A modulation index, m is the ratio between the amplitudes of modulating signal and the carrier. An equation of Analog Modulation (AM) signal is given as: v(t) = E. (1 + m sin wmt) sin wet i) Write the mathematical equations for m based on above equation. ii) Sketch the waveforms for the following values of m listed below and describe the effect of m to each waveform. a. m = 0 b. m = 0,5 C. m = 1 d. m = 2

A modulation index, m is the ratio between the amplitudes of modulating signal and the carrier. An equation of Analog Modulation (AM) signal is given as: v(t) = E. (1 + m sin wmt) sin wet i) Write the mathematical equations for m based on above equation. ii) Sketch the waveforms for the following values of m listed below and describe the effect of m to each waveform. a. m = 0 b. m = 0,5 C. m = 1 d. m = 2

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

Q: Explain in details with all figures and equations the modulation index of Amplitude Modulation (AM) and then show the AM wave when the modulation index > 1 , modulation index < 1 and modulation index =1.choose the best case and why.1-draw the three cases.2-write an example.
2. Plot the transfer function, and clearly indicate the on/off conditions of each diode, the slope of the line, and the voltages of turning points in each operating region for the following circuits. Assuming the constant-voltage model (VD,on = 0.8 V) is used to determine the DC level. Also, Plot the output waveform in time-domain if the input signal is as shown below with the amplitude and other important values labeled in the figure. (a) (b) Vin R= 500 D₁ V₁= 2.5 V D₂ A V₂ 1.6 V D₁ 2R 2X4 2R D₂ 3R out Vout Vin Vin 10 mv 1-AAAA-3.4 V >t 5 V
Q2: Assume a sinusoidal signal with a frequency of 3.5 kHz and maximum amplitude of 1v. Then this signal is applied to LDM with a bit rate of 25kbps. Find the appropriate value of step size for this modulation.
Problem 1 The Figure below shows a screen shot of a signal recoded by an oscilloscope. a) What are the average and fundamental frequency for the given signal? b) If the signal is sampled with a sampling frequency of 10 Hz, sketch the sampled signal on the same chart. c) Find the average value of the sampled signal. d) Use zero-order hold to convert the sampled signal to a continuous one and sketch your result on the same chart 2. 0.5 0.4 Time (s) 0.1 0.2 0.3 0.6 0.7 0.8 0.9
If the frequency that is injected into an AM modulator is 100Mhz and it is combined with another injected signal of 10Khz, we can say that the combination is:
9) An analog signal contains frequencies up to 10 kHz. (a) What range of sampling from its samples? frequencies allows exact reconstruction of this signal om t (b) Suppose that we ample this signal with a sampling frequency fs = 8 kHz. Examine what happens to the frequency f₁ = 5 kHz. (c) Repeat part (b) for a frequency f2 = 9 kHz.
Tigeve Discussion:- Q1 / Draw block diagram for AM modulation? Q2 / Draw block diagram for AM demodulation? Q3 / What are the work of diode in AM demodulation circuit? Q4 / What are the methods that used to demodulate AM signals? Q5 / Can use HPF instead of LPF in AM demodulation circuit? Why?
Example: Suppose that an analog signal is given as x(t) = Scos (27 x 103t) and is sampled at the rate 8kHz. Sketch the spectrum for the original signal and the sampled signal from 0 to 20kHz. I need the solution step by step and clear line please
Consider the following plots of time-domain and frequency-domain signals. Label the axes of the five plots. For example, plot B should be labeled as amplitude vs. time. Characterize each plot as either a time-domain or a frequency-domain signal. Describe the mathematical relationships among the plots. For example, how could you arrive at plot A from plots D and E?
Explain Frequency Modulation (FM), Amplitude Modulation and Phase Modulation (PM) signal in time domain, frequency domain. Answer in paragraph form
Q2: An audio signal given by 15 sin(4000nt) + 20 sin(8000nt) amplitude modulated(DSB-FC) a sinusoidal carrier wave 60 sin(100,000nt) 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?
How are: a) FM signal is generated b) PM signal is generated c) Angle Modulated signal is demodulated