PHYS 230 - Chap 4 Practice Exam with Solutions

# PHYS 230 - Chap 4 Practice Exam with Solutions - 4...

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PHYS 230 PRACTICE EXAM Chapter 4 1. Describe a communication system that employs all three multiplexing schemes. 2. What is the name of the process which allows us to recover the baseband signal from the modulated carrier? 3. Draw three figures (baseband signal, carrier, modulated carrier) that represent the amplitude modulation of a sine wave by a square wave. The peak amplitude of the square wave is 1. The system has an index of modulation of 0.5. t t t

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PHYS 230 PRACTICE EXAM Chapter 4
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Unformatted text preview: 4. Mathematically determine the bandwidth of an AM signal operating at a carrier frequency of f C , and a maximum baseband frequency of f M . { 2 cos(a) cos(b) = cos(a+b) + cos(a-b) } 5. What is the approximate bandwidth of an FM signal operating at a carrier frequency of 52.525 MHz, a maximum baseband frequency of 3 kHz, and a maximum frequency deviation of 5 kHz. 6. Write a mathematical expression for an amplitude modulated carrier, including a DC offset term....
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PHYS 230 - Chap 4 Practice Exam with Solutions - 4...

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