Q24. A Carrier Signal givenDSBSignalВPFLPFby: Cosw.t is modulated2 Coswitbya message signalIH(wlgiven by:Cosumt + a Coszwnt3..3.by AMIDSB-sc3Wmmodulutor . If themodulated signal is appliedto the receiver shown in-Fiq Eind_thesignals att,2 and 3_and sketch. their. spectrumif:(a) w, = wWc -3Wm(b) w, = Wc%3D

Answered: Image /qna-images/answer/4730a01a-7fa9-4407-88f0-6a473c09d54f.jpg

A Currier Signal given DSB signal BPF LPF by: Cosw.t is modulated a message signal 2 Coswit by a given by: Cosumt + a Coszwnt 3. by AMIDSB-sc 3Wm modulutor .If the Cum modulated signal is applied to the receivershown in-Fig Eind_the signals_at-ponts 1,2.and 3_and sketch. their spectrum_if£i. Ca) w, = Wc -3Wm (b) w, = Wc

A Currier Signal given DSB signal BPF LPF by: Cosw.t is modulated a message signal 2 Coswit by a given by: Cosumt + a Coszwnt 3. by AMIDSB-sc 3Wm modulutor .If the Cum modulated signal is applied to the receivershown in-Fig Eind_the signals_at-ponts 1,2.and 3_and sketch. their spectrum_if£i. Ca) w, = Wc -3Wm (b) w, = Wc

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...

See similar textbooks

Similar questions

The output voltage of a transmitter is given by the following envelope wave form. This voltage is fed to a load (R₁ 102). What is the name of the modulator that can be used to generate DSB-AM, and draw the block diagram of this modulator? Then find: (a) The carrier frequency and the message frequency. (b) The double side band frequencies (USB and LSB). (c) The modulation index. (d) The carrier power and power in sidebands. (e) The total power. (f) Write the modulated wave equation at the output of the transmitter. Amplitude volts 20 ja see. + = -√/²₂2² I 20 volts
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
Q2The modulating x(t)=2cos2000nt+cos4000nt is applied to AM modulator of carrier=2cos106 t. Write expression for modulation equation and Sketch the spectral of modulator output (Single Side Bandspectrum)
q14- Direct sequence spread spectrum (DSSS) system spreads the baseband signal by ________ the baseband pulses with a pseudo noise sequence Select one: a. Addition b. None c. Dividing d. Subtracting
4. A modulated signal (AM) varies between the maximum values of +18V and -18V, if the carrier has an amplitude of 12V, a) What is the modulation index? b) What is the maximum magnitude of the modulator? c) Sketch the envelope of the modulated wave
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.
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
I need the answer as soon as possible
The power of operating frequency in AM station is 145 W, and there is 89% modulation depth. (assuming single side band suppressed carrier). What is the power of the side bands?
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.