The voice quality over the phone is not as clear as in the real face-to face conversation, why? how can you improve it? Draw a simple circuit for a second order low pass filter. Roughly sketch its frequency domain characteristics. In your drawing, show the following: the passband, the stopband, the order, and the cutoff frequency.

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اتحميل لعية بيس 202. . .
[Q1] The voice quality over the phone is not as clear as in the real face-to-
face conversation, why? how can you improve it?
[Q2] Draw a simple circuit for a second order low pass filter. Roughly
sketch its frequency domain characteristics. In your drawing, show
the following: the passband, the stopband, the order, and the cutoff
frequency.
[Q3] In AM-DSB-LC, draw the transmitted signal in the cases: µ >1 and
1. State which one the better, and wvhy.
[04] Briefly explain the varactor diode, and its application in FM.
TQS] For a sinusoidal input signal, the following are two different
gencrafed FM signals at two different Bs. State which one is
generated at the larger B. Which one is better? Why? which one has
wider bandwidth.
(b)
Transcribed Image Text:ok اتحميل لعية بيس 202. . . [Q1] The voice quality over the phone is not as clear as in the real face-to- face conversation, why? how can you improve it? [Q2] Draw a simple circuit for a second order low pass filter. Roughly sketch its frequency domain characteristics. In your drawing, show the following: the passband, the stopband, the order, and the cutoff frequency. [Q3] In AM-DSB-LC, draw the transmitted signal in the cases: µ >1 and 1. State which one the better, and wvhy. [04] Briefly explain the varactor diode, and its application in FM. TQS] For a sinusoidal input signal, the following are two different gencrafed FM signals at two different Bs. State which one is generated at the larger B. Which one is better? Why? which one has wider bandwidth. (b)
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