A reciprocal two-port requires three independent parameters to describe it. For instance,
the set of parameters (A, B, C) will describe it since the fourth parameter Dcan be obtained
from the constraint AD – BC 1 arising out of the reciprocal nature of the network.
ABCDparameters are widely applied in the analysis of transmission lines under
sinusoidal steady-state. However, analysts prefer another equivalent formulation when it
comes to analysis of transmission lines under transient conditions or with aperiodic inputs.
Similarly, filter designers favour this alternative formulation ...
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