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How do we calculate the inverse hybrid-pi in low frequency H-parameters g11 of a two-port network?

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How do we calculate the inverse hybrid-pi in low frequency H-parameters g11 of a two-port network?

(a) g11 = I1 / V1

(b) g11 = I2 / V1

(c) g11 = I1 / V2

(d) g11 = I2 / V2

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The above asked question is from Hybrid PI Conductances in Low Frequency H Parameters in division High Frequency Transistor of Electronic Devices & Circuits

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The correct choice is (a) g11 = I1 / V1

For explanation: The inverse hybrid-pi conductance in low frequency H-parameters g11 for a two-port network is calculated by open circuiting the output terminal. In this case, the current I2 is equal to zero. The parameter g11 is calculated by taking the ratio of input terminal current over input terminal voltage.

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