1b - Modulation Techniques

Question 1

The three major analog modulation techniques:

Answer 1

AM
FM
Single Sideband (SSB)

Question 2

___ uses the amplitude variations of the intelligence signal to change the amplitude of the RF carrier wave.

Answer 2

AM

Question 3

In AM, the carrier itself contains ____ intelligence. All the intelligence is in the ____.

Answer 3

no ; sidebands

Question 4

AM radio broadcasting has assigned channels ranging from ___ to ____ at 10kHz intervals.

Answer 4

550kHz ; 1700kHz

Question 5

The 5kHz on either side of the carrier frequency for AM are for the ___ and ___.

Answer 5

LSB ; USB

Question 6

The simplest AM demodulation uses a ____.

Answer 6

single diode rectifier circuit

Question 7

The two ways of demodulation for AM?

Answer 7

Single diode rectifier circuit
Synchronous demodulation

Question 8

____ is formed by removing the carrier signal and one sideband signal.

Answer 8

SSB

Question 9

Essentially derived from using two carrier signals that are 90 out of phase, then adding intelligence.

Answer 9

QAM

Question 10

SSB consists of only ____.

Answer 10

one sideband; the carrier is suppressed and the other sideband is eliminated