Solve Q11 onlyA message signal m(t), shown below, is phase modulated on a carrier 100 cos(27106t),with a phase-deviation constant k, equal to 3 rad/V.10101520253011)Maximum instantaneous frequency for Q10 is:3a. 106 +Hz273b. 106 +2 H zc. 106 +3 H zd. None

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Answered: Solve Q11 only 10) A message signal…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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If the carrier signal is given as c(t)=5cos10000t, and the modulating signal is given as m(t)=4ej2πtthen the power (in watt) of the modulated DSB-SC signal is: Group of answer choices 16 25 200 100 12.5
The EIRP of a transmitting station is specified as 33.2 W in a given direction. Calculate its ERP in the same direction. O a. 31.06 dBm. O b. 47.35 dBm. O C. 43.07 dBm. O d. 35.34 dBm.
↓ 11:07 AM 1 72¹ Why multiple access important ?for communication To share bandwidth To share spectrum To decrease noise To share data voice messages work in the 700 high frequency of 10 kHz and low frequency of 2 kHz and 10 video signals of 5.6 MHz are to be combined for 16-bit PCM system: Find sampling frequency of voice and video ? signals fs1-12 k; fs2=11.2 M O fs1=10 k; fs2=11.2 M fs1-8 k; fs2=11.2 M fs1-16 k; fs2=11.2 M fs1=6 k; fs2=11.2 M fs1=4 k; fs2=11.2 M
b) P, = Pt- Pe= 100 – 16 = 84 watt c) P2 = 2AJ (ß) = 2 x 100 x 3(3.8) = 34 watt %3D AC H.W FC A carrier signal given by 10 cos 2n x 10°t volt is FM modulated by single to Hz message 4 cos 2n x 103t volt if the modulation constant is 1000 Am a) Compute max. frequency deviation and deviation ratio.A. F Volt Fm b) Write the equation of modulated wave. Ac c) Sketch the spectrum. d) Calculate sidebands carrier and total power. 42
Problem 1 A sinusoidally modulated ordinary AM waveform is shown below. 9 3 0 t (a) Determine the modulation index. (b) Calculate the transmission efficiency. (c) Determine the amplitude of the carrier which must be added to attain a modulation index of 0.3.
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A conventional amplitude modulator (AM), where m(t) is the analogue message, VDC is an offset voltage and c(t) is the carrier signal. Let m(t) = V cos(210¹t), and the carrier frequency is fc = 105Hz. If the total transmitted power is Pr-52.75 Watt and carrier power P-40.5 Watt. Answer the following questions: 3) Write the mathematical equation of modulated signal VAM (t) for the above values. 4) Sketch VAM(t) at the output of the modulator in the time domain. 5) Draw the single side frequency spectrum of the signal VAM (t). 6) Justify the reasons of using modulation to transmit m(t) with frequency 10KHZ. (1-2)
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Question 1 Consider a Frequency Modulation (FM) modulator with the following parameters: Modulation index, m=1.5 Modulating signal, Vm (t) = Vm sin(271000t) V Unmodulated carrier signal, vc(t) = 20 sin (2500kt) V Using the Bessel Table in Appendix I, answer the following questions: (1) Determine the number of sets of the significant side frequencies. (ii) Determine the sideband amplitudes. (iii) Draw the frequency spectrum. (iv) (v) (vi) (vii) Determine the bandwidth. Determine the bandwidth if the amplitude of the modulating signal increases by a factor of 2.65. Assume load resistance RL =500, determine the unmodulated camic power The total power in the angle modulated wave.
hint : the referance Which should be used to solve this question (Satellite Communications)by Timothy Pratt

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Solve Q11 only 10) A message signal m(t), shown below, is phase modulated on a carrier 100 cos(2#10®t), with a phase-deviation constant k, equal to 3 rad/V. 10 10 15 20 25 30 11) Maximum instantaneous frequency for Q10 is: 3 a. 106 + Hz 27 3 b. 106 +2 Hz с. 106 + 3 Нz d. None