Use the direct calculation and the short-circuit time constant technique to estimate the upper- and lower-cutoff frequencies of a multistage amplifier.

Q: Consider a modulating signal of 20khz that is applied to an FM modulator, whose modulation index (β)…

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Q: Discuss and explain all capacitive reactances present in a BJT amplifier when frequency of the input…

A: If frequency is lower than mid frequency range , then Cc and Ce will comes into picture. And they…

Q: The Miller capacitance effect appears according to the internal capacitance of . . and . .since the…

A: Miller capacitance is the result of the Miller effect. Now, Miller effect is the effect that results…

Q: signal are equal. The function of positive portion of the baseband signal is f(t)=t2 while the…

A: Given, The maximum instantaneous power is 12 W. The total signal time is 12 seconds.

Q: Generally, why are capacitors used in filters more than inductors? What is the gain/loss in dB of a…

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Q: Q1/which is better wide bandwidth range or narrow one? Why?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: In FM system the modulating signal is 2.4v and 500HZ, the peak frequency deviation is 4.8KHZ. Now if…

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Q: Describe the general characteristics of the equivalent circuits that apply to the low…

A: In Low-frequency range the coupling and bypass capacitors must be included in the equivalent circuit…

Q: The Miller capacitance effect appears according to the internal capacitance of .....................…

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Q: given in the figure? Note-1: the output impedance of the transistor r0 will be taken into account in…

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Q: c) What is the noise figure (in dB) of the cascaded transmission line and amplifier?

A: c) What is the noise figure (in dB) of the cascaded transmission line and amplifier?…

Q: (a) What is the short-circuit current gain (magnitude and phase) at 50 MHz for a BJT with rx = 250…

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Q: hat is the relationship between duty cycle and gain bandwidth?

A: Gain bandwidth- The gain bandwidth product is an important parameter for any analog amplifier and it…

Q: b- ]Define resonance. Explain how can it be used to enhance the gain of an amplifier. Can we use it…

A: Since you have asked multiple questions so we will solve the first question for you. If you want any…

Q: The discrete-circuit common-emitter amplifier in figure, the transistor is operating at a dc…

A: Given,Ic=1mAβ=120fT=1GHzCμ=0.5 pF

Q: Common-Emitter Amplifier and AC Analysis

A: Describe Common Emitter Amplifier and its AC analysis

Q: Draw the hybrid-p equivalent circuit of BJT for high frequency.

A: The operation mode of transistor depend on the  biasing of  junction  BJT.  The four mode of…

Q: Q2: How many samples are needed per one second to sample a baseband signal, if you know that the…

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Q: 6. Evaluate the digital modulated signal given below and develop an output equation of the modulated…

A: In above phase shift keying modulation technique is used.

Q: What is the transfer function for the voltage gainof the amplifier as shown?

A: From the given diagram, the expression for the input voltage is given by  vi=voR1R1+R2∥C    .......1…

Q: What are resistors used for?  What are capacitors used for?   What are transistors used for? What…

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Q: Q.6:- Draw the frequency response of the amplifier circuits and discuss the influence of the bypass,…

A: Given: Frequency response of the amplifier circuits Required: Influence of the bypass, coupling and…

Q: For the circuit shown below: 1) Calculate the DC bias point for the transistor. 2) Estimate the…

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Q: How do I calculate the 20 dBm signal power drop within 50 meter distance,when theres humidity,…

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Q: provide the diagram of the h-parameter model of the given ce amplifier configuration

A: The ac small signal equivalent circuit can be drawn by removing DC source from the circuit and…

Q: Theoretical calculations: 5. How does the bandwidth change in relation to increasing signal…

A: How does the bandwidth change in relation to increasing signal amplitude ?

Q: Noise generated by an amplifier of radio is an example for?

A: Noise generated by an amplifier of radio is a type of random signal because it has uncertainty…

Q: Consider the voltage of a baseband signal varies over the range -40V to 60V. This signal is sampled…

A: Step size, ∆=Vmax-VminL∆=60--408∆=1008∆=12.5 V

Q: Regarding phase modulation (PM), an increase in the PM index, µ, results in an increase in the…

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Q: Give a typical circuit by which FM threshold has been reduced.

A: A message signal is transferred from the sender to the receiver end. The signal is transmitted…

Q: A transistor has fT = 500 MHz and βF = 75.(a) What is the β-cutoff frequency fβ of this transistor?…

A: a) Given fT=500 MHzβF=75 Calculating cutoff frequency  fβ=500 MHz75fβ=6.67 MHz

Q: One of the advantages of using a cascode current source is to improve the frequency response. O True…

A: In this question, Choose the correct options One of the advantage of using the cascade sources is to…

Q: Define the resonance? Explain how can use it? Can we use it for every amplifier? Why ?

A: Resonance is the phenomenon of increased amplitude that occurs when the frequency of a periodically…

Q: Figure Q2(b) shows a BJT amplifier with ß= 120 and VBE = 0.7 V. (i) Calculate current, IB, IC and IE…

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Q: Consider the common base (CB) amplifier shown in Figure Q1.a. 1) Draw the low-frequency small signal…

A: The small signal equivalent circuit can be obtained by replacing the transistor with its equivalent…

Q: Determine the critical frequencies associated with the low-frequency response of the BJT amplifier.…

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Q: Q 4. Design a common-source depletion MOSFET amplifier as shown in Figure 4 to give a midband gain…

A: common source depletion MOSFET amplifier is designed for given specification  20≤Amid≤25 Zin≥50kΩ…

Q: Describe briefly the effects of atmospheric conditions on the quality of signal.

A: Effects - (1) Rise in atmospheric temperature leads to decrease in quality of signal that means…

Q: For given BJT, β=200. The applied input frequency is 20 Mhz and net internal capacitance is 100 pF.…

A: According to the question, it is given that β = 200 Input frequency = 20 Mhz  Internal capacitance =…

Q: What are the advantages and disadvantages of single-sideband transmission? Briefly describe

A: In this question we will write advantages and disadvantages of single side band transmission....

Q: Find an estimate for the lower and upper cut-off frequencies for the amplifier circuit shown in…

A: According to the question we have to find the lower and upper cutoff frequency.

Q: What is the most likely IF for a mixer with inputs of 162 and 189 MHz?

A: In this question we need to find a intermediate frequency.

Q: q)what the advantages of using correlation measurements to improve signal detection?

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Q: Figure 6 shows the circuit diagram for a single stage NMOS amplifier realized with the transistor…

A: "According to the Company's policy we will solve the first three sub-parts of the question". Given…

Q: (b) Discuss the Armstrong's method of indirect FM generation in detail.

A: Edwin H. Armstrong patented a method for producing frequency modulated radio transmissions in 1933.…

Q: Why is having a certain bandwidth so crucial? Please provide more details.

A: The question is about bandwidth and it's importance

Differential amplifier

There are two amplifying stages with common degeneration in a differential amplifier.