asap A 3-stage amplifier is to have an overall noise temperature nogreater than 75°K. The overall gain of the amplifier is to be at least40 dB. The amplifier is to be built by adding a low-noise first stageto an existing amplifier with existing characteristics as follows:Stage 2 has 20 dB power gain and 3 dB noise figure. Stage 3 has15 dB power gain and 6 dB noise figure.a. What is the unitless gain of the first stage?b. What is the overall noise factor of the amplifier? b. What is the overall noise factor of the amplifier?c. What is the unitless gain of stage 2?d. What is the noise factor of stage 3?e. What is the noise factor of stage 2?f. Calculate the maximum noise figure (in dB) that the first stagecan have.

We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Answered: A 3-stage amplifier is to have an…

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

See similar textbooks

Similar questions

Suppose that each output channel of a computer’ssound card can be represented by a 1-V ac sourcein series with a 32-Ω resistor. Each channel ofthe amplifier in the external speakers has an inputresistance of 20 k , and must deliver 10 W intoan 8-Ω speaker. (a) What are the voltage gain, currentgain, and power gain required of the amplifier?(b) What would be a reasonable dc power supplyvoltage for this amplifier?
For the cascaded amplifier of the figure below, calculate the input impedance of the first stage, output impedance of the second stage, total voltage gain, and the output voltage if Vs= 1mV.
(a) What are the gain and bandwidth of the individual amplifier stages as shown if the op amps have Ao = 105 and fT = 3 MHz? (b) What arethe overall gain and bandwidth of the three-stage amplifier?
The resistors in the difference ampliﬁer shown are slightly mismatched due to their tolerances. (a) What is the ampliﬁer output voltage if v1 = 3.90 V and v2 = 4.10 V? (b) What would be the output voltage if the resistor pairs were matched? (c) What is the error in amplifying (v1 −v2)?
2. How can the amplitude of the output voltage be increased? 3. Discuss the effect of increasing the input frequency on the amplitude of the output signal 4. How can you change the gain of a non-inverting amplifier? 5. How the non-inverting amplifier can be useful in practice?
The figure below shows an inverting amplifier connected to a load RL. Determine the power gain of the amplifier. power gain for the amplifier, G, is defined as the power ratio that reaches the load RL versus the power supplied by the source VS.
We have an amplifier that draws 2A from a 15-V dc power supply. The input signal current is 1 mA rms, and the input resistance is 2 kΩ. The amplifier delivers 12 V rms to an 8-Ω load. Determine the power dissipated in the amplifier and the efficiency of the amplifier.
A three stage amplifier has the following gains and noise factor for each stage: 1st stage Gain=10 dB and Noise Factor = 2; 2nd stage Gain=16 dB and Noise Factor = 4; and 3rd stage Gain=20 dB and Noise Factor = 5. Suppose another amplifier stage (4th stage) is connected, what would be its noise figure (4th stage) in dB to provide as overall noise factor of 2.3? (Use two decimal places)
What is the output impedance of an Ideal Operation Amplifier? What is the open loop gain of an Ideal Operation Amplifier? What is the gain of a voltage follower operational amplifier circuit? What is the input impedance of this circuit? Draw the circuit. How can I add two voltages values together with on op amp? Using op amps, how to make an AD Converter? A DA Converter? What components determine the frequency of an astable, 555 oscillator? Draw the circuit. Draw a circuit for both an astable and a monostable, 555 multivibrator. What is the duty cycle and percentage duty cycle of a pulse train or square wave? What is the overshoot, rise time, fall time, and pulse width of a pulse and where on the waveform is each measured?
An amplifier is formed by cascading two operational-amplifier stages, as shown (a). (a) Replace each amplifier stage with its two-port representation. (b) Use the circuit model from part (a) to find the overall two-port representation (Av, Rin, Rout) for the complete twostageamplifier. (c) Draw the circuit of the two-port corresponding to the complete two-stage amplifier.
amplifier has a gain of unity andVcc= 25Vdc, RL= 8Ω and Vi(p-p)= 34V.a. Calculate the input power, the output powerand the efficiency of the amplifier.b. Consider the operation mode that the two output transistors dissipate the maximum power. For this operation mode, find the output voltage across the load and the power dissipated by each transistor.
Suppose the ampliﬁer shown has a differential-mode gain of 2500 and a CMRR of 80 dB. What is the output voltage if V1 = 5.001 V and V2 = 4.999 V? What is the error introduced by the ﬁnite CMRR?

SEE MORE QUESTIONS

Recommended textbooks for you

Power System Analysis and Design (MindTap Course …

Electrical Engineering

ISBN:

9781305632134

Author:

J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:

Cengage Learning