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IFT 372

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IFT 372 Practice Mid Term Exam Fall B 2019
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1. A continuous-spectrum baseband signal has a spectrum extending from 3 kHz to 8 kHz. It is applied as one input to an ideal balanced modulator. The carrier input is a sinusoid having a frequency of 100 kHz. (a) Determine the range of frequencies contained in the DSB output spectrum. (b) Determine the required transmission bandwidth for an AM modulated system. a. This spectrum ranges from 3-8kHz. fc = 100kHz Lowest frequency = 100kHz – 8kHz = 92kHz Highest frequency = 100kHz + 8kHz = 108...

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  •  • 13 pages's • 
  • by Kingamor • 
  • uploaded  2022
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ASU IFT 372 Fall 2018 Helm Weeks 1-7 Quizzes + Midterm Multisource
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What is a logarithm? Correct answer: A logarithm is an exponent based mathematical representation of a numerical value. What logarithmic base is used in digital communications? Correct answer: Two How do you find a log2 value on a calculator that only has log10 functionality? (Hint: what is the formula?) Correct answer: log2(a) = [log10(a) / log10(2)] What is the definition of a decibel? Correct answer: a = 10lob(b), where a is the decibel value and b is the decimal value Correct answer...

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  •  • 30 pages's • 
  • by Kingamor • 
  • uploaded  2022
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