Homework Answers
Add Answer to:
(a) Show that for any B 〉 0 and any c E R. 3, sinc is a Fourier transform pair. You may assume the Fourier transform pair Pr(t) ←→ τ sine ( (b) An ideal bandpass filter has frequency response w) 0,...
5. Fourier Transform and System Response (12 pts) A signal æ(t) = (e-t-e-3t)u(t) is input to...
5. Fourier Transform and System Response (12 pts) A signal æ(t) = (e-t-e-3t)u(t) is input to an LTI system T with impulse response h(t) and the output has frequency content Y(jw) = 3;w – 4w2 - jw3 (a) (10 pts) Find the Fourier transform H(jw) = F{h(t)}, i.e., the frequency response of the system. (b) (2 pts) What operation does the system T perform on the input signal x(t)?
Aliasing occur? (Justify your answer.) 5.38. An ideal lowpass digital filter has the frequency fu...
5.38 a,b,c
aliasing occur? (Justify your answer.) 5.38. An ideal lowpass digital filter has the frequency function H(2) given by H(n) (a) Determine the unit pulse response h[n] of the filter. (b) Compute the output response yln] of the filter when the input [n] is given by (i) x[n] = cos(m/8), n = 0, ±1, ±2, . . . (ii) x[n] = cos(3rm4) + cos(πη/16), n = 0, ±1, ±2,… (iii) x[n]-sinc(n/2), n-0, ±1,±2 (iv) x[n] = sine(n/4), n =...
5.17 The frequency response of an ideal low-pass filter is -1/2 S2 > 0 |H(S2) =...
5.17 The frequency response of an ideal low-pass filter is -1/2 S2 > 0 |H(S2) = - -2 <92 < 2 otherwise ZH (12) = 0 1/2 12 < 0 (a) Calculate the impulse response h(t) of the ideal low-pass filter. (b) If the input of the filter is a periodic signal x(t) having a Fourier series 2 X(t) = cos(3kt/2) k=1 determine the steady-state response yss(t) of the system. Answers: h(t) = (1 - cos(2t))/(nt); Yss(t) = 2 sin(1.5t).
2. (14 points) This problem shows an example of using the Fourier transform to analyze communicat...
2. (14 points) This problem shows an example of using the Fourier transform to analyze communication systems. The system in Figure 4, where (t)-f(t)+sin(wt) and has been proposed for amplitude modulation. f(t) + sin(o) Figure 4: System proposed for amplitude modulation. (a) (7 points) The spectrum of the input f(t) is shown in Figure 1, where 2mB o/100. Sketch and label the spectrum Y(w) of the signal y(t). Hint: You will need to use the frequency convolution property of the...
a) Two bandpass signals are added together. j2rfet j2Tfet y(t)-Re y(t)e v(t)-x(t) y(t) v(t) may be represented as, What...
a) Two bandpass signals are added together. j2rfet j2Tfet y(t)-Re y(t)e v(t)-x(t) y(t) v(t) may be represented as, What is v(t) as a function of (t) and y(t)? b) Suppose that a bandpass filter with centre frequency f has an impulse response h(t). Since h(t) is a bandpass function, it has the complex envelope representation, h (t) = Re[h(t)e'2n4 ], where h(t ) is the complex envelope of h (t) Suppose that s(t) is filtered with the filter with impulse...
A) Find frequency response, x (Fourier Series), where k is frequency index -Sksoo b) Find values ...
SHOW STEP BY STEP SOLUTION. THIS IS LINEAR SYSTEM
ANALYSIS.
a) Find frequency response, x (Fourier Series), where k is frequency index -Sksoo b) Find values of x when k1, 0, 1, 2 4 2 46 a) A Fourier Transform of rectangle is defined as T=11 2.4.2 sinc (2.2.f) 16-sinc(4.f) a) 16 4 b)-1.0000 0 1.0000 2.0000 -0.2773-0.17821 2.9091 -0.2773 0.17821 -0.3835 0.83981 So the Fourier series is x =-| 16-sincl 4-1-e , r + 16 . sinc! 4-1-e -16-sinc...
In each step to follow, the signals h(t), a(t), and y(t) denote respectively the impulse response...
In each step to follow, the signals h(t), a(t), and y(t) denote respectively the impulse response, input, and output of a continuous-time LTI system. Accordingly, H(w), X(w) and Y(w) denote their Fourier transforms. Hint: Carefully consider for each step whether to work in the time domain or frequency domain. (b) (25 points) On the axes below, provide a clearly labeled sketch of y(t) for all t given Σ H(w)-( ) sine? (w/8) j2Tt r(t)-e δ(t-n/2) and with sinc(t) = sin(t)/t...
