In a long transmission line, the impedance measured from the beginning of the line, when its end is open circuit, is the reciprocal of the impedance measured from the beginning of the line, when its end is short circuit. Which one of the following relations is correct among the parameters of the transmission matrix of this line?

1) $A+B=\frac{1}{A-B}$

2) $A+B=\frac{1}{B-A}$

3) $A=\sqrt{1-B^2}$

4) $A=\sqrt{B^2-1}$

Transcribed Image Text:

[T] = A = [ B] C D