Exam 2: Amplitude Modulation

Three characteristics of a sine wave carrier are amplitude,frequency,and ____________.

What was ultimately developed in the search for a communications technique that was immune to noise?

The rate of phasor rotation is called angular _____________.

All information contained at the output of the AM modulator is contained within the __________.

Why are SSB receivers more difficult to tune than conventional AM receivers?

Which of the following is the most important advantage of SSB systems?

What is the term for undesired mixing?

A transmitter modulator circuit combines carrier and intelligence signals that are widely separated in _____________.

Which of the following is the term that defines when two signals at different frequencies are combined in a nonlinear device?

Mixing (modulation)is achieved when signals are applied to a(n)____________.

What type of sideband is used for analog television video transmissions?

A phasor rotating at a constant rate will generate a(n)____________.

What law is represented when current flow through a device increases in direct proportion to voltage?

Undesired frequencies in close proximity to desired ones,such as a difference frequency appearing within the baseband,are difficult if not impossible to identify and remove after they have been created.What does this occurrence represent?

Which of the following is an example of an application where double-sideband,full-carrier (DSBFC)AM would be used?

P1P1_1.75The increase and decrease in the AM waveform's amplitude is caused by the frequency difference in the _______________. P1P1_E

What is the carrier's job in the modulator?

The ___________ produces side frequencies or sidebands,one on each side of the carrier.

In an AM transmission,why does the carrier contain no information?

What is the gap called that produces distortion and results in the transmission of frequencies outside a station's normal allocated range?