What are ABCD Parameters ?ABCD Parameters DefinitionABCD parameters are used to model transmission lines in a two-port network, linking input and output voltages and currents.ABCD parameters (also known as chain or transmission line parameters) are generalized circuit constants used to help model transmission lines. More specifically, ABCD parameters are used in the two port network representation of a transmission line. The circuit of such a two-port network is shown below:ABCD Parameters of a