Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
7th Edition
ISBN: 9780199339136
Author: Adel S. Sedra, Kenneth C. Smith
Publisher: Oxford University Press
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Chapter 18, Problem 18.2P
(a)
To determine
Derive an expression for
(b)
To determine
Find an expression for the per-unit change in frequency of oscillation resulting from a phase-angle change a
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2) A voltage signal consists of the following periodical waveform:
V(t) = 10 sin 502.7t + 5 sin 94.2t + 15 sin 942.5t
where t is in seconds and Vin volts. This signal is sampled digitally at a sampling frequency of 200 Hz. 128 data
points are taken.
a) Recommend additional procedures to sample the signal properly in the frequency domain considering the
sampling conditions given above.
b) Sketch what the frequency spectrum would look like if you were to perform an FFT on these sampled data.
Label your axes carefully.
c) Calculate:
- the total sampling time
- the time increment between sampled data points
- the frequency resolution of the frequency spectrum
- the Nyquist frequency
The input voltage ?? of the following circuits is a triangular signal with an amplitude of 18Vpp, the resistance is ? = 1?Ω and source voltage is ? = 2, consider a germanium diode.graph the output voltage ?? and the current across the resistor.
DIGITAL COMMUNICATIONS
H.W.
Q1/ A) Find the sampling frequency for the following signals:
1) S1 = 20 cos(1500nt) * cos (4000nt)
2) S2 = sin (200xt.
3) S3 = sin4000nt
+ 5 cos(1200nt)
nt
B) The following waveform is the RB (return to bios) representation of the serial
digital data, find the digital data code and draw the NRZ (non-return to zero) and
RZ (return to zero) waveforms.
C)
waveform below is the PAM for the analog signal, draw the analog signal,
PWM and the PPM for this signal.
02/ The following data stream (10011011
11001110
11110000
10001000
11100000
11011010
11111111
01110111 10011001
11100111
01011010) will be transmitted with signaling rate equal to 80 k bit/sec.
1- Find the data transmitted using L- parity, V- parity and L&V parity.
2- Find the Hamming code of the last byte of the data only in which two error
can be detected and one error can be corrected, calculate the transmitted
bandwidth? how can reduce the transmitted bandwidth? Explain and calculate
the reduced…
Chapter 18 Solutions
Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
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