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The output signal from an AM modulator is given by: Find: a) determine the modulating signal...
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.
1 2 4. The amplitude modulation signal is given by the following expression and is applied...
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4. The amplitude modulation signal is given by the following expression and is applied to 75 load. Vam(t) = 10 sin (21fct) - 2.5 cos (1500krt) + 2.5 cos (1450krt) V Determine: a) Modulation index b) The frequency of the carrier and the information signal c) The bandwidth d) The total power e) The transmission power efficiency be ar e 5. One of the inputs to a frequency modulator is a 250 kHz carrier signal with amplitude of...
Q2 The output signal of an angle modulator is given as V(t) = 6 cos(2000000net +...
Q2 The output signal of an angle modulator is given as V(t) = 6 cos(2000000net + 40 cos(2000xt) + 15cos (400nt)) (v) Determine the following: The average power of the signal. b) The carrier frequency of the signal. The instantaneous frequency of the signal. d) The instantaneous maximum frequency deviation of the signal. e) The wavefom of the message signal, assuming a frequency modulation (FM). f) The modulation index, assuming a FM. Is it a broadband FM or narrowband FM...
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...
()=< a) Consider the case where a modulating tone v, a cos(2ft) is used in a...
()=< a) Consider the case where a modulating tone v, a cos(2ft) is used in a Double Side Band m Amplitude Modulation (DSC-AM) scheme whose varying with time carrier amplitude is [K+a cos(2ft Provide the equation of the modulated carrier signal v (t and then derive from that an expression that shows the spectral components of v (t). Furthermore provide the phasor representation of DSB-AM. Now consider the case of Double Side Band Suppressed carrier AM and provide both the...
3.8 An AM modulator operates with the message signal m(t)-9 cos(20π)--8 cos(60π) m(t) = 9 cos(20π)...
3.8 An AM modulator operates with the message signal m(t)-9 cos(20π)--8 cos(60π) m(t) = 9 cos(20π) + 8 cos(60x1) The unmodulated carrier is given by 110cos(200)Same steps with another signal. and the system operates with an index of 0.8 the system operates with an indet or (a) Write the equation for ma(t), the normalized sig- nal with a minimum value of- (b) Determine (m the power in m (c) Determine the efficiency of the modulator (d) Sketch the double-sided spectrum...
below is used to modulate a carrier to generate the AM signal yt) (Am()) cos(1000t) The periodic signal m() shown a) The power efficiency of the system is measured to be 1 () The type of AM modula...
below is used to modulate a carrier to generate the AM signal yt) (Am()) cos(1000t) The periodic signal m() shown a) The power efficiency of the system is measured to be 1 () The type of AM modulation, i.e. SSB, DSBSC, (i) The constant A. (ili) The modulation index 1/13. Determine DSB with carrier enit -3 b) An angle modulated signal is given by d(t-2 cos (2n1061+ sin 2 1000). Find i) The carrier frequency. ii) The baseband signal bandwidth....
Consider an AM system with the message signal m(t) shown below. The modulated signal is given...
Consider an AM system with the message signal m(t) shown below. The modulated signal is given by Φ AM (t)-2(b + 0.5m(r)]cos oat a) Determine the message power, sideband power, and the carrier power f6 points b) If b=2, find the modulation index μ and power efficiency 18 points) m(t) 2
A carrier signal c(?) = ? cos(??) is modulated by a single-tone signal ?(?) = ?...
A carrier signal c(?) = ? cos(??) is modulated by a single-tone signal ?(?) = ? ???(??) to form the AM signal: s(t)= [? + ????(??)]???(??), where ? = 10, ? = 2, ? = 1000 ??, ? = 50 ??. a- Obtain an expression for the sidebands of ?(?). b- Sketch ?(?) c- Sketch the spectra |?(?)|, |?(?)|, |?(?)| against f. d- Calculate the modulation index (m) e- What bandwidth is required to transmit the AM signal. f- Show...
4. Given a modulating signal m(t) = 2cos (100nt) + 2cos (250nt) + 2sin (100nt) is...
4. Given a modulating signal m(t) = 2cos (100nt) + 2cos (250nt) + 2sin (100nt) is modulated using AM SSB-SC using fe at 1000 Hz. (a) Draw by hand, the magnitude spectra of the modulated signal, retaining the Lower Sidebands, for the appropriate frequency range in Hz. (4) (b) Diagram and explain the demodulation and filtering process to retrieve m(t). (4) (c) What must be modified in the modulation and demodulation processes if you were to implement AM VSB vs....
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.
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4. The amplitude modulation signal is given by the following expression and is applied to 75 load. Vam(t) = 10 sin (21fct) - 2.5 cos (1500krt) + 2.5 cos (1450krt) V Determine: a) Modulation index b) The frequency of the carrier and the information signal c) The bandwidth d) The total power e) The transmission power efficiency be ar e 5. One of the inputs to a frequency modulator is a 250 kHz carrier signal with amplitude of...
Q2 The output signal of an angle modulator is given as V(t) = 6 cos(2000000net + 40 cos(2000xt) + 15cos (400nt)) (v) Determine the following: The average power of the signal. b) The carrier frequency of the signal. The instantaneous frequency of the signal. d) The instantaneous maximum frequency deviation of the signal. e) The wavefom of the message signal, assuming a frequency modulation (FM). f) The modulation index, assuming a FM. Is it a broadband FM or narrowband FM...
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...
()=< a) Consider the case where a modulating tone v, a cos(2ft) is used in a Double Side Band m Amplitude Modulation (DSC-AM) scheme whose varying with time carrier amplitude is [K+a cos(2ft Provide the equation of the modulated carrier signal v (t and then derive from that an expression that shows the spectral components of v (t). Furthermore provide the phasor representation of DSB-AM. Now consider the case of Double Side Band Suppressed carrier AM and provide both the...
3.8 An AM modulator operates with the message signal m(t)-9 cos(20π)--8 cos(60π) m(t) = 9 cos(20π) + 8 cos(60x1) The unmodulated carrier is given by 110cos(200)Same steps with another signal. and the system operates with an index of 0.8 the system operates with an indet or (a) Write the equation for ma(t), the normalized sig- nal with a minimum value of- (b) Determine (m the power in m (c) Determine the efficiency of the modulator (d) Sketch the double-sided spectrum...
below is used to modulate a carrier to generate the AM signal yt) (Am()) cos(1000t) The periodic signal m() shown a) The power efficiency of the system is measured to be 1 () The type of AM modulation, i.e. SSB, DSBSC, (i) The constant A. (ili) The modulation index 1/13. Determine DSB with carrier enit -3 b) An angle modulated signal is given by d(t-2 cos (2n1061+ sin 2 1000). Find i) The carrier frequency. ii) The baseband signal bandwidth....
Consider an AM system with the message signal m(t) shown below. The modulated signal is given by Φ AM (t)-2(b + 0.5m(r)]cos oat a) Determine the message power, sideband power, and the carrier power f6 points b) If b=2, find the modulation index μ and power efficiency 18 points) m(t) 2
4. Given a modulating signal m(t) = 2cos (100nt) + 2cos (250nt) + 2sin (100nt) is modulated using AM SSB-SC using fe at 1000 Hz. (a) Draw by hand, the magnitude spectra of the modulated signal, retaining the Lower Sidebands, for the appropriate frequency range in Hz. (4) (b) Diagram and explain the demodulation and filtering process to retrieve m(t). (4) (c) What must be modified in the modulation and demodulation processes if you were to implement AM VSB vs....
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