3-Lesson_Notes_Lecture32_ee205 - EE 205 Dr. A. Zidouri E...

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EE 205 Dr. A. Zidouri - 1 - E le ctric Circuits II Two-Port Circuits Interconnected Two-Port Circuits Lecture #32
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EE 205 Dr. A. Zidouri - 2 - The material to be covered in this lecture is as follows: o Terminated Two-Port circuit o Terminal Behavior o The Six characteristics of the terminated two-port circuit in terms of z parameters o Interconnected Two-Port Circuits After finishing this lecture you should be able to: ¾ Analyze The Terminated Two-Port circuit ¾ Determine The characteristics of the terminated circuit in terms of z parameters ¾ Recognize the different Interconnection of the Two-Port Circuits ¾ Analyze The Cascade Connection
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EE 205 Dr. A. Zidouri - 3 - T e rm ina ted Tw o -P o r t C ircu it The Circuit is driven at port 1 and loaded at port 2 A typically terminated two-port model is shown in Fig. 44-1 Fig. 44-1 A Terminated Two-Port Model v 1 v 2 Z g Z L i 1 i 2 V g Z g represents the internal impedance of the source Z L represents the Load impedance V g represents the internal voltage of the source Analysis of this circuit involves expressing the terminal currents and voltages as function of V g , Z L , and Z g . Terminal Behavior: Six characteristics of the terminated two-port circuit define its terminal behavior. 1. The input impedance 1 1 in V Z I = or admittance 1 1 in I Y V = 2. The output current 2 I 3. Thevenin voltage and impedance ( ) , Th Th VZ with respect to port 2
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EE 205 Dr. A. Zidouri - 4 - 4. The current gain 2 1 I I 5. The voltage gain 2 1 V V 6. The current gain 2 g V V The six characteristics in Terms of the z Parameters: We develop the expressions using the z-parameters to model the two-port portion of the circuit.
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This note was uploaded on 01/16/2010 for the course EE ee205 taught by Professor Profsyed during the Spring '09 term at King Fahd University of Petroleum & Minerals.

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3-Lesson_Notes_Lecture32_ee205 - EE 205 Dr. A. Zidouri E...

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