An FM modulator is tested using single-tone baseband signal with frequency of 50kHz and a sprectrum...
An FM modulator is tested using single-tone baseband signal with frequency of 50kHz and a sprectrum analyzer. Amplitude of the baseband signal is increased gradually from zero untill reaching 250mV, where the carrier of the FM signal is supressed. Calculate modulation constant of the modulator.
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An FM modulator is tested using
single-tone baseband signal with frequency of 50kHz and a sprectrum...
In frequency Modulation (FM), the instantaneous frequency of a sinusoidal carrier wave will be modified proportionally...
In frequency Modulation (FM), the instantaneous frequency of a
sinusoidal carrier wave will be modified proportionally to the
variation of amplitude of the message signal. Use Matlab to build
an FM modulation and demodulation process. The FM coefficient is
Kf=80, and the carrier frequency is 300Hz.
1. Generate a baseband signal as show below. Plot the baseband
signal in time domain and frequency domain. 2. Create an FM process and
plot the modulated signal in time and frequency domain.
-1...
In frequency Modulation (FM), the instantaneous frequency of a sinusoidal carrier wave will be mo...
In frequency Modulation (FM), the instantaneous frequency of a
sinusoidal carrier wave will be modified proportionally to the
variation of amplitude of the message signal. Use Matlab to build
an FM modulation and demodulation process. The FM coefficient is
Kf=80, and the carrier frequency is 300Hz.
1. Generate a baseband signal as show below. Plot the baseband
signal in time domain and frequency domain. 2. Create an FM process and
plot the modulated signal in time and frequency domain.
-1...
A baseband signal s(t) = 10 6 ( 3000 77t +30), is wideband FM modulated (tem(t))...
A baseband signal s(t) = 10 6 ( 3000 77t +30), is wideband FM modulated (tem(t)) with Carrier amplitude of 50 volt. The index of modulation is B = 4. (a) show the simplified equation of fift) (b) Determine wideband FM power using Bessel foc. table (C) Calculate Kf in the fu(t) equation
2. An FM modulator with modulation index m-2kradians/(voltxsec) has an input signal 2sin2π(1000)t). The carrier signal...
2. An FM modulator with modulation index m-2kradians/(voltxsec) has an input signal 2sin2π(1000)t). The carrier signal has amplitude Ac-50V a. Find the number of significant sideband pairs (level above 0.01Ac) b. Find the Carson's rule bandwidth BCarson.
Prob. 5 (a) Consider the FM signal with modulation index B 2 is passed through an ideal band-pass...
Prob. 5 (a) Consider the FM signal with modulation index B 2 is passed through an ideal band-pass filter (BPF) with mid-band frequency f and bandwidth 5f. where f is the carrier frequency and fmis the frequency of the baseband modulating signal (i) Sketch the spectrum of the BPF output. (ii) Determine the fraction of the power of the FM signal that is present at the output of the filter (b) Consider the FM signal given by фFM (t)-100 cos...
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 single tone message signal, m(t) = 2 cos(211 X 1000 t), (freq. is in Hz)...
A single tone message signal, m(t) = 2 cos(211 X 1000 t), (freq. is in Hz) is applied to an FM modulator with the following parameters: Amplitude of the Carrier = 10 (V), Carrier Frequency = 100 (kHz), Frequency sensitivity factor = kx = 103 (Hz/Volt). The modulated signal s(t) is passed through a bandpass filter centered at 102 (kHz) with a bandwidth of 3(kHz), and the output signal sf(t) is obtained. (a) Express the output of the filter, sf(t)...
Design a narrow band FM modulator and demodulator units based on the following rules. By using...
Design a narrow band FM modulator and demodulator units based on the following rules. By using your design, assume that you are planning to broadcast music and listen to it. Design Principles 1. Bandwidth of the message signal is 4kHz. II. Carrier frequency is 50MHz III. Allowable maximum frequency deviation in the system is 50kHz. a) Determine the values of elements (if any; R. C, and L) used in the circuits. b) In case of noise (N. = 2x10-8W.Hz-1) added...
This problem is on the basics of FM using single tone message. As we that certain...
