II-2HOII-2. Network Parameters
(1) Network Parameters
h-parameters
v h 1 = 11 i h 2 21
h i1 12 h v2 22
(4)
z-parameters
v1 = z11i1 + z12i2 v2 = z21i1 + z22i2
or in matrix form
v z 1 = 11 v z 2 21
ABCD-parameters
(1)
v1 A = i C 1
B v2 i D 2
(5)
z12 i 1 i z22 2
Microwave limitation
(2)
(1) impossible short/open circuit for broadband microwave frequency (2) Active 2-port might oscillate under short/open circuit at MW frequency
y-parameters
i y 1 = 11 i y 2 21
y12 v1 y22 v2
(3)
-> Scattering Parameters
ICE651 MMIC Design
II-2-1
II-2. Network Parameters
(2) Impedance and Admittance Network Parameters
Z 11 =
Z 12 = Z 21 =
v1 i1
v1 i2 v2 i1
i2 = 0
= Z A (Z B + Z C )
= = ZA [ Z C ( Z A + Z B )] ZA + ……
