z-parameters inverse
y-parameters
a-parameters inverse
b-parameters
h-parameters inverse
g-parameters
page 77
V1 = z11I1 + z12I2
V2 = z21I1 + z22I2
I1 = y11V1 + y12V2
I2 = y21V1 + y22V2
V1 = a11V2 + a12I2
I1 = a21V2 + a22I2
V2 = b11V1 + b12I1
I2 = b21V1 + b22I1
V1 = h11I1 + h12V2
I2 = h21I1 + h22V2
I1 = g11V1 + g12I2
V2 = g21V1 + g22I2
7.1 PARAMETER VALUES
• obviously some of the parameters are impedance, while others are admittance. They can be easily determined by setting other parameters to zero, and measuring relevant voltages/currents.
7.1.1 z-Parameters (impedance)
• The values are as below,
page 78
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description |
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z11 |
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V1 |
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Ω |
Input Impedance - port 1 impedance with port 2 |
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----- |
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open circuit. |
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I1 |
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z12 |
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V1 |
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Ω |
Transfer Impedance - ratio of port 1 voltage to port |
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----- |
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2 current with port 1 open circuit |
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I2 |
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z21 |
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V2 |
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Ω |
Transfer Impedance - ratio of port 2 voltage to port |
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1 current with port 2 open circuit |
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I1 |
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z22 |
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V2 |
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Ω |
Output Impedance - the impedance of the output |
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terminals with port 1 open circuit. |
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I2 |
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• The equivalent circuit for the z-parameters is shown below, |
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I1 |
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z11 |
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z22 |
I2 |
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+ |
z12I2 |
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+ z21I1 |
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V1 |
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V2 |
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