Tutorial 03
Transmission & Interface Design
Year 2 Semester 2
1. What is the RF band used for wi-fi communication?
I.
ISM I
II.
ISM II
III.
ISM III
IV.
UNII I
2. What are the 3 categories of RF communication Based on transmission paths
3. Explain the Shannon-Weaver Model for Communication
4. What is meant by Modulation and what are the modulation techniques available?
5. Define the term modulation index for AM
6. What are the degrees of modulation?
7. Define sidebands in frequency domain?
8. Define the term modulation index for FM
9. For frequency modulation of a signal with 15KHz, a Carrier signal with frequency of
100KHz is used. If the peak amplitude of modulating signal causes a maximum
frequency shift of 50KHZ. Calculate the modulation index
10.
Given the frequency-domain graph above, answer the following:
a) What is the frequency spectrum?
b) What is the bandwidth?
11. Compare FM and AM?
12. What is the technique used for analog to digital conversion and what are the steps
included in this method?