![Question 2 (Total 20 marks) (a) Given an AM signal Vam (t)=5[10+ cos(1000xt) ]cos(30000īt) volts is fed to a 1000 load. Deter](http://img.homeworklib.com/questions/bc1d3550-f6d1-11eb-8390-2f26bbdf934b.png?x-oss-process=image/resize,w_560)
Please answer these 4 questions because they are related to each other. Thanks:)
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Please answer these 4 questions because they are related to each
other. Thanks:)
Question 2 (Total...
Make sure you show all working and describe each step in your calculations. 1. A signum function ...
signals and communications 2
Make sure you show all working and describe each step in your calculations. 1. A signum function is defined as sgn(t) = { 1、12 0 1 t<0 Plot and express this function in terms of the unit-step function. 5 marks/ Determine and plot the even and odd parts of the signal 2. x(t) (te-3 +2)u(t). 5 marks 3. If prove that y[n-m] = x[n-m] * h[n]. 5 marks 4. Assuming α > 0, plot the signal...
1 2 4. The amplitude modulation signal is given by the following expression and is applied...
1
2
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...
P1 Using trigonometry write down a Fourier series representation for the AM signal with a message...
P1 Using trigonometry write down a Fourier series representation for the AM signal with a message as given in equation: s(t) Ae[1 + m (cos w,t + cos2m t)] cos at, P2. From the result in question Pl give an expression for the AM signal s(t) as the real part of complex exponentials Sketch a rotating phasor diagram for s(t) using the carrier frequency as a reference Р3. Write down the Fourier transform of s(t) in question P1. Sketch the...
P1 Using trigonometry write down a Fourier series representation for the AM signal with a message...
P1 Using trigonometry write down a Fourier series representation for the AM signal with a message as given in equation: s(t) Ae[1 + m (cos w,t + cos2m t)] cos at, P2. From the result in question Pl give an expression for the AM signal s(t) as the real part of complex exponentials Sketch a rotating phasor diagram for s(t) using the carrier frequency as a reference Р3. Write down the Fourier transform of s(t) in question P1. Sketch the...
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amp...
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amplitude spectrum, SPM(f), is shown below: Amplitude spectrum of the frequency modulated signal 2 -2 5000 4000 3000 2000 -1000 1000 2000 3000 4000 5000 frequency f [Hz] a) What is the carrier frequency fe? b) What is the message frequency fm c) What is the FM modulation index Bf? Is it a narrowband or a wideband signal? d) Using Carson's rule, estimate the transmission...
I am really need these solutions. Can your help me please? this is a last part...
I am really need these solutions. Can your help me please?
this is a last part for my class final. I am really stuck at
it
Problem 1 If v(t) = 80 cos(200t) V and i(t) = 180 cos(200t + 75°) mA for some load, then calculate the instantaneous power and average power absorbed by the load Problem 2 Find the average power absorbed by the 102 resistor in the circuit below 492 -15.2 20/45°v 01v. 81. 59 109 {v....
I got help with task 1 and 2 . can you help me with task 3 and 4 of this question. please help me...
I got help with task 1 and 2 . can you help me with task 3 and 4
of this question. please help me step for step thanks.
A signal x[n] modulated by multiplying it by a carrier wave cos(2*p1"/cm) to form the signal z[n] = cos(2"p1"Vcm)x[n] ·The modulated signal z[n] multiplies with the same carrier wave to give the signal y[n]=cos(2*pi"Vcm)z[n] and filters with an LT-system to give x-hat [n] . all this are described by the picture below...
signals and communications 2
Make sure you show all working and describe each step in your calculations. 1. A signum function is defined as sgn(t) = { 1、12 0 1 t<0 Plot and express this function in terms of the unit-step function. 5 marks/ Determine and plot the even and odd parts of the signal 2. x(t) (te-3 +2)u(t). 5 marks 3. If prove that y[n-m] = x[n-m] * h[n]. 5 marks 4. Assuming α > 0, plot the signal...
1
2
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...
P1 Using trigonometry write down a Fourier series representation for the AM signal with a message as given in equation: s(t) Ae[1 + m (cos w,t + cos2m t)] cos at, P2. From the result in question Pl give an expression for the AM signal s(t) as the real part of complex exponentials Sketch a rotating phasor diagram for s(t) using the carrier frequency as a reference Р3. Write down the Fourier transform of s(t) in question P1. Sketch the...
P1 Using trigonometry write down a Fourier series representation for the AM signal with a message as given in equation: s(t) Ae[1 + m (cos w,t + cos2m t)] cos at, P2. From the result in question Pl give an expression for the AM signal s(t) as the real part of complex exponentials Sketch a rotating phasor diagram for s(t) using the carrier frequency as a reference Р3. Write down the Fourier transform of s(t) in question P1. Sketch the...
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amplitude spectrum, SPM(f), is shown below: Amplitude spectrum of the frequency modulated signal 2 -2 5000 4000 3000 2000 -1000 1000 2000 3000 4000 5000 frequency f [Hz] a) What is the carrier frequency fe? b) What is the message frequency fm c) What is the FM modulation index Bf? Is it a narrowband or a wideband signal? d) Using Carson's rule, estimate the transmission...
I am really need these solutions. Can your help me please?
this is a last part for my class final. I am really stuck at
it
Problem 1 If v(t) = 80 cos(200t) V and i(t) = 180 cos(200t + 75°) mA for some load, then calculate the instantaneous power and average power absorbed by the load Problem 2 Find the average power absorbed by the 102 resistor in the circuit below 492 -15.2 20/45°v 01v. 81. 59 109 {v....
I got help with task 1 and 2 . can you help me with task 3 and 4
of this question. please help me step for step thanks.
A signal x[n] modulated by multiplying it by a carrier wave cos(2*p1"/cm) to form the signal z[n] = cos(2"p1"Vcm)x[n] ·The modulated signal z[n] multiplies with the same carrier wave to give the signal y[n]=cos(2*pi"Vcm)z[n] and filters with an LT-system to give x-hat [n] . all this are described by the picture below...
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