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Two Port Network, Driving Point And Transfer Functions


Transfer impedance, Z(s) = 643.png

 


Transfer admittance
648.png 


Voltage transform function, 
653.png 


Current transform function, 
658.png 


Z-parameters (or impedance parameters):

663.png...(ii)


V1 = Z11I1 + Z12I2 ...(iii)


Condition of reciprocity of Z-parameters :

Z12 = Z21


Condition of symmetry of Z-parameters :

Z11 = Z22


Y-parameters (or short circuit Admittance parameters) :

668.png 

I1 = Y11V1 + Y12V2

I2 = Y21V1 + Y22V2


Condition of reciprocity : Y12 = Y21


Condition of symmetry : Y11 = Y22


h-parameters (or hybrid parameters)

V1 = h11I1 + h12V2 ...(i)

I2 = h21I1 + h22V2 ...(ii)


Condition of reciprocity of h-parameters : h12 = – h21


Condition of symmetry of h-parameters : h11h22 – h12h21 = 1


ABCD parameters (or transmission parameters)

673.png 
 

V1 = AV2 + B(– I2)
 

I1 = CV2 + D(– I2)
 

Condition of reciprocity :AD – BC = 1

Condition symmetry : A = D





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