Modulation & Demodulation Flashcards
1
Q
What does the term Modulation mean?
A
Adding more information to the carrier wave for transmission
2
Q
How does AM vary? What does it do?
A
Amplitude Modulation: Varies in amplitude; creates sidebands which are errors/ false readings (e.g. false glideslopes)
3
Q
How does FM vary? How does it compare to AM?
A
Frequency Modulation:
Varies in frequency; requires more power and bandwidth compared to AM
4
Q
How does PM vary? What is it used in?
A
Phase Modulation:
Varies in phases; used in GPS and bluetooth
5
Q
What are the three types of modulation?
A
Amplitude Modulation
Frequency Modulation
Phase Modulation
6
Q
Which type of modulation is used in ILS?
A
Amplitude Modulation
