I have a basic question about the path of a signal traveling on a transmission line with a short circuit as termination.
Suppose that this line is driven by another line (at left) with Zc = 50 Ohm characteristic impedance. The line in my scheme is matched with it but its termination is not, so there will be reflection (in this case total reflection because it is a short circuit load).
I'd say that the signal which comes from left travels along al the line in the scheme, arrives at the short circuit, and then it is reflected back.
But if you evaluate the input impedance of the transmission line and then find the correspondent reflection coefficient, you see that there is total reflection also at the beginning of the line (as shown in the scheme with the equation |Ґ(0)| = 1). From this consideration, it seems that the signal is reflected at the beginning of the line.
It's seems not correct for me since the signal knows the presence of the short circuit only when it arrives at it, but math says that |Ґ(0)| = 1. Which is the solution? And why do people often evaluates the input reflection coefficient, since the reflection will be in other positions (I think so)?