Two 2-port networks with following parameters are connected in series. Z – parameters of network - 1 - = 5 6 9 2 Y-parameters of network – [95 2 7 4 The z-parameters of series combination network is

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Z parameter

The Z-parameters that are the impedance parameters of a two-port network are defined by expressing the two-port voltages V1 and V2 in terms of two-port currents I1 and I2. The Z-parameters are calculated by open circuiting one of the two ports at a time henceforth they are called open-circuit impedance parameters.