This problem is on the basics of FM using single tone message. As we that certain message tone is modulated by Frequency Modulator is written as s(t)r'. 4 Cos [ 2 π 2000 t + 4 Sin (2x 10001 (a) Caleulate the maximum frequency deviation dfin (Hz](3) Hint: identify the value of B and use relation with freq. deviation) (b) Is this Wideband FM or Narrow band FM? (2) (c) Calculate the required transmission bandwidth Brl㎐l using Carson's rule (2)...
4.9-3 Design an Armstrong indirect FM modulator in block diagram to generate an FM signal with...
4.9-3 Design an Armstrong indirect FM modulator in block diagram to generate an FM signal with carrier 96.3 MHz and Af = 20.48 kHz. A narrowband FM generator with fe = 150 kHz and Af = 10 Hz is available. Only a limited number of frequency doublers are available as frequency multipliers. In addition, an oscillator with adjustable frequency from 13 to 14 MHz is also available for mixing, along with bandpass filters of any specification.
In frequency Modulation (FM), the instantaneous frequency of a
sinusoidal carrier wave will be modified proportionally to the
variation of amplitude of the message signal. Use Matlab to build
an FM modulation and demodulation process. The FM coefficient is
Kf=80, and the carrier frequency is 300Hz.
1. Generate a baseband signal as show below. Plot the baseband
signal in time domain and frequency domain. 2. Create an FM process and
plot the modulated signal in time and frequency domain.
-1...
In frequency Modulation (FM), the instantaneous frequency of a
sinusoidal carrier wave will be modified proportionally to the
variation of amplitude of the message signal. Use Matlab to build
an FM modulation and demodulation process. The FM coefficient is
Kf=80, and the carrier frequency is 300Hz.
1. Generate a baseband signal as show below. Plot the baseband
signal in time domain and frequency domain. 2. Create an FM process and
plot the modulated signal in time and frequency domain.
-1...
A baseband signal s(t) = 10 6 ( 3000 77t +30), is wideband FM modulated (tem(t)) with Carrier amplitude of 50 volt. The index of modulation is B = 4. (a) show the simplified equation of fift) (b) Determine wideband FM power using Bessel foc. table (C) Calculate Kf in the fu(t) equation
2. An FM modulator with modulation index m-2kradians/(voltxsec) has an input signal 2sin2π(1000)t). The carrier signal has amplitude Ac-50V a. Find the number of significant sideband pairs (level above 0.01Ac) b. Find the Carson's rule bandwidth BCarson.
Prob. 5 (a) Consider the FM signal with modulation index B 2 is passed through an ideal band-pass filter (BPF) with mid-band frequency f and bandwidth 5f. where f is the carrier frequency and fmis the frequency of the baseband modulating signal (i) Sketch the spectrum of the BPF output. (ii) Determine the fraction of the power of the FM signal that is present at the output of the filter (b) Consider the FM signal given by фFM (t)-100 cos...
A single tone message signal, m(t) = 2 cos(211 X 1000 t), (freq. is in Hz) is applied to an FM modulator with the following parameters: Amplitude of the Carrier = 10 (V), Carrier Frequency = 100 (kHz), Frequency sensitivity factor = kx = 103 (Hz/Volt). The modulated signal s(t) is passed through a bandpass filter centered at 102 (kHz) with a bandwidth of 3(kHz), and the output signal sf(t) is obtained. (a) Express the output of the filter, sf(t)...
This problem is on the basics of FM using single tone message. As we that certain message tone is modulated by Frequency Modulator is written as s(t)r'. 4 Cos [ 2 π 2000 t + 4 Sin (2x 10001 (a) Caleulate the maximum frequency deviation dfin (Hz](3) Hint: identify the value of B and use relation with freq. deviation) (b) Is this Wideband FM or Narrow band FM? (2) (c) Calculate the required transmission bandwidth Brl㎐l using Carson's rule (2)...
4.9-3 Design an Armstrong indirect FM modulator in block diagram to generate an FM signal with carrier 96.3 MHz and Af = 20.48 kHz. A narrowband FM generator with fe = 150 kHz and Af = 10 Hz is available. Only a limited number of frequency doublers are available as frequency multipliers. In addition, an oscillator with adjustable frequency from 13 to 14 MHz is also available for mixing, along with bandpass filters of any specification.
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