= 10.5.2-6 Given m(t) = sin 2000лt, kf = 200,000л, and kp:(a) Estimate the bandwidths of FM (t) and 4PM (t).(b) Repeat part (a) if the message signal amplitude is doubled.(c) Repeat part (a) if the message signal frequency is doubled.(d) Comment on the sensitivity of FM and PM bandwidths to the spectrum of m(t).

Answered: = 10. 5.2-6 Given m(t) = sin 2000лt, kf…

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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2 (AM) A 10 V amplitude sinusoidal signal is used as a modulating signal to generate an AM signal with modulation index 0.8. What is the amplitude of the carrier? What is the power of the side bands? What is the efficiency of the modulated signal?
H.W A carrier signal given by 10cos27×108t volt is FM modulatedby single tone message 4cos2nx103t voltif the modulation constantis 1000 HzlVolt a) Compute max. frequency deviation and deviation ratio. b) Write the equation of modulatedwave. c) Sketch the spectrum. d) Calculate sidebands carrierand total power.
A carrier signal given by 10cos27™×108t volt is FM modulated by single tone message 4cos27t×103t volt if the modulation constant is 1000 Hz/Volt a) Compute max. frequency deviation and deviation ratio. b) Write the equation of modulated wave. c) Sketch the spectrum. d) Calculate sidebands carrier and total power.
6. For an FM modulator with modulation index m = 2, modulating signal v, (t) = Vm sin (2x2000t), and an unmodulated carrier v.(t)=8 sin(27800000r), a. Determine the number of sets of significant sidebands. 2 b. Determine their amplitudes. c. Draw the frequency spectrum showing the relative amplitudes of the side frequencies. It is given that Bessel coefficient corresponding to carrier component J(2) equals 0.22. Moreover, a side frequency is not considered significant unless it has amplitude equal to or greater than 1 % of the unmodulated carrier amplitude. Abbreviations: QPSK: Quaternary Phase Shift Keying BPSK: Binary Phase Shift Keying LED: Light Emitting Diode AM: Amplitude Modulation FM: Frequency Modulation
eee help can you help with the questions
A 75 MHz carrier having an amplitude of 50 V is modulated by a 3 kHz audio signal that has an amplitude of 20 V. a. Sketch the audio signal. b. Sketch the carrier. c. Construct the modulated wave. For a, b and c - label your diagram d. Determine the modulation factor. e. What frequencies would show up in a spectrum analysis of the modulated wave? f. Write trigonometric equations for the carrier and the modulating waves. Kindly answer a-f. Please have mercy. Thanks!
1) A 10-Vrms carrier signal with a frequency of 91.1 MHz is FM modulated by a 15 pts 8-Vrms, 4-KHz information signal that resulted to a deviation of 12 kHz. A) Determine the bandwidth using Carson's rule B) determine the bandwidth using Bessel Function C) determine the total power of the modulated wave
D Page view A Read aloud (b) Find a PM modulated signal when k, = 10 (c) Determine the modulation index and maximum frequency deviation of FM modulated signal. (d) Determine the modulation index and maximum phase deviation of PM modulated signal. Problem 2: The message signal m(t) = 10 cos(2000nt) angle modulates the carrier signal c(t) = cos(2nfct), where f. = 10 kHz. %D (a) Find an FM modulated signal when k, = 200 (b) Find a PM modulated signal when k, = 10 (c) Determine the modulation index and maximum frequency deviation of FM modulated signal. (d) Determine the modulation index and maximum phase deviation of PM modulated signal.
Q16. A 270kHz sinusoidal carrier of amplitude 5V is frequency modulated by a 4.5kHz sinusoidal information signal of amplitude 3V. Assume the modulation index as 2.41. i) Refer the Bessel function table B16 and Sketch the voltage spectrum for the above signal. ii) Calculate maximum frequency and maximum frequency deviation for the above FM signal iii) Identify whether the above equation corresponds to Narrowband or Wideband FM modulator. Table B16: Values of Bessel function Modulation Sideband index Carrier 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 0.00 1.00 0.25 0.98 0.12 0.5 0.94 0.24 0.03 1.0 0.77 0.44 0.11 0.02 1.5 0.51 0.56 0.23 0.06 0.01 2.0 0.22 0.58 0.35 0.13 0.03 2.41 0.52 0.43 0.20 0.06 0.02 2.5 -0.05 0.50 0.45 0.22 0.07 0.02 0.01 3.0 -0.26 0.34 0.49 0.31 0.13 0.04 0.01 4.0 -0.40 -0.07 0.36 0.43 0.28 0.13 0.05 0.02 5.0 -0.18 -0.33 0.05 0.36 0.39 0.26 0.13 0.05 0.02 5.53 -0.34 -0.13 0.25 0.40 0.32 0.19 0.09 0.03 0.01 6.0 0.15 -0.28 -0.24 0.11 0.36 0.36 0.25 0.13 0.06 0.02 7.0 0.30…
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Question 4. Select the statement that best describes the PM wave.a. Carrier phase angle changes represent the PM modulated signal, however, unlike FM and AM modulatedcarriers, it is not always easy to see these phase changes in the plot.b. The FM signal accurately represents the message.c. Although PM and FM techniques are classified as angular modulation techniques, they cannot be usedinterchangeably (i.e., modulated with FM and demodulated with PM, and visa versa).d. All statements are correct.
A sinusoidally modulated AM waveform is shown below: Determine: a) Peak amplitude of the upper and lower side frequencies. b) Peak amplitude of the unmodulated carrier. The modulation index. The carrier power and the power in the sidebands. The total transmitted power. 3 0 -3 -9 The transmission efficiency. The amplitude of the carrier which must be added or subtracted to attain a modulation index of 0.5. In AM modulation, the modulation index is kept < 100%, why?

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