Image transfer coefficient definition

image transfer coefficient

for a linear passive two-terminal-pair network terminated with its image impedances, half the natural logarithm of the product of the phasors U1 and I1 representing the voltage and the electric current at the input divided by the product of the phasors U2 and I2
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-15-25

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