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A 105-MHz carrier is to be frequency modulated by a 3-kHz tone. The maximum frequency deviation i...
A 1.5 MHz carrier frequency is amplitude-modulated by a 200 kHz sinewave audio signal. The bandwidth...
A 1.5 MHz carrier frequency is amplitude-modulated by a 200 kHz sinewave audio signal. The bandwidth would be A. 40 kHz. B. 405 kHz. C. 4,000 kHz. D. 400 kHz.
Communication systemProblems 1. A 25 MHz carrier is modulated by a 400 Hz audio sine...
Communication systemProblems A 25 MHz carrier is modulated by a 400 Hz audio sine wave If the carrier voltage 4 V and the maximum deviation is 10 KHz, write the equation of this modulated wave for FM. If the modulating frequency is now changed to 2 KHz, all else remaining constant, write the new equation for FM2. In an FM system, when the audio frequency (AF) is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 KHz....
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...
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?
2. A 3 KHz sinusoidal signal Phase Modulates a carrier at 245.3 MHz. The modulating tone...
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?
5. Consider the following message signal: m(t) -2 .3 10 Assume that the carrier frequency is f ar...
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...
A single-tone angle-modulated signal is given by ?(?) = 20cos[6 ∗ 108 ? + 40 sin(1000??)]...
A single-tone angle-modulated signal is given by ?(?) = 20cos[6 ∗ 108 ? + 40 sin(1000??)] Assume that the function is an FM signal. Determine (a) the unmodulated carrier frequency, (b) the modulating frequency, (c) the modulation index, and (d) the maximum frequency deviation. Express all frequencies in hertz. (e) Determine the average power dissipated in a 50Ω resistor
A Pulse Amplitude Modulated (PAM) signal is generated by naturally sampling a triangular wave of amplitude 3 volt peak and frequency 1 KHz as shown in Figure 4 by a pulse train of frequency 4 kHz wit...
A Pulse Amplitude Modulated (PAM) signal is generated by naturally sampling a triangular wave of amplitude 3 volt peak and frequency 1 KHz as shown in Figure 4 by a pulse train of frequency 4 kHz with a pulse width of 0.025 ms. Draw the sampled waveform Message signal 3V 1 ms tms 3V-- (9 Marks) Figure 4
A Pulse Amplitude Modulated (PAM) signal is generated by naturally sampling a triangular wave of amplitude 3 volt peak and frequency 1...
[5 Marks] uestion 1 A high frequency carrier is frequency modulated by a sinusoidal modulating frequency...
[5 Marks] uestion 1 A high frequency carrier is frequency modulated by a sinusoidal modulating frequency of 2 KHz, resulting in a frequency deviation of 7 Khz.Calculate the bandwidth of the modulated signal. a) [1 Mark] [1.Mark] 0.5 mark] 2.5 Marks] b) Explain how noise immunity is achieved in FM With aid of a neatly labelled illustration describe the Frequency Shift Keying c) Discuss the advantages and de merits of Frequency modulation d) [5 Marks] Question 2 n SSB transmitter...
5. Consider the following message signal: -2 Assume that the carrier frequency is f are kr 105, k...
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...
Consider an FM system where the modulated signal iss(t) = 10 cos2fct+ 2kfZt0m()dwhere the carrier frequency...
Consider an FM system where the modulated signal iss(t) = 10 cos2fct+ 2kfZt0m()dwhere the carrier frequency isfc= 100 MHz. The modulation signal ism(t) = 10 cos(2fmt),wherefm= 3 kHz
Communication systemProblems A 25 MHz carrier is modulated by a 400 Hz audio sine wave If the carrier voltage 4 V and the maximum deviation is 10 KHz, write the equation of this modulated wave for FM. If the modulating frequency is now changed to 2 KHz, all else remaining constant, write the new equation for FM2. In an FM system, when the audio frequency (AF) is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 KHz....
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?
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...
A Pulse Amplitude Modulated (PAM) signal is generated by naturally sampling a triangular wave of amplitude 3 volt peak and frequency 1 KHz as shown in Figure 4 by a pulse train of frequency 4 kHz with a pulse width of 0.025 ms. Draw the sampled waveform Message signal 3V 1 ms tms 3V-- (9 Marks) Figure 4
A Pulse Amplitude Modulated (PAM) signal is generated by naturally sampling a triangular wave of amplitude 3 volt peak and frequency 1...
[5 Marks] uestion 1 A high frequency carrier is frequency modulated by a sinusoidal modulating frequency of 2 KHz, resulting in a frequency deviation of 7 Khz.Calculate the bandwidth of the modulated signal. a) [1 Mark] [1.Mark] 0.5 mark] 2.5 Marks] b) Explain how noise immunity is achieved in FM With aid of a neatly labelled illustration describe the Frequency Shift Keying c) Discuss the advantages and de merits of Frequency modulation d) [5 Marks] Question 2 n SSB transmitter...
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...
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