Problem 1:The message signal as below is used to angle modulate a carrier c(t) = 100cos4000лt.(a)(b)(c)(d)Determine the peak-frequency deviation with k=2 using FM.Determine the peak-phase deviation with k=1 using PM.If k=kp=5, determine the maximum instantaneous frequency in FM and PM respectively.Determine the phase o(t) of the FM modulated signal with k+=2.m(t)30246t-3

i have solved all the parts from a to d.in brief i have solved.A zero was left in last…

Answered: Problem 1: The message signal as below…

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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A carrier signal given by 10cos27Tx108t volt is FM modulated by single tone message 4cos2Tx103t 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
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%VE 11₁. 1₁. H+ 1. Find the carrier frequency swing of the FM signal. 2. Determine the highest and lowest carrier frequencies. 3. Calculate the modulation index for the wave? 1- An FM modulator has a carrier frequency of 200 MHz, is frequency modulated by a sine wave signal at a frequency of (fm= 15 kHz). The resultant FM signal has a frequency deviation of (f= 45 kHz). 4. Sketch, approximately to scale, the magnitude spectrum Show all frequencies of interest. 5. Calculate the bandwidth occupied by this FM signal? - 0 ۱۱:۳۸ Untitled ||| 2- An FM modulator uses a carrier frequency of 1000 Hz and a frequency sensitivity constant Kf = 12.5 Hz/volt. The message is m(t) = 4 cos 2710 t. O the modulator output. 1. What is the modulation index? 2. Sketch the magnitude spectrum of the modulator output. Show all frequencies. 3. Is this narrow band FM? Why? •N خ 11:+V ·K मं
A 10Vp carrier signal is amplitude modulated by two different frequencies 5 KHz and 10 KHz with amplitude of 4Vp and 7.5Vp respectively using an DSBFC. If the system is connected to the 100Q antenna, (a) what is the modulated carrier power and AM wave total power? From DSBFC, different transmitters with different modulation schemes were used to evaluate the performance in terms of power and bandwidth and compare to conventional AM. (b) Complete the table below and provide your solution. Use 3 decimal places. MODULATED CARRIER AM WAVE TOTAL BANDWIDTH TYPE OF % POWER SAVED POWER (mW) POWER (mW) (kHz) MODULATION SB-FC 500mW (b4) (b5) (b6)
In an AM modulator the message signal is m(t) = coswmit+2coswm2t, and the carrier wave is c(t) = Acosw.t. The modulation index is m = 0.5. a) Determine the amplitude of the carrier wave A. b) Determine the expression of the modulated signal with the AM modulation scheme. c) Determine the expression of the frequency spectrum of the AM modulated signal and then plot the frequency spectrum.
Question RF carrier 10 kV at 1 MHz is a amplitude modulated and modulation index is 0.6. peak cvoltage of the signal is
Q7. Figure Q7 shows a modulated waveform v(t) in millivolts as a function of time t in nanoseconds. 1.5 1.0 0.5 - 0.0 -0.5 -1.0 -1.5 100 200 300 400 500 t/ns Figure Q7: Modulated waveform (a) Describe the modulation scheme. (b) What are the values of the carrier frequency and the modulation frequency? (c) What is the value of the modulation index? (d) What is the transmission efficiency (ratio of modulated to total power) in this example? (e) Sketch the spectrum of this modulated waveform indicating the relative magnitudes of the various spectral components. (f) Demodulation of this type of waveform is usually performed with an envelope detector. Describe the function of an envelope detector and sketch an example circuit. (g) What requirements on the values of the components of your envelope detector circuit are there for the successful demodulation of the given waveform? (h) Keeping the same carrier wave, the modulating wave in this example is substituted with a square wave of 50%…
B. FM modulated signal is transmitted over a noisy transmitter modulator, with the power spectral density of noise being as shown in Figure 1 (W is the information frequency with 1 KHz, Sn (f) is the power spectral density for the noise). The FM equation and transmitter is shown in figure 2. 1. Derive the FM modulated signal for narrowband modulation 2. Determine the power of the narrowband FM modulation 3. Determine the signal to noise ratio for the narrowband FM modulation s4) - A, co 2f1 + 2n, mr dr 2 mk, Baseband signal Narrowband Integrator phase modulator Frequency maltiplier FM signal N4. Crystal- contralled oscillator Figure 1 Figure 2
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?
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.
c) An audio signal 10sin 27(2000t) amplitude modulates a carrier 20sin 2π(200000t). i) ii) iii) d) How Sketch the amplitude modulated wave. Determine the modulation index? What is the frequency content of the modulated wave? AM broadenet stations. nodated in a 100 KH

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