, suits my frequency range and has primary inductance of 1.2mH - that's all I could gather from manufacturer datasheet (HALO). Passive resistance of windings is very low, below 10ohm. Input signal frequency is approx 6MHz, square wave.
The question is, how do you calculate input impedance of a cascade with a transformer? How can you change it and, therefore, can this transformer be used.
Thank you in advance!