(b) (2 pts) (t) is given as r(t) e sin(t) Find X(jw). Show that X(jw) =...
(b) (2 pts) (t) is given as r(t) e sin(t) Find X(jw). Show that X(jw) = 25 + (w- 1)225(w+1)2 (c) (4 pts) x(t) is given as x(t)-π inc(t) cos(nt). Find X(jw) (d) (4 pts) 2(t) is given as 2(t) e Áil+ 3) + e' ỗ(t-3). Find X (jw). Simplify the answer as (e) (4 pts) 2(t) is given as r(t) = rect(2(t )) reetgehj)). Hint: use Fourier Transform pair: sine(t)艹rect( ) much as possible Find X(jw). Simplify the answer...
6.(20%) Given a filter with frequency response function 5 F[h(t)=H=4+j(2f) 3 and given an input x(t)...
6.(20%) Given a filter with frequency response function 5 F[h(t)=H=4+j(2f) 3 and given an input x(t) eu(t) with its Fourier transform by 1 = *U)-3+ j(27f) F[x()] (10%) (a) Obtain the energy spectral density G,(f) for the input signal x(t) (10%) (b) Obtain the energy spectral density G.(f) for the output signal y(t)
6.(20%) Given a filter with frequency response function 5 F[h(t)=H=4+j(2f) 3 and given an input x(t) eu(t) with its Fourier transform by 1 = *U)-3+ j(27f) F[x()]...
Please show working and explanation if possible. Thank you so much in advance b) Given that the Fourier transform of f() is g(w)- esf (7 marks) Deduce the Fourier transform of f"(t + τ). c) A...
Please show working and explanation if possible. Thank
you so much in advance
b) Given that the Fourier transform of f() is g(w)- esf (7 marks) Deduce the Fourier transform of f"(t + τ). c) A Free nduction Decay (FID) signal from a certain spectroscopic experiment was measured to be 7. )- A ex exp -i2 T. for t > 0, where Q, and Ω2 are 150x106 radian/s and 200x10° radians, respectively, while T, and 7, are 25 ns and...
5. Fourier Transform and System Response (12 pts) A signal æ(t) = (e-t-e-3t)u(t) is input to an LTI system T with impulse response h(t) and the output has frequency content Y(jw) = 3;w – 4w2 - jw3 (a) (10 pts) Find the Fourier transform H(jw) = F{h(t)}, i.e., the frequency response of the system. (b) (2 pts) What operation does the system T perform on the input signal x(t)?
5.38 a,b,c
aliasing occur? (Justify your answer.) 5.38. An ideal lowpass digital filter has the frequency function H(2) given by H(n) (a) Determine the unit pulse response h[n] of the filter. (b) Compute the output response yln] of the filter when the input [n] is given by (i) x[n] = cos(m/8), n = 0, ±1, ±2, . . . (ii) x[n] = cos(3rm4) + cos(πη/16), n = 0, ±1, ±2,… (iii) x[n]-sinc(n/2), n-0, ±1,±2 (iv) x[n] = sine(n/4), n =...
5.17 The frequency response of an ideal low-pass filter is -1/2 S2 > 0 |H(S2) = - -2 <92 < 2 otherwise ZH (12) = 0 1/2 12 < 0 (a) Calculate the impulse response h(t) of the ideal low-pass filter. (b) If the input of the filter is a periodic signal x(t) having a Fourier series 2 X(t) = cos(3kt/2) k=1 determine the steady-state response yss(t) of the system. Answers: h(t) = (1 - cos(2t))/(nt); Yss(t) = 2 sin(1.5t).
2. (14 points) This problem shows an example of using the Fourier transform to analyze communication systems. The system in Figure 4, where (t)-f(t)+sin(wt) and has been proposed for amplitude modulation. f(t) + sin(o) Figure 4: System proposed for amplitude modulation. (a) (7 points) The spectrum of the input f(t) is shown in Figure 1, where 2mB o/100. Sketch and label the spectrum Y(w) of the signal y(t). Hint: You will need to use the frequency convolution property of the...
a) Two bandpass signals are added together. j2rfet j2Tfet y(t)-Re y(t)e v(t)-x(t) y(t) v(t) may be represented as, What is v(t) as a function of (t) and y(t)? b) Suppose that a bandpass filter with centre frequency f has an impulse response h(t). Since h(t) is a bandpass function, it has the complex envelope representation, h (t) = Re[h(t)e'2n4 ], where h(t ) is the complex envelope of h (t) Suppose that s(t) is filtered with the filter with impulse...
