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Analog Communication - Assignments

This document contains 3 assignments related to analog communication topics. Assignment 3 contains 2 questions about noise figure calculations and noise types in receivers. Assignment 4 contains questions about image frequency rejection in a superheterodyne receiver and the functioning of a TRF receiver. Assignment 5 asks about generating and demodulating a PAM signal and the working of an SSB-SC transmitter shown in a block diagram.

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Neeraj Sharma
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227 views2 pages

Analog Communication - Assignments

This document contains 3 assignments related to analog communication topics. Assignment 3 contains 2 questions about noise figure calculations and noise types in receivers. Assignment 4 contains questions about image frequency rejection in a superheterodyne receiver and the functioning of a TRF receiver. Assignment 5 asks about generating and demodulating a PAM signal and the working of an SSB-SC transmitter shown in a block diagram.

Uploaded by

Neeraj Sharma
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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Vivekananda Global University

Assignment: 3
Subject: Analog Communication (BEC405)

Q1. A mixer stage has a noise figure of 20 dB. This mixer


stage is preceded by an amplifier which has a noise figure of 9
dB and available power gain of 15 dB. Find the overall noise
figure to the input.

Q2. Explain the different types of noises which may be


created within a receiver or amplifier. Discuss the effects of
these noises on the performance of the receiver.

Assignment: 4

Q1. In a broadcast Super heterodyne receiver having no RF


amplifier, the loaded Q of the antenna coupling is 100. If the
IF is 455 kHz, determine the image frequency and its
rejection ratio for tuning at 1100 kHz.

Q2. Draw the block schematic diagram of a TRF type of AM


broadcast receiver. Explain its functioning and its
deficiencies.

Assignment: 5

Q1. Explain how a PAM signal may be generated. How can it


be demodulated?

Q2. With the help of neat block schematic diagram, explain


the working of an SSB-SC transmitter

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