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Identify three frequencies of signal that alias to a 7Hz signal assuming the signal is sampled...
A real 40MHz sinewave is sampled at 100M Hz. (a) List all frequencies up to 200MHz...
A real 40MHz sinewave is sampled at 100M Hz. (a) List all frequencies up to 200MHz that would alias into 40MHz. (b) Specify the appropriate cutoff frequency for the filter that should be employed by the 100MHz A/D converter. (This is not dependent in this particular input; I mean if you built a 100MHz A/D converter, what should the cutoff frequency be for this filter). (c) Specify the input signal frequency on the following scales (with units): analog radian frequency,...
Problem 3 For the following signals, 345 points were sampled. a) 3.75 Hz signal sampled at...
Problem 3 For the following signals, 345 points were sampled. a) 3.75 Hz signal sampled at 10 Hz b) 24.8 Hz signal sampled at 20 Hz c) 175 Hz signal sampled at 30 Hz Determine: i) The Nyquist frequency and whether the signal is aliased. ii) The values for Af and the uncertainty in the frequency ur (round to the nearest 0.001 Hz). If aliased, what is the aliased frequency (include a marked-up folding diagram, available on Canvas for Quiz...
3. For this problem, we consider a signal made of the sum of three simultaneously present sinusoi...
3. For this problem, we consider a signal made of the sum of three simultaneously present sinusoids (t) sin(2m fit) sin(2"f2t) +sin(2m fst) at frequencies of fl = 3 Hz, f2 = 7 Hz, and f3-11 Hz. (a) Plot the signal as a function of time. Label the axis as amplitude and time in seconds. 〉Ou (b) The signal is to be sampled by a detector. According to the Nyquist Sampling Theorem can pick a range that covers several periods...
Q2.) Consider the sampling of the continuous-time signal x(t) to obtain a discrete-time signal x[...
Q2.) Consider the sampling of the continuous-time signal x(t) to obtain a discrete-time signal x[n (1)-10cos(1000m + π/3) + 20cos(2000m + π/6). 110points! ], where x a) What is the maximum sampling interval (minimum sampling frequency) that could be used to ensure an aliasing free sampling of this signal? b) Plot the spectrum of the sampled signal if x() is sampled using a sampling frequency of (i) 2500 Hz (ii) 1800 Hz and state whether there will be an aliasing...
Consider an arbitrary periodic signal with a period of 2 seconds. Give the equation for the...
Consider an arbitrary periodic signal with a period of 2
seconds.
Give the equation for the infinite Fourier Series (Trigonometric
Form) for this signal.
where, the fundamental period/frequency is:
=2
sec and
=12 Hz
a)List the frequencies present in the analog (continuous-time)
signal.
b)Assume that the analog signal is sampled at 2 Hz. List the
digital frequencies present in the resulting digital signal.
c)What are the magnitudes of the sine and cosine terms
associated with each of these digital frequencies?...
1. An analog signal \(\mathrm{x}(\mathrm{t})\) contains frequencies from 0 up to \(10 \mathrm{kHz}\). You can assume...
1. An analog signal \(\mathrm{x}(\mathrm{t})\) contains frequencies from 0 up to \(10 \mathrm{kHz}\). You can assume any arbitrary spectrum for this signal. (Note that this signals also has frequencies from 0 to \(-10 \mathrm{KHz} .)\) a) Draw the frequency spectrum of the signal after it has been sampled with a sampling frequency \(\mathrm{F}_{\mathrm{s}}=25 \mathrm{kHz}\) b) What range of sampling frequencies allows exact reconstruction of this signal from its samples? c) How is the original signal reconstructed from the sampled signal?...
Q1) Given an analog signal X(t) = 3 cos (2π . 2000t) + 2 cos (2π...
Q1) Given an analog signal X(t) = 3 cos (2π . 2000t) + 2 cos (2π . 5500t) sampled at a rate of 10,000 Hz, a. Sketch the spectrum of the sampled signal up to 20 kHz; b. Sketch the recovered analog signal spectrum if an ideal lowpass filter with a cutoff frequency of 4 kHz is used to filter the sampled signal in order to recover the original signal ; c. Determine the frequency/frequencies of aliasing noise . Q2)...
