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ECET 310 ASSIST Expect Success
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ECET 310 Entire Course (Devry)

• 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 (Devry)

• 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
• (c) 5 dB into watts .
• (d) 30 dBm into dBrn
• (e) 15 dBrn into dBm
• 2. A three-stage amplifier is shown with power
  gains. Calculate total power

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ECET 310 Week 1 Homework 1_2 (Devry)

• ECET 310 Week 1 Homework 1_2
• Computer Science - General Computer Science
• 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 (Devry)

• ECET 310 Week 2 Assignment Homework 2_1
• Computer Science - General Computer Science
• 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

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ECET 310 Week 2 Assignment Homework 2_2 (Devry)

• 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 (Devry)

• ECET 310 Week 2 Assignment Homework 2_3
• Computer Science - General Computer Science
• 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.
• (b) For µF, determine L and R for the resonant
  circuit.

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ECET 310 Week 3 Assignment Homework 3_1 (Devry)

• ECET 310 Week 3 Assignment Homework 3_1
• Computer Science - General Computer Science
• 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)

• ECET 310 Week 3 Assignment Homework 3_2
• Computer Science - General Computer Science
• 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)

• 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?
• 7. If you are tuned to an FM station at a
  frequency of 100.1 MHz, show the bandwidth
  allocation for two adjacent stations.

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ECET 310 Week 5 Assignment Homework 5_1 (Devry)

• ECET 310 Week 5 Assignment Homework 5_1
• Computer Science - General Computer Science
• 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 (Devry)

• 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 states?
• 4. A modulator transmits symbols, each
  of which has 64 different possible states, 15,000
  times per second. Calculate the baud rate and the
  bit rate.

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ECET 310 Week 7 Homework 7_1 (Devry)

• ECET 310 Week 7 Homework 7_1
• Computer Science - General Computer Science
• 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

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