Homework Answers
We know the standard equation of FM signal. It is represented in
equation 2. The given FM is written as equation 1. On comparing
both the equation we can find the value of Modulation index and
Modulation frequency. The cosine and sinusoid can be interchanged.
By using the Carson rule we find the bandwidth of FM
signal.
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Determine the approximate bandwidth, in Hz, of the FM signal 10 sin ( 10000t + 23...
Find the maximum bandwidth of an FM signal with a deviation of 50 kHz and a...
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
if the spectrum of an FM signal has a bandwidth of 220khz, what is the modulation...
if the spectrum of an FM signal has a bandwidth of 220khz, what is the modulation index if there are 10 pairs of spectral lines
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...
Consider an FM system where the modulated signal is
Consider an FM system where the modulated signal is s(t) = 10 cos (2πfct + 2πkf∫0t m(τ)dτ)where the carrier frequency is fc = 100 MHz. The modulation signal is m(t) = 10 cos(2πfmt), where fm = 3 kHz. (a) Assuming that kf = 10, what is the approximate bandwidth of s(t)? (b) Find the instantaneous frequency fi(t) of s(t). What are the maximum and minimum values of fi(t) ?
A bandpass signal with carrier frequency 1482 Hz is a bandwidth of 154 Hz. This signal is mixed w...
A bandpass signal with carrier frequency 1482 Hz is a bandwidth of 154 Hz. This signal is mixed with a local oscillator output at the frequency 810 Hz, and then sampled with an ideal sampler. We is the minimum time between samples that will allow the full signal output by the mixer to be reconstructed from its samples using an appropriate low pass filter? State your answer in milliseconds to two decimal places.
A bandpass signal with carrier frequency 1482...
a. For the wideband FM signal given by SFM(t) = cos[2πfct+ 3sin2π25t]
a. For the wideband FM signal given by SFM(t) = cos[2πfct+ 3sin2π25t], draw only positive side of the spectrum, (from n=-5 to n=+5). Assume the carrier frequency (fc) of 1 KHz. Hint: First calculate β by comparing the signal with SFM(t) equation b. The FM signal of part (a) is passed through a bandpass filter centered at 1 KHz with a bandwidth of 210 Hz, as shown below. Draw the new spectrum and calculate the bandwidth and power of the filtered FM...
there is no img... Que 3 A bandpass signal g(t) of bandwidth B Hz centered at...
there is no img...
Que 3 A bandpass signal g(t) of bandwidth B Hz centered at f 104 Hz is passed through the RC filter in Example 3.16 (Fig. 3.26a) with RC = 10-3. If over the passband, the variation of less than 2% in amplitude response and less than 1 % in time delay is considered to be distortionless transmission, determine what is the maximum allowable value of bandwidth B in order for g(t) to be transmitted through this...
Consider a narrow-band FM signal approximately defined by )A.coset-B,sin)sinff) 21, sm27,t)sin a) Determine the envelope of this modulated signal b) What is the ratio of the maximum to the minimum va...
Consider a narrow-band FM signal approximately defined by )A.coset-B,sin)sinff) 21, sm27,t)sin a) Determine the envelope of this modulated signal b) What is the ratio of the maximum to the minimum value of this envelope? Plot this ratio versus B, assuming Osps03. c) Determine the average power of the narrow-band FM signal, expressed as a percentage of the average power of the unmodulated carrier wave. Plot this result versus β, assuming 0 β 03.
Consider a narrow-band FM signal approximately defined...
The frequency bandwidth of the signal 4. cos 1000x1+ sin 2000 is: L The frequency bandwidth...
The frequency bandwidth of the signal 4. cos 1000x1+ sin 2000 is: L The frequency bandwidth of the signal cos 2000x + cos 1000
Communication systems d) The angle modulated signal is presented as = 1008 (2*10*4 +0.5sin(10*x+)) 1. Find...
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)...
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 bandpass signal with carrier frequency 1482 Hz is a bandwidth of 154 Hz. This signal is mixed with a local oscillator output at the frequency 810 Hz, and then sampled with an ideal sampler. We is the minimum time between samples that will allow the full signal output by the mixer to be reconstructed from its samples using an appropriate low pass filter? State your answer in milliseconds to two decimal places.
A bandpass signal with carrier frequency 1482...
there is no img...
Que 3 A bandpass signal g(t) of bandwidth B Hz centered at f 104 Hz is passed through the RC filter in Example 3.16 (Fig. 3.26a) with RC = 10-3. If over the passband, the variation of less than 2% in amplitude response and less than 1 % in time delay is considered to be distortionless transmission, determine what is the maximum allowable value of bandwidth B in order for g(t) to be transmitted through this...
Consider a narrow-band FM signal approximately defined by )A.coset-B,sin)sinff) 21, sm27,t)sin a) Determine the envelope of this modulated signal b) What is the ratio of the maximum to the minimum value of this envelope? Plot this ratio versus B, assuming Osps03. c) Determine the average power of the narrow-band FM signal, expressed as a percentage of the average power of the unmodulated carrier wave. Plot this result versus β, assuming 0 β 03.
Consider a narrow-band FM signal approximately defined...
The frequency bandwidth of the signal 4. cos 1000x1+ sin 2000 is: L The frequency bandwidth of the signal cos 2000x + cos 1000
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)...
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