SHOW STEP BY STEP SOLUTION. THIS IS LINEAR SYSTEM
ANALYSIS.
a) Find frequency response, x (Fourier Series), where k is frequency index -Sksoo b) Find values of x when k1, 0, 1, 2 4 2 46 a) A Fourier Transform of rectangle is defined as T=11 2.4.2 sinc (2.2.f) 16-sinc(4.f) a) 16 4 b)-1.0000 0 1.0000 2.0000 -0.2773-0.17821 2.9091 -0.2773 0.17821 -0.3835 0.83981 So the Fourier series is x =-| 16-sincl 4-1-e , r + 16 . sinc! 4-1-e -16-sinc...
In each step to follow, the signals h(t), a(t), and y(t) denote respectively the impulse response, input, and output of a continuous-time LTI system. Accordingly, H(w), X(w) and Y(w) denote their Fourier transforms. Hint: Carefully consider for each step whether to work in the time domain or frequency domain. (b) (25 points) On the axes below, provide a clearly labeled sketch of y(t) for all t given Σ H(w)-( ) sine? (w/8) j2Tt r(t)-e δ(t-n/2) and with sinc(t) = sin(t)/t...
(b) (2 pts) (t) is given as r(t) e sin(t) Find X(jw). Show that X(jw) = 25 + (w- 1)225(w+1)2 (c) (4 pts) x(t) is given as x(t)-π inc(t) cos(nt). Find X(jw) (d) (4 pts) 2(t) is given as 2(t) e Áil+ 3) + e' ỗ(t-3). Find X (jw). Simplify the answer as (e) (4 pts) 2(t) is given as r(t) = rect(2(t )) reetgehj)). Hint: use Fourier Transform pair: sine(t)艹rect( ) much as possible Find X(jw). Simplify the answer...
6.(20%) Given a filter with frequency response function 5 F[h(t)=H=4+j(2f) 3 and given an input x(t) eu(t) with its Fourier transform by 1 = *U)-3+ j(27f) F[x()] (10%) (a) Obtain the energy spectral density G,(f) for the input signal x(t) (10%) (b) Obtain the energy spectral density G.(f) for the output signal y(t)
6.(20%) Given a filter with frequency response function 5 F[h(t)=H=4+j(2f) 3 and given an input x(t) eu(t) with its Fourier transform by 1 = *U)-3+ j(27f) F[x()]...
Please show working and explanation if possible. Thank
you so much in advance
b) Given that the Fourier transform of f() is g(w)- esf (7 marks) Deduce the Fourier transform of f"(t + τ). c) A Free nduction Decay (FID) signal from a certain spectroscopic experiment was measured to be 7. )- A ex exp -i2 T. for t > 0, where Q, and Ω2 are 150x106 radian/s and 200x10° radians, respectively, while T, and 7, are 25 ns and...
Most questions answered within 3 hours.
-
. Please give the mechanism for this type of problem. Step by
Step
The toxin that...
asked 12 seconds from now -
If you have a 1M stock solution and you want to dilute 1 :10
with water,...
asked 1 minute ago -
In a load instruction, the effective address is obtained by
A) Retriving the address from a...
asked 1 minute ago -
Use the following information to answer this question.
Windswept, Inc. 2017 Income Statement ($ in millions)...
asked 2 minutes ago -
A mutual fund salesperson has arranged to call on four people
tomorrow. Based on past experience...
asked 35 minutes ago -
Let the RV Y has the pdf
f ( y ) = 6 y ( 1...
asked 47 minutes ago -
Question 12
Where should a copy of a private key should be placed so it is...
asked 4 minutes ago -
What is the entropy change to the surroundings when 1 mol of ice
melts in someone's...
asked 24 minutes ago -
Pt1
An electrochemical cell is set up at 25°C based on the overall
reaction represented by...
asked 30 minutes ago -
Explain traveling wave theory. Explain how the peaking of the
wave leads to action potentials and...
asked 21 minutes ago -
If you mixed 35.0 mLmL of 0.100 M Tris-HCl with 65.0
mLmL of 0.200 M Tris-base, what would...
asked 18 minutes ago -
Which force do you think wields a stronger influence over our
ethical behavior – our personal...
asked 23 minutes ago