1. Identify the first five spectral images (frequency contents) of a 200 Hz signal sampled at...
1. Identify the first five spectral images (frequency contents) of a 200 Hz signal sampled at 600 Hz. 2. An analog signal has a range of 15 V. If the quantization step must be no greater than 0.01V, how many bits must be used for A/D conversion? answer is 11 bits but explain
MATLAB Fourier transform. Suppose that a signal x(t) is sampled with sampling frequency fs =100Hz. The sequence x[n] obtained after the sampling is given below: Take the DFT of the sampled sequence a...
MATLAB Fourier transform. Suppose that a signal x(t) is sampled
with sampling frequency fs =100Hz.
The sequence x[n] obtained after the sampling is given below:
Take the DFT of the sampled sequence and plot
its magnitude and phase.
What is the frequency resolution (Δf) of your plot?
N= 20, 100 Hz
N= 20, 100 Hz
36. Sampling a low-pass signal. A signal x(t) = sin( 1,000.71) is sampled at the rate...
36. Sampling a low-pass signal. A signal x(t) = sin( 1,000.71) is sampled at the rate of F, and sent through a unity-gain ideal low-pass filter with the cutoff frequency at F,/2. Find and plot the Fourier transform of the reconstructed signal z(t) at filter's output if a. F=20 kHz b. Fs =800 Hz
A real 40MHz sinewave is sampled at 100M Hz. (a) List all frequencies up to 200MHz that would alias into 40MHz. (b) Specify the appropriate cutoff frequency for the filter that should be employed by the 100MHz A/D converter. (This is not dependent in this particular input; I mean if you built a 100MHz A/D converter, what should the cutoff frequency be for this filter). (c) Specify the input signal frequency on the following scales (with units): analog radian frequency,...
Problem 3 For the following signals, 345 points were sampled. a) 3.75 Hz signal sampled at 10 Hz b) 24.8 Hz signal sampled at 20 Hz c) 175 Hz signal sampled at 30 Hz Determine: i) The Nyquist frequency and whether the signal is aliased. ii) The values for Af and the uncertainty in the frequency ur (round to the nearest 0.001 Hz). If aliased, what is the aliased frequency (include a marked-up folding diagram, available on Canvas for Quiz...
3. For this problem, we consider a signal made of the sum of three simultaneously present sinusoids (t) sin(2m fit) sin(2"f2t) +sin(2m fst) at frequencies of fl = 3 Hz, f2 = 7 Hz, and f3-11 Hz. (a) Plot the signal as a function of time. Label the axis as amplitude and time in seconds. 〉Ou (b) The signal is to be sampled by a detector. According to the Nyquist Sampling Theorem can pick a range that covers several periods...
Q2.) Consider the sampling of the continuous-time signal x(t) to obtain a discrete-time signal x[n (1)-10cos(1000m + π/3) + 20cos(2000m + π/6). 110points! ], where x a) What is the maximum sampling interval (minimum sampling frequency) that could be used to ensure an aliasing free sampling of this signal? b) Plot the spectrum of the sampled signal if x() is sampled using a sampling frequency of (i) 2500 Hz (ii) 1800 Hz and state whether there will be an aliasing...
Consider an arbitrary periodic signal with a period of 2
seconds.
Give the equation for the infinite Fourier Series (Trigonometric
Form) for this signal.
where, the fundamental period/frequency is:
=2
sec and
=12 Hz
a)List the frequencies present in the analog (continuous-time)
signal.
b)Assume that the analog signal is sampled at 2 Hz. List the
digital frequencies present in the resulting digital signal.
c)What are the magnitudes of the sine and cosine terms
associated with each of these digital frequencies?...
MATLAB Fourier transform. Suppose that a signal x(t) is sampled
with sampling frequency fs =100Hz.
The sequence x[n] obtained after the sampling is given below:
Take the DFT of the sampled sequence and plot
its magnitude and phase.
What is the frequency resolution (Δf) of your plot?
N= 20, 100 Hz
N= 20, 100 Hz
36. Sampling a low-pass signal. A signal x(t) = sin( 1,000.71) is sampled at the rate of F, and sent through a unity-gain ideal low-pass filter with the cutoff frequency at F,/2. Find and plot the Fourier transform of the reconstructed signal z(t) at filter's output if a. F=20 kHz b. Fs =800 Hz
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