I have a very basic and rather silly question which I have not found any suitable answer yet.
Suppose I have 2 transmission lines. One carrying a high frequency sinusoidal signal. Is there coupling in a 2nd transmission line close to the 1st one if:
1) The second transmission line is an open circuit?
2) The second transmission line is properly grounded?
Will there be a potential difference between the edges of the second transmission line in either case?
If NO, then why and if YES, then will it result in reverse coupling?
Best Answer
The problem you appear to have is that you are failing to recognize that all cables, wires and electrical connections are or can be regarded as transmission lines.
If you accepted this truth your question would become trivial i.e. "suppose there are two wires and one carries a signal, is there coupling from this wire to the next".
The answer always will be yes of course.