Lesson 3 Two-Port Parameters

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Lesson 3Two-Port Parameters

• Types of Two-Port Parameters
• The Hybrid g Parameters
• Measurement/Evaluation of g Parameters
• Equivalent Circuit for g Parameters

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Two-Port Parameters
i1
i2


Two-port network
v2
v1
-
-
dependent variables
independent variables
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Utility of the Hybrid g Parameters
x1 x2 y1 y2 Two-Port Parameters
i1 i2 v1 v2 Open-circuit impedance
v1 v2 i1 i2 Short-circuit admittance
i1 v2 v1 i2 Hybrid h
v1 i2 i1 v2 Hybrid g
v2 -i2 v1 i1 Transmission
v1 -i1 v2 i2 Inverse-transmission
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Requirements for Two-Port Parameters

• The set of two-port parameters must be such that
  it can be measured and/or evaluated.
• The set of two-port parameters must lead to a
  simplified equivalent circuit of the physical
  circuit that it models.

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The g Parameters
i1
i2


Two-port network
v2
v1
-
-
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Equivalent Circuit Model
KCL
KVL
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Example
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