14. Given a sinusoidal modulating signal with frequencies f," 10 kHz and a carrier signal of...
In an FM system the carrier frequency is 1MHz, the modulating signal at 10 kHz, the maximum deviation is 150 kHz. What is frequency modulation fm?
2. A 3 KHz sinusoidal signal Phase Modulates a carrier at 245.3 MHz. The modulating tone has an amplitude of 4 volts and the phase sensitivity of the modulator is 0.5 radians/volt. a. (15 points) Evaluate the required transmission bandwidth using Carson's Rule. b. (15 points) If the resulting PM signal is passed through an IBPF with bandwidth given by Carson's Rule (plus a few Hz), what percentage of the signal power is lost?
12. An FM signal has a deviation of 3 kHz and a modulating frequency of 1 kHz. Its total power Pris 5 W, developed across a 50 2 resistive load. The carrier frequency is 160 MHz (a) Calculate the RMS signal voltage VI (b) Calculate the RMS voltage at the carrier frequency and each of the first three sets of sidebands. (c) For the first three sideband pairs, calculate the frequency of each sideband. (d) Calculate the power at the...
5. Consider the following message signal: m(t) -2 .3 10 Assume that the carrier frequency is f are kf = 105, kp-25 respectively. 108 Hz, and frequency and phase deviation constants Find the maximum and minimum frequency deviation for FM, and sketch the FM wave for a duration of 103 seconds shown in the above figure (5 points). a. b. Find the maximum and minimum frequency deviation for PM, sketch the PM wave for a duration of 103 seconds shown...
5. Consider the following message signal: -2 Assume that the carrier frequency is f are kr 105, kp 25 respectively. 108 Hz, and frequency and phase deviation constants Find the maximum and minimum frequency deviation for FM, and sketch the FM wave for a duration of 103 seconds shown in the above figure (5 points). a. b. Find the maximum and minimum frequency deviation for PM, sketch the PM wave for a duration of 103 seconds shown in the above...
An FM signal has an intelligence frequency of 5 KHz, a maximum deviation of 30 KHz, and a carrier frequency of 162.4 MHz. Use the Bessel Function chart to answer the following: a) Its bandwidth b) How many frequency components are there in the output spectrum? c) What is the frequency of the highest frequency component within its bandwidth?
Find the maximum bandwidth of an FM signal with a deviation of 50 kHz and a maximum modulating signal of 10 kHz by: a. Using Bessel table b. Using Carson Rule
Communication systems
d) The angle modulated signal is presented as = 1008 (2*10*4 +0.5sin(10*x+)) 1. Find and determine the frequency modulated signal x(C) with k, = 5. (5 marks) II. Calculate and find out the message signal m(t). (5 marks) e) A 40 MHz carrier is frequency-modulated by a sinusoidal signal with mascimum frequency deviation of 500 KHz. I. Find and calculate the approximate bandwidth of the FM signal the frequency of the message signal is 1 kHz. (5 marks)...
QUESTION 2 (25 MARKS) In FM transmission circuits, explain the purpose and function of: a. i. Pre-emphasis and de-emphasis circuits. (C01: P01 - 3 Marks) ii. Limiter circuit (C01: P01 - 3 Marks) b. A sinusoidal carrier wave of frequency fe = 110 MHz is modulated by a modulating signal m(t). The characteristics of the modulating signal is illustrated in Figure Q2(b) and the Frequency Deviation Constant of the FM Modulator, ks = 10Hz/volt. Determine the minimum bandwidth required for...
QUESTION 2 (25 MARKS) In FM transmission circuits, explain the purpose and function of: a. i. Pre-emphasis and de-emphasis circuits. (CO1: P01 - 3 Marks) ii. Limiter circuit. (C01: P01 - 3 Marks) b. A sinusoidal carrier wave of frequency ſe = 110 MHz is modulated by a modulating signal m(t). The characteristics of the modulating signal is illustrated in Figure 02(b) and the Frequency Deviation Constant of the FM Modulator, ky = 107 Hz/volt. Determine the minimum bandwidth required...