II-2HOII-2. Network Parameters(1) Network Parameters h-parametersv h 1 = 11 i h 2 21h i1 12 h v2 22 (4) z-parametersv1 = z11i1 + z12i2 v2 = z21i1 + z22i2or in matrix formv 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-parametersi y 1 = 11 i y 2 21y12 v1 y22 v2 (3)-> Scattering ParametersICE651 MMIC DesignII-2-1II-2. Network Parameters(2) Impedance and Admittance Network ParametersZ 11 =Z 12 = Z 21 =v1 i1v1 i2 v2 i1i2 = 0= Z A (Z B + Z C )= = ZA [ Z C ( Z A + Z B )] ZA + ……
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