Block 4 - 1H - Demodulation

Demodulation is the...

• The process of extracting the intelligence signal from the carrier signal

• The process of extracting the current from the voltage

• The process of extracting the gnomes from their homes

• The process of extracting capacitance from capacitors

In AM, we use ____ to accomplish detection

• Diode rectifier

• Diode amplifier

• Diode demodulation

• Diode envelopes

Diode rectifiers are also known as...

• Envelope detectors

• Envelope messengers

• Envelopes

• Letter detectors

Demodulators must meet 3 requirements, what are they?

• Must be sensitive to the type of modulation applied at the input

• Must be nonlinear

• Must provide filtering

• Must have three resistor

• Must have three capacitors

What is the main advantage of envelope detectors?

• Cheap

• Reliable

• Determined

• Hard working

For FM demodulation, we use...

Discriminators are sensitive to what?

• Sticks and stones

• Frequency

• Amplitude

• Capacitance

• Inductance

Tuned transformers are in...

• Zener diodes

• Discriminators

• Capacitors

• Detectors

The transformer is tuned to...

• The carrier center frequency

• The intelligence center frequency

• The composite frequency

Foster-Steeley operates using a phase difference between signals. What is the phase difference?

• 0 degrees

• 90 degrees

• 180 degrees

• 360 degrees