Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Frequency Modulation
Frequency modulation is a method or process of encoding the data of a specific signal (analog or digital) by modulating the carrier wave frequency according to the frequency of the modulated signal. Modulated signals are nothing more than information or …
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Q2- Explain by equations and block diagram the direct method demodulation in NBFM Q3- Write the formula of the phase modulation (PM) when Ac=25 , Fc=10® Hz, Kp= 20 . If an information signal m(t) = cos(212000t) + 10sin(2n2000t) Q4- Drive a formula for NBFM by using Bessel function Q5- If an information signal X(t) = cos(2n700t) + 10cos(25000t). Write the formula of the frequency modulation (FM) when Ac=20 , Fc=10® Hz, Kf= n2000 Q6-) If NBFM signal passes through a frequency multiplier. With B < 0.5 and fc=200kHz. Let fm ranges from 50OHZ to 15kHz, and let the maximum frequency deviation Afat the output be 75kHz. Find the required frequency multiplication n and the maximum allowed frequency deviation at the input. Q7- If an angle modulated signal S(t) = 10[cos(210®t) + 15sin(2n10³t)]
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Transcribed Image Text:Q2- Explain by equations and block diagram the direct method demodulation in NBFM Q3- Write the formula of the phase modulation (PM) when Ac=25 , Fc=10® Hz, Kp= 20 . If an information signal m(t) = cos(212000t) + 10sin(2n2000t) Q4- Drive a formula for NBFM by using Bessel function Q5- If an information signal X(t) = cos(2n700t) + 10cos(25000t). Write the formula of the frequency modulation (FM) when Ac=20 , Fc=10® Hz, Kf= n2000 Q6-) If NBFM signal passes through a frequency multiplier. With B < 0.5 and fc=200kHz. Let fm ranges from 50OHZ to 15kHz, and let the maximum frequency deviation Afat the output be 75kHz. Find the required frequency multiplication n and the maximum allowed frequency deviation at the input. Q7- If an angle modulated signal S(t) = 10[cos(210®t) + 15sin(2n10³t)]
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