I need an expert to choose the correct answer andprovide proof with a drawing or a law orsomething from a reliable source.Choose the correct answer:1. In AM, the over modulation scenario occurs when the amplitude of the modulating signal isthe amplitude of the carrier signal. (equal to, less than, greater than. not related).2. The noise signal can be studied intime and frequency domains).(only time domain, only frequency domain, both3. The diode in the envelope detector circuit iswave rectifier).(clipper, clamper, half wave rectifier, full4. In DSB-SC, the input SNR is the output SNR. (half, equal to, twice, not related).5. In cascaded systems, the total transfer function is the of individual systems' transferfunctions. (sum, subtraction, multiplication, division).

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Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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i)Modulation process takes place in the modulator with two injection signals namely data orinformation and carrier. It is a vital step in generating a decent signal for electronic communication.Whenever the carrier is modulated by the information signal, new signals at different frequenciesare generated as part of the process. These new frequencies occur in the frequency spectrum withinthe range of the carrier frequency. Conclude these frequencies and mathematically explain itsgeneration with the help of diagrams. A) Upper sideband and lower broadbandB) Lower sidefloor and upperside floorC) Lower peak and upper peakD) Upper sideband and lower sidebandE) Lower bandwidth and upper gainF) All of the aboveG) None of the above
One input to a conventional AM modulator is a 600 kHz carrier with amplitude of 22 V. The second input is a 20 kHz modulating signal that is of sufficient amplitude to cause a change in the output wave of +9 V. Determine: a. Upper and lower side frequencies. b. Percent modulation. c. Peak amplitude of the modulated carrier and the upper and lower side frequency voltages. d. Maximum and minimum amplitudes of the envelope. e. Expression for the modulated wave. Then, f. Draw the output spectrum. g. Sketch the output envelope.
Q2. For the scheme shown in Figure Q2, i. Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. ii. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. iii. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. 3 kHz cos 10,000nt Bascband signal cos? 1000nt Σ cos 22,000rt 4 kHz cos 36,000nt Figure Q2
4. Write down the general expressions of frequency modulated signal and phase modulated signal. And show the methods to generate FM signals.
please answer with detail solutions with formula
Q2. For the scheme shown in Figure Q2, i. Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. ii. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. i. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. 4 kHz cos 10,000xt Basebund signal cos 24,000mt cos 2000mt cos 32,000nt Figure Q2
Question 4 (a) A carrier and a modulating signals are shown in Figure 2. Sketch and label the modulated output signal in time domain for: i. the Frequency Modulation (FM) i. the Phase Modulation (PM). Carrier signal Modulating signal Figure 2 (b) The FM and PM modulators parameters are shown in Table 1. Table 1 FM modulator Deviation sensitivity 6 kHz/v Carrier frequency = 400 kHz Modulating signal = sin (2n 4 kr) PM modulator Deviation sensitivity 1.6 rad/v Carrier frequency = 300 kHz Modulating signal = 1.25 sin (2n 5 kr) i. Calculate the modulation indexes for both modulators. i. Sketch and label the frequency spectrum for both modulators.
..
A carrier signal is amplitude modulated by a sinewave. The resulting AM waveform is shown below. 3.5V- 1V- a) What is the amplitude of the carrier signal? b) c) To achieve 75 percent modulation, what amplitude of the modulating signal is needed? d) Calculate the effective voltage of the AM signal What is the modulation index?
In ............. type of test signal ,the signal will have high magnitude at one time .
In an Amplitude Modulator where the carrier and modulating signals are both sine waves, the frequency spectrum of the resulting AM signal is shown below. 12V 2V 2V kHz 803 808.6 a) Determine the equation of the modulating signal b) Calculate the bandwidth of the AM signal c) Calculate the effective current of the AM signal thru a 75-ohm load. d) Sketch the AM wave and label the maximum and minimum voltage of the signal.
What is the objectives of generate discrete signal by using sampling frequency?

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