1. Comment on the difference between AM, DSB-SC and SSB signals fromthe angle of bandwidth.2. Comment on the difference between AM, DSB-SC and SSB signals fromthe angle of transmission efficiency.PRODUL3. What is the function of R11 or R12?4. What is the function of VR₁? If turning the VR₁ arbitrarily, does the outputDSB-SC signal become the AM signal?5. Compare the results observed on the scope and comment on thedifference between AM and DSB-SC waveforms.

The bandwidth, transmission efficiency, and waveform properties of Amplitude Modulation (AM),…

Answered: 1. Comment on the difference between…

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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Question 3: For single sideband (SSB) modulation a) Write the time domain equation XSSB(t). b) Explain the generation process of single sideband (SSB) signal using phase shift method. c) Sketch the block diagram of single sideband (SSB) signal generation using phase shift method and using bandpass filter and its main disadvantages. d) Explain with drawing the demodulation process of SSB signal. e) How many single sideband (SSB) stations can be accommodated in a 180 KHz bandwidth if the highest modulating signal frequency fmax is 9 KHz? f) What are the main advantages and disadvantages of single sideband (SSB) modulation compared with ordinary amplitude modulation (AM).
What is not an advantage of SSB AM over DSB AM? a. saves power by not transmitting either the carrier and/or 1 of the sidebands b. it is more simple to generate and demodulate suppressed carrier AM than full carrier AM. c. reinforces the sideband since % Power of the sideband is increased d. reduces the bandwidth of the modulated signal
For single sideband (SSB) modulation a) Write the time domain equation XSSB(t).b) Explain the generation process of single sideband (SSB) signal using phase shift method.c) Sketch the block diagram of single sideband (SSB) signal generation using phase shift method and using bandpass filter and its main disadvantages.d) Explain with drawing the demodulation process of SSB signal.e) How many single sideband (SSB) stations can be accommodated in a 180 KHz bandwidth if the highest modulating signal frequency fmax is 9 KHz?f) What are the main advantages and disadvantages of single sideband (SSB) modulation compared with ordinary amplitude modulation (AM).
What is not an advantage of SSB AM over DSB AM? a. saves power by not transmitting either the carrier and/or 1 of the sidebands b. reduces the bandwidth of the modulated signal c. reinforces the sideband since %Power of the sideband is increased. d. it is more simple to generate and demodulated suppressed carrier AM than Full carrier AM.
1- The type of Frequency Modulation that its bandwidth similar to the bandwidth of DSB- AM signal is . (NBFM, WBFM) 2-If the highest frequency of the baseband signal is 8 kHz, the bandwidth of the SSB signal is a) 16 KHz b) 8KHz c)12 KHz 3- The type of Amplitude Modulation signal can be detected by the Envelope Dete is a)SSB b)VSB 4- Compared to FM, the bandwidth of AM is a)smaller b)equal c)greater 5- If the amplitude of the carrier signal is 7V, and the modulation index m=0.5, the ampli of the message signal is equal to a)3.5V b)14V c)DSB 02: An EM: c)7V 61.002
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Q 2 :J An audio signal given by 15sin(4000pi * t) + 20sin(8000pi * t) amplitude modulated(DSB-FC) a sinusoidal carrier wave 60sin(100, 000pi * t) a. Derive an expression for the modulated signal. b. Find the modulation index. c. Find the spectrum of the modulated signal. d. Sketch the spectrum of the modulated signal e. Which type of demodulation method you propose to reconstruct the audio at receiver. Why? to
Problem1: the figure shows multiple modulation schemes for the signal that is given by the dashed line sinusoidal function, the X-axis is the time axis is seconds and the Y-axis is the amplitude. Answer the following: 1. What is the value of the duty cycle in A? 2.What is the quantization noise in a modulator that uses a 4-bits register for the analog to digital conversion of the given sinusoidal signal?
(4) For AM min .BW.=2(fm+fm2)= 2(8+10) 36KH: For SSB min .BW. fm+ fm2 8+10 18KH: H.W Two low pass signals, each band limited 4KHZ, are to be time multiplexed into a single channel using PAM. Each signal is impulse sampled at a rate 10KHZ. The time multiplexed signal waveform is filtered by an ideal LPF before transmission. (a) What is minimum clock frequency of the system? (b) What is the minimum cut off frequency of the LPF? (c) In the receiver side, determine the minimum and maximum acceptable bandwidth of the LPF used in retrieving the analog signal? Ans. (a) 20KHZ (b) 1OKHZ (c) 4KHZ, 6KHZ.
Please answer question 1
1. The maximum frequency deviation of the carrier is ± 15 kHz and the maximum modulating frequency is 3 kHz, calculate for the modulation index. 2. Assume that the 60-dB bandwidth of a receiver is 12 kHz and the 6-dB bandwidth is 7 kHz. What is the shape factor of the circuit? 3. What is the bandwidth of a receiver with a quality factor of 50 and a resonance frequency of 540 kHz. 4. What is the maximum bandwidth of an FM signal with a deviation of 27 kHz and a maximum modulating signal of 4 kHz as determined by Carson's rule? 5. APM signal has a maximum allowed deviation of 17 kHz and an actual deviation of 8 kHz. What is the percentage modulation?
A 2000-Hz audio signal having an amplitude of 15 V amplitude modulates a 100- KHz carrier which has a peak value of 25 V when not modulated. Determine the modulation index, percent modulation, the upper and lower sideband frequencies, bandwidth of the wave, and write the AM equation.

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