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3.8 An AM modulator operates with the message signal m(t)-9 cos(20π)--8 cos(60π) m(t) = 9 cos(20π)...
4. (20%) An AM modulator operates with the message signal m(t) - 9 cos(207t)-8 cos(60!). The unmodulated carrier is...
4. (20%) An AM modulator operates with the message signal m(t) - 9 cos(207t)-8 cos(60!). The unmodulated carrier is given by 110 cos 200r), and the system operates with an index of 0.8. (10%) (a) Given that the minimum value ofm(t) is-12.9, write the equation for m, (t). and determine the power of m,(r) (i.e.. m,())) (b) Determine the efficiency of the modulator 5%) (500) (c) Sketch the double-sided spectrum of the modulator output AM signal.
4. (20%) An AM...
3. a. For the message signal m(t)-2sgnit) and unmodulated carrier cos(u,ti, draw the output of phase modulator with m(t) (n/4) cos(ω-') - For the message signal m(t)--2sgn(t) and unmodulated c...
3. a. For the message signal m(t)-2sgnit) and unmodulated carrier cos(u,ti, draw the output of phase modulator with m(t) (n/4) cos(ω-') - For the message signal m(t)--2sgn(t) and unmodulated carrier cos(w,t) shown above where -20m, draw the output of frequency modulator with m(t) (k-10n)
3. a. For the message signal m(t)-2sgnit) and unmodulated carrier cos(u,ti, draw the output of phase modulator with m(t) (n/4) cos(ω-') - For the message signal m(t)--2sgn(t) and unmodulated carrier cos(w,t) shown above where -20m, draw...
got 50 min sgn(t) and unmodulated carrier cos(wct), draw the output of unmodulate 3. a. For the message signal m(t)-2sgn(t) phase modulator with m(t) (k/4) cos(o t b. For the message signal m(t)--...
got 50 min
sgn(t) and unmodulated carrier cos(wct), draw the output of unmodulate 3. a. For the message signal m(t)-2sgn(t) phase modulator with m(t) (k/4) cos(o t b. For the message signal m(t)--2sgn(t) and unmodulated carrier cos(wet ) shown above where ue-207, draw the output of frequency modulator with m(t) (k-10n)
sgn(t) and unmodulated carrier cos(wct), draw the output of unmodulate 3. a. For the message signal m(t)-2sgn(t) phase modulator with m(t) (k/4) cos(o t b. For the message signal...
(14%) 6. Consider an FM modulator with output )-100 cos(2(1000)r+(0) The modulator operates with fa = 8 and has the input message signal The modulator is followed by a bandpass filter with a...
(14%) 6. Consider an FM modulator with output )-100 cos(2(1000)r+(0) The modulator operates with fa = 8 and has the input message signal The modulator is followed by a bandpass filter with a a bandwidth of 56HZ, as shown in the following figure. Determine the power ratio and the power at the fiter oput center frequency of 1000HZ and Bandpass filter PM Output Center 1000 Hz Bandwidth 56 Hz mt-5 cos 2(8)r modulator -1000 Hz (a) FM system 39.1 39.1365...
Prob 5 (continued): with message signal m(t): m(t) 10 cos(20mt) + 6 sin(60rt) (8 points) Write...
Prob 5 (continued): with message signal m(t): m(t) 10 cos(20mt) + 6 sin(60rt) (8 points) Write an equation (do not spend time simplifying! can be in terms of both sin0 and cos0 functions) for the LSB-SSB signal if the message signal is modulated by carrier at 100 Hz: e. (6 points) Sketch the double-sided magnitude spectrum for the LSB-SSB signal (you do not necessarily need the equation from part (d) to draw this, you can go off your knowledge of...
3.14 The output signal from an AM modulator is 11 (1)-5 cos l 800π t +...
3.14 The output signal from an AM modulator is 11 (1)-5 cos l 800π t + 20 cos 2000π t + 5 cos 2200 π . 1. Determine the modulating signal m() and the carrier c (t) 2. Determine the modulation index. 3. Determine the ratio of the power in the sidebands to the power in the carrier.
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos...
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos(wt+0), where m(t) is a signal band-limited to B Hz. The following figure shows a DSB- SC AM modulator available in the stockroom. The carrier generator available generates not cos(wct), but cos (wct). Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. 3. What kind of filter is required...
5. A message signal m(t) = cos(2000πt)+2 cos(4000πt) modulates the carrier c(t) = 100 cos(2πfct), where...
5. A message signal m(t) = cos(2000πt)+2 cos(4000πt) modulates the carrier c(t) = 100 cos(2πfct), where fc = 1 MHz to produce the DSB signal m(t)c(t). ( 1. Determine the expression for the upper-sideband (USB) signal. 2. Determine and sketch the spectrum of the USB signal.
A message m(t) sinc2 (M) cos (2π9t) is used to modulate a carrier to produce an...
