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ECET 310 Entire Course   ECET 310 Week 1 Homework
1_1 ECET 310 Week 1 Homework 1_2 ECET 310 Week 2
Assignment Homework 2_1 ECET 310 Week 2
Assignment Homework 2_3 ECET 310 Week 3
Assignment Homework 3_1 ECET 310 Week 3
Assignment Homework 3_2 ECET 310 Week 5
Assignment Homework 5_1 ECET 310 Week 7 Homework
7_1
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ECET 310 Week 1 Homework 1_1   Computer Science -
General Computer Science 1. Add (a) 60 dB
25 dB (b) 20 dBW 5 dBW (c) 22 dB - 4 dB
2. Convert (a) 65 W into dB (b) 10 dB
into watts
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ECET 310 Week 1 Homework 1_2   1 . Four
frequencies are applied at the input of a
non-linear amplifier. Write down all of the
frequency components at the output of the
non-linear device. Write down only the first
three harmonics. 2. Find out the frequency
components at the output of a resonant-tuned
circuit tuned at 1200 KHz with a bandwidth of 15
KHz and connected at the output of a non-linear
amplifier (mixer).
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ECET 310 Week 2 Assignment Homework 2_1   1.
Assume that a receiver has a first amplifier
stage with a 5KW input resistance, a gain of 300,
an input audio signal of 20 mV, and an operating
temperature of 27oC. When the amplifier is
operating with a bandwidth first of 10 MHz, find
(a) therms input noise levels (b) the audio
output levels the rms output noise levels 2.
We have an amplifier with a 1 MHz bandwidth and a
20 mV input signal. The input mV, output mV, and
output mV. Find
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ECET 310 Week 2 Assignment Homework 2_2   1.
fCUTOFF 130 KHz T 25 ? Sec Draw
the frequency spectrum of the output of the low
pass filter. 2. Draw the frequency spectrum of
the output if the filter is
14 marks A high pass filter
fC 20 KHz
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ECET 310 Week 2 Assignment Homework 2_3   1. The
bandwidth of a series resonant circuit is 400
Hz. (a) If the resonant frequency is 4000 Hz,
find Q. (b) If O, what is the value of XL at
resonance? Find the inductance L and capacitance
C of the circuit. 2. The frequency response
curve for an RLC circuit is shown in the
diagram. (a) Determine Q and bandwidth for the
frequency response curve shown.
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ECET 310 Week 3 Assignment Homework 3_1   . An
AM signal has an unmodulated carrier voltage VC
10VP, a load resistance of RL 10, and a
modulation index of m 1. Determine Modulatio
n (a) PC Vc2/2/2(10) PSB PT-PC/2
(b) Total power in the AM signal 2. Find the
modulation index corresponding to the given
trapezoidal pattern for the AM signal. 3. You
are tuned to an AM station at 1200 KHz. Write
down the frequency components of the received AM
signal. 4. Draw an AM signal for the given
conditions
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ECET 310 Week 3 Assignment Homework 3_2   Draw
the frequency spectrum at the output of the first
balanced modulator. 2. If the filter is a low
pass filter, draw the frequency spectrum at the
output of the filter and amplifier 3. Draw the
frequency spectrum at the output of the second
balanced modulator. 4. If the filter is a low
pass filter, draw the frequency spectrum at the
output of the filter and linear power
amplifier. 5. Find the value for the required Q
for the first filter.
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ECET 310 Week 4 Assignment Homework 4_1   Define
FM. 2. What parameter of the intelligence
signal causes frequency deviation of the
carrier? 3. What parameter of the
intelligence signal causes or determines the rate
of carrier frequency deviation? 4. Define
modulation index for FM. 5. What is the
reason that FM requires wider bandwidth as
compared to AM? 6. What characteristics
of FM signal are shown by Bessel Function
Solution of FM signal?
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ECET 310 Week 5 Assignment Homework
5_1   Determine the Nyquist sample rate for a
maximum analog input frequency of (a) 4 KHz 10
KHz 2. Determine the dynamic range for a 10-bit
sign-magnitude PCM code. 3. Determine the minimum
number of bits required in a PCM code for a
dynamic range of 80 dB. What is the coding
efficiency? 4. For a resolution of 0.04 V,
determine the voltages for the following linear
seven- bit sign magnitude PCM codes
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ECET 310 Week 6 Assignment Homework 6_1   1.
For a 64-PSK modulator with an input data
rate(fb) equal to 36 Mbps and a carrier frequency
of 100 MHz, determine the minimum double-sided
Nyquist bandwidth(fN) and the baud. Sketch the
output spectrum. 2. Determine the
bandwidth efficiency for the following
modulators (a) QPSK
(b) 64-QPSK
(c)
128-QAM 3. A radio channel has
a bandwidth of 10 KHz and a SNR of 15 dB. What is
the maximum data rate that can be
transmitted
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ECET 310 Week 7 Homework 7_1   For a QPSK system
and the given parameters, determine 2. Which
system requires the highest Eb/No ratio for a
probability of error of 10-7, four-level QAM or
8-PSK system? 3. Determine the minimum bandwidth
required to achieve a P(e) of 10-4 for a 16-PSK
system operating at 25 Mbps with a
carrier-to-noise ratio of 10 dB
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