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ECET 310 Reading feeds the Imagination/uophelpdotcom

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Title: ECET 310 Reading feeds the Imagination/uophelpdotcom

1
ECET 310 Reading feeds the Imagination/uophelpdotc
om

2
ECET 310 Entire Course (Devry)

3
ECET 310 Week 1 Homework 1_1 (Devry)

4
ECET 310 Week 1 Homework 1_2 (Devry)

For more course tutorials visit
www.uophelp.com
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).

5
ECET 310 Week 1 Homework 1_2 (Devry)

For more course tutorials visit
www.uophelp.com
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).

6
ECET 310 Week 2 Assignment Homework 2_1 (Devry)

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www.uophelp.com
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
(a) SNR at the input
(b) SNR at the output
Noise figure
3. An FM receiver has at the input and at the
output.
Calculate the receivers noise figure in dBs.

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ECET 310 Week 2 Assignment Homework 2_2 (Devry)

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ECET 310 Week 2 Assignment Homework 2_3 (Devry)

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ECET 310 Week 3 Assignment Homework 3_1 (Devry)

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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
Modulation
(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 (Devry)

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1. 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.
6. Find the value for the required Q for the
second filter

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ECET 310 Week 4 Assignment Homework 4_1 (Devry)

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. 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?
7. If you are tuned to an FM station at a
frequency of 100.1 MHz, show the bandwidth
allocation for two adjacent stations.
8. What is the required BW to transmit a

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ECET 310 Week 5 Assignment Homework 5_1 (Devry)

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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
5. Determine the resolution and quantization
error for an eight-bit linear sign magnitude PCM
code for a maximum decoded voltage of 1.27 V
6. For a 12-bit linear PCM code with a resolution
of 0.02 V, determine the voltage range that would
be converted to the following PCM codes.

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ECET 310 Week 6 Assignment Homework 6_1 (Devry)

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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
(a) Using any system?
(b) Using a code with 64 possible

14
ECET 310 Week 7 Homework 7_1 (Devry)

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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
4. A PCM-TDM system multiplexes 32 voice channels
each with a bandwidth of 0 Khz to 4 KHz. Each
sample is encoded with an 8-bit PCM code. UPNRZ
encoding is used. Determine