Extension of Vratsanos' theorem and consequences†
N.K. Bose · International Journal of Electronics · 1973
A simple genera] proof of an extension of Vratsanos' theorem is given and this is used to arrive at definite conclusions regarding the upper bound of the magnitude of the sensitivity function, |SR n Z 0 ( jω) |, where Rn is the terminating resistance of an arbitrary linear two-port, with input impedance Z0.