[TowerTalk] Baluns/tutorial/notes.

[Richard (Rick) Karlquist]

Let me greatly simplify this discussion.

Get a TWO port network analyzer and connect
the DUT from the center conductor of port 1
to the center conductor of port 2.  Measure
S22 and calculate the impedance of the DUT.
This eliminates most of the well known gotcha's
associated with measuring high impedances.
You should be able to measure even 50,000
ohms with no trouble.

If you just want to know the magnitude of the
impedance, you can fake a network analyzer
by using a signal generator and a receiver.
Just measure insertion loss of the balun.

Only works for floating DUT's but that includes
baluns.  It also doesn't matter much if the
terminals are far apart physically.

Rick N6RK