analysis_project_3

analysis_project_3 - The first stage contributes the most...

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ECT 350 ELECTRONIC COMMUNICATIONS NOISE IN COMMUNICATIONS ANALYSIS PROJECT 3 1. What type of noise is equipment noise? What produces equipment noise? This type of noise is generated by equipment that produces sparks. 2. Why is it difficult to measure signal-to-noise ratio? Although it may be possible to measure the noise power by turning off the signal, it is not possible to turn off the noise in order to measure just the signal power itself. 3. In cascade amplifiers, which stage contributes the most noise?
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Unformatted text preview: The first stage contributes the most noise 4. What output Signal-to-Noise (S/N) will be present in the figure below? ( 29 o S N (dB) = ( 29 i S N (dB) - NF (dB) = 50 dB 3 dB = 47 dB 5. What noise voltage will be generated across a 10 k resistor under the following conditions? T = 110C, bandwidth = 1 MHz. 4kTBR V N = Sqrt(4(1.38 x 10-23 ) x (383) x (1 x 10 6 ) x (10 x10 3 )) = 1.45 x 10-5...
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This note was uploaded on 11/14/2011 for the course ECT 350 taught by Professor Brom during the Summer '11 term at N.C. A&T.

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