7)Let r(t) = A cos(2000zt) + Am sin(3000xt) + Am sin(1000rt). Then, r(t) will be anarrow band FM ifAa.AmAb.<< 1Amс. Ат <<1d. Can never be a narrow band FM

FM will be Narrow band FM uf modulation index is less than 1

Answered: Let r(t) = Acos(2000zt) + Am…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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3. Calculate the power of the upper and lower sideband of the modulated signal if the maximum and minimum amplitude is 110 and 70 V respectively. For R=1.
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If the carrier signal is Ve (t) = Ve Sin (Wst). And the information signal is used to generate AM wave Vm (t) = Vm Sin (t), the AM Bandwidth is equal to 12 KHz, modulation index m = 0.5 and the spectrum frequency for AM is shown figure: 6 -100-6fm -100 -100+6fm 100-6fm 100 100+6fm KHZ | 1- determine Wc. Wm, fm. fe 2- draw the AM wave in time domain 3. determine Vm. Vs 4-determine the power at carrier of the antenna resistance one ohm (1 2) 5- Write the AM equation with all values.
A sinusoidal haseband signal with a frequency of 5kHz is transmitted using DSB-LC. The received signal is R = 10[1 +0.2 cos(2m5000r)] cos(2r10°r) Volts. The shown system is used as a receiver. The BPF is ideal and its center frequency is 1.002MHz and bandwidth 7kHz. The demodulator has input-output characteristics (V, = 4V/). The LPF is ideal with an adjustable cutoff frequency. Determine the output signal waveform of this system. You need to specify the cutoff frequency of the LPF to obtain the original message back at Y. R BPF Demodulator B (B-4A) LPF DC removal
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4. An FM signal has a deviation of 10 kHz and is modulated by a sine wave with a frequency of 5kHz. The carrier frequency is 150MHz and the signal has a total power of 12.5W, operating into an impedance of 500. c. What is the voltage level of the second sideband below the carrier frequency? d. What is the carson's rule bandwidth?

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Let r(t) = Acos(2000zt) + Am sin(3000xt) + Am sin(1000zt). Then, r(t) will be a narrow band FM if a. >>1 Am b. Am c. Am << 1 d. Can never be a narrow band FM