For the transistor amplifier in Example 17.8 with z = [[1000, 10], [-10^6, 10^4]], what is the power gain GP when driven by a source with 500 ohm resistance and terminated in a 10 kOhm load?
Explanation
The power gain of a two-port amplifier is the ratio of the power delivered to the load to the power delivered by the source. It can be calculated once the port voltages and currents are found using the two-port parameter equations and the terminal conditions.
Other questions
What is a defining electrical characteristic of a 'port' in a multiport network?
The admittance parameters (y-parameters) are also known by what name, based on the measurement conditions required to determine them?
What condition defines a bilateral two-port network, leading to the property of reciprocity?
How are the overall y-parameters of a composite network formed by connecting two two-ports in parallel determined?
The impedance parameters (z-parameters) are defined under what measurement conditions?
What is the relationship between the hybrid parameters h12 and h21 for a bilateral network?
Transmission parameters (t-parameters) are most useful for analyzing what type of network connection?
For a resistive two-port network with a 5 ohm resistor from input to ground, a 10 ohm resistor between input and output, and a 20 ohm resistor from output to ground, what is the value of the short-circuit transfer admittance, y21?
For a T-network of resistors with a 45 ohm series input resistor, a 25 ohm shunt resistor to ground, and a 75 ohm series output resistor, what is the open-circuit input impedance, z11?
For a resistive bilateral circuit with h11 = 3.4 ohms and h22 = 0.1 S, what is the value of the open-circuit reverse voltage gain, h12?
What is the determinant (delta-t) of the transmission matrix for any reciprocal network?
If two-port network A has a t-matrix tA and network B has a t-matrix tB, what is the t-matrix for the cascaded combination where A is followed by B?
The defining equations for z-parameters are V1 = z11*I1 + z12*I2 and V2 = z21*I1 + z22*I2. Which variables are typically considered the independent variables in this formulation?
A transistor amplifier is represented by the hybrid parameters h11 = 1200 ohms, h12 = 2x10^-4, h21 = 50, and h22 = 50x10^-6 S. If the input is driven by a 1 mV source with an 800 ohm series resistance, and the output is connected to a 5 kOhm load, what is the current gain (GI = I2/I1)?
How is the hybrid parameter h11, also known as input impedance (hi), measured?
In the Y-Delta transformation, how is the impedance ZA of the Delta network calculated from the impedances Z1, Z2, and Z3 of the Y network?
For the resistive two-port in Example 17.4, with y11 = 0.3 S, y12 = -0.1 S, y21 = -0.1 S, and y22 = 0.15 S, what is the input impedance Zin when the output is terminated with a 4 ohm resistor?
How is the open-circuit transfer impedance z21 defined?
A T-network consists of two 50 ohm resistors in the series arms and a 25 ohm resistor in the shunt arm. What is the value of z22 for this network?
If a two-port has y-parameters y11 = 0.3 S, y12 = -0.1 S, y21 = -0.1 S, and y22 = 0.15 S, what is z11 for the same network?
For the transistor amplifier circuit in Figure 17.16, the y-parameters are found to be y11=2.5 mS, y12=-0.5 mS, y21=39 mS, and y22=0.6 mS. What is the output impedance Zout if the amplifier is driven by a current source with no parallel resistance (an ideal source)?
A two-port network is described by the z-parameters: z11=1000, z12=10, z21=-10^6, z22=10^4 ohms. What type of element is primarily responsible for the fact that z12 is not equal to z21?
What is the primary reason for using the y-parameter equivalent circuit shown in Figure 17.13a or 17.13b?
If two identical T-networks, each with z-parameters zA, are connected in series, what is the z11 parameter of the combined network?
The alternative subscripts h_i, h_r, h_f, and h_o for hybrid parameters correspond to which standard h-parameters, respectively?
For the bilateral resistive network in Figure 17.24, consisting of a 1 ohm input resistor, a 6 ohm output resistor, and a 4 ohm shunt resistor, what is the value of h11 (short-circuit input impedance)?
A T-network has a 20 ohm input resistor, a 40 ohm output resistor, and a 10 ohm shunt resistor. What is h12 (open-circuit reverse voltage gain) for this network?
A resistive two-port is defined by the transmission parameters t11=1.2, t12=6.8 ohms, t21=0.1 S, and t22=1.4. What is the value of V1 if V2=10 V and I2= -1 A (current leaving the output port)?
Network A has t-matrix tA = [[1.2, 6.8], [0.1, 1.4]]. Network B has resistance values twice as large, resulting in t-matrix tB = [[1.2, 13.6], [0.05, 1.4]]. What is the t11 parameter of the combined network t = tA * tB?
What is the physical unit of the hybrid parameter h12?
What does the reciprocity theorem state in terms of an ideal voltage source and an ideal ammeter in a passive linear bilateral circuit?
For a two-port with y-parameters, if V1 = 10 V and V2 = 5 V, and the network is defined by y11=0.5 S, y12=-0.2 S, y21=-0.2 S, y22=0.4 S, what is the current I1 entering the input port?
What is the Thévenin equivalent output impedance (Zout) of a two-port described by z-parameters when the input is driven by a source with impedance Zg?
Which parameter set is defined by the matrix equation V = zI, where V is the voltage vector and I is the current vector?
A simple pi-network has a 5 ohm input shunt resistor, a 10 ohm series resistor, and a 20 ohm output shunt resistor. What is the value of y22?
If a network has z-parameters z11 = 70, z12 = 50, z21 = 50, z22 = 150 ohms, what is the value of y11?
Which two-port parameter is defined as the ratio I2/I1 when V2=0?
If a gyrator is a passive element that is not bilateral, what property would its y-parameter matrix exhibit?
What is the primary conceptual difference between a mesh and a loop in network topology?
In general nodal analysis using a tree, how many branches are required to form a tree in a connected network with N nodes?
When performing general loop analysis, a current variable is assigned to which set of elements?
In a T-equivalent circuit for a transistor, the emitter resistance is 50 ohms, base is 500 ohms, and collector is 20 kOhms. Using general loop analysis, how many loop equations are required to solve the circuit when a source and load are connected?
What is the physical unit of the transmission parameter t12?
Which of the following describes a 'tree' of a network graph?
If a resistive two-port is described by h-parameters h = [[100, -2], [5, 0.1]], what are the new h-parameters if a 25 ohm resistor is connected in parallel with the input port?
The input impedance of a one-port network can be found using the circuit determinant delta_z and its minor delta_11 using which formula?
How is the input admittance Yin of a one-port network expressed in terms of the nodal admittance determinant delta_y and its minor delta_11?
The matrix transformation from z-parameters to y-parameters is given by y = z^-1. Given z = [[45, 25], [25, 75]], what is y22?
In the context of transistor h-parameters, what does h_fe represent?