Amplitude Modulation

Question 0

Define modulation

Answer 0

Process where info is superimposed upon a RF (carrier wave)

Question 1

What are the 3 types of modulation?

Answer 1

Amplitude, frequency, phase

Question 2

What is the waveform of the original intelligence?

Answer 2

Modulating wave

Question 3

Define carrier wave

Answer 3

Waveform used to carry modulating wave to gain further distance of transmission

Question 4

What is carrier wave otherwise known as?

Answer 4

RF

Question 5

What is the waveform created by encoding the modulating waveform onto the carrier wave?

Answer 5

Modulated wave

Question 6

AM is defined as a method in which ………. of the modulated wave is varied in accordance with the ……….. of the modulating wave

Answer 6

Amplitude and amplitude

Question 7

If amplitude of transmission varies in a repetitive manner it is said to have a ………………………

Answer 7

Periodic envelope

Question 8

This is the term used to describe the outline of the amplitude variations in respect to time

Answer 8

AM envelope

Question 9

Range of speech frequency?

Answer 9

300 Hz to 3400 Hz

Question 10

3 disadvantages of DSB

Answer 10

Waste or transmission power, excessive bandwidth, prone to selective fading

Question 11

What am I? Method of operation in which either the upper or lower sideband is transmitted, individually?

Answer 11

SSB

Question 12

If depth of modulation exceeds 100%, what happens to transmission?

Answer 12

Distorted