A message m(t) sinc2 (M) cos (2π9t) is used to modulate a carrier to produce an LSB-AM signal. (a) Find and sketch the spectrum of m(t); determine and sketch the spectrum of mh (t) graphically; determine m,(t) by finding the inverse Fourier transform of the previous spectrum; determine the LSB-AM message signal expression. (b) Sketch the spectrum of the DSB-SC signal 2m(t) cos 2mfet; remove the upper sideband and sketch the resulting LSB spectrum; determine the LSB-AM message signal expression...
TO 2, the signal m(t) 20 sinc ( 400't) is an input to a ring modulator...
TO 2, the signal m(t) 20 sinc ( 400't) is an input to a ring modulator with carrier frequency 10 fm where fm is the maximum frequency of m(t)} (a) Draw the block diagram of the used ring modulator and write down equation of the output signal of the modulator (b) Sketch spectrum of the modulated transmitted AM signal (c) Sketch the corresponding VSB AM spectrum with 25% of visitgal band relative to the other band.
TO 2, the signal...
4. (20%) An AM modulator operates with the message signal m(t) - 9 cos(207t)-8 cos(60!). The unmodulated carrier is given by 110 cos 200r), and the system operates with an index of 0.8. (10%) (a) Given that the minimum value ofm(t) is-12.9, write the equation for m, (t). and determine the power of m,(r) (i.e.. m,())) (b) Determine the efficiency of the modulator 5%) (500) (c) Sketch the double-sided spectrum of the modulator output AM signal.
4. (20%) An AM...
3. a. For the message signal m(t)-2sgnit) and unmodulated carrier cos(u,ti, draw the output of phase modulator with m(t) (n/4) cos(ω-') - For the message signal m(t)--2sgn(t) and unmodulated carrier cos(w,t) shown above where -20m, draw the output of frequency modulator with m(t) (k-10n)
3. a. For the message signal m(t)-2sgnit) and unmodulated carrier cos(u,ti, draw the output of phase modulator with m(t) (n/4) cos(ω-') - For the message signal m(t)--2sgn(t) and unmodulated carrier cos(w,t) shown above where -20m, draw...
got 50 min
sgn(t) and unmodulated carrier cos(wct), draw the output of unmodulate 3. a. For the message signal m(t)-2sgn(t) phase modulator with m(t) (k/4) cos(o t b. For the message signal m(t)--2sgn(t) and unmodulated carrier cos(wet ) shown above where ue-207, draw the output of frequency modulator with m(t) (k-10n)
sgn(t) and unmodulated carrier cos(wct), draw the output of unmodulate 3. a. For the message signal m(t)-2sgn(t) phase modulator with m(t) (k/4) cos(o t b. For the message signal...
(14%) 6. Consider an FM modulator with output )-100 cos(2(1000)r+(0) The modulator operates with fa = 8 and has the input message signal The modulator is followed by a bandpass filter with a a bandwidth of 56HZ, as shown in the following figure. Determine the power ratio and the power at the fiter oput center frequency of 1000HZ and Bandpass filter PM Output Center 1000 Hz Bandwidth 56 Hz mt-5 cos 2(8)r modulator -1000 Hz (a) FM system 39.1 39.1365...
Prob 5 (continued): with message signal m(t): m(t) 10 cos(20mt) + 6 sin(60rt) (8 points) Write an equation (do not spend time simplifying! can be in terms of both sin0 and cos0 functions) for the LSB-SSB signal if the message signal is modulated by carrier at 100 Hz: e. (6 points) Sketch the double-sided magnitude spectrum for the LSB-SSB signal (you do not necessarily need the equation from part (d) to draw this, you can go off your knowledge of...
3.14 The output signal from an AM modulator is 11 (1)-5 cos l 800π t + 20 cos 2000π t + 5 cos 2200 π . 1. Determine the modulating signal m() and the carrier c (t) 2. Determine the modulation index. 3. Determine the ratio of the power in the sidebands to the power in the carrier.
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos(wt+0), where m(t) is a signal band-limited to B Hz. The following figure shows a DSB- SC AM modulator available in the stockroom. The carrier generator available generates not cos(wct), but cos (wct). Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. 3. What kind of filter is required...
A message m(t) sinc2 (M) cos (2π9t) is used to modulate a carrier to produce an LSB-AM signal. (a) Find and sketch the spectrum of m(t); determine and sketch the spectrum of mh (t) graphically; determine m,(t) by finding the inverse Fourier transform of the previous spectrum; determine the LSB-AM message signal expression. (b) Sketch the spectrum of the DSB-SC signal 2m(t) cos 2mfet; remove the upper sideband and sketch the resulting LSB spectrum; determine the LSB-AM message signal expression...
TO 2, the signal m(t) 20 sinc ( 400't) is an input to a ring modulator with carrier frequency 10 fm where fm is the maximum frequency of m(t)} (a) Draw the block diagram of the used ring modulator and write down equation of the output signal of the modulator (b) Sketch spectrum of the modulated transmitted AM signal (c) Sketch the corresponding VSB AM spectrum with 25% of visitgal band relative to the other band.
TO 2, the signal...
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