Homework3 - 1 sensitivity of receiver is its ability to...

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1 2 sensitivity of receiver is its ability to drive the output transducer to an acceptable level. Selectivity is the extent to which a receiver is capable of differentiating between the desired signal and other frequencies. These expressions are usually expressed in kHz. 3 excessive selectivity results in the reception of unwanted adjacent radio signals and the additional external noise that is directly proportional the bandwidth selected. 4 550 kHz=1/(2 π *sqrt(25 μ H * C)) C=3.35 nF 1550 kHz=1/(2 π *sqrt(25 μ H * C)) C=.422 nF Q=1000 kHz/10 kHz Q=100 BW = 1550 kHz/100 =15.5 kHz BW = 550 kHz/100 =5.5 kHz 5 A region of low current indicates that for small signals the output will follow square law. For input signals with large amplitudes , the output is linear. Harmonic outputs are limited. Abrupt nonlinearity occurs for the negative half cycle. 6 Advantages: they can handle high power signals, distortion levels are accepted for most AM applications, highly efficient, and they develop a
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This note was uploaded on 12/01/2011 for the course ELN 234 taught by Professor Cindykiger during the Fall '11 term at Guilford Tech.

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Homework3 - 1 sensitivity of receiver is its ability to...

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