Amplitude Modulation: Sine Wave Carrier of 750kHz, 4.0V, Modulated by 3kHz, 0.5V

In summary, the conversation discusses frequency and amplitude modulation, specifically in the context of a sinusoidal carrier wave with a frequency of 750kHz and unmodulated amplitude of 4.0V. The question asks for a description of the modulated carrier wave when it is amplitude-modulated by a sinusoidal signal of frequency 3kHz and amplitude 0.5V. The conversation also references potential resources for further understanding of the topic.
  • #1
NabeelIshaq
2
0
Hi everyone, plx help me on this!

I've worked out frequency modulation but can't understand amplitude modulation ...

A sinusoidal carrier wave has a frequency of 750kHz and an unmodulated amplitude of 4.0V. The carrier wave is to be amplitude-modulated by a sinusoidal signal of frequency 3kHz and the amplitude 0.5V. Describe the modulated carrier wave.


Thnx in advance :)
 
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  • #2
The wording of the question makes it look an awful lot like homework.?
 
  • #3

1. What is amplitude modulation?

Amplitude modulation (AM) is a method of encoding information onto a carrier wave by varying the amplitude (or strength) of the wave.

2. What is a carrier wave?

A carrier wave is a high frequency electromagnetic wave that is used to carry the information signal in an AM system.

3. What are the specific parameters of the AM signal in question?

The AM signal in question has a carrier frequency of 750kHz and an amplitude of 4.0V. It is modulated by a sine wave with a frequency of 3kHz and an amplitude of 0.5V.

4. How does the modulation affect the carrier wave?

The modulation causes the amplitude of the carrier wave to vary in accordance with the modulating signal, resulting in the encoded information being transmitted.

5. What are some common applications of AM?

AM is commonly used in radio broadcasting, where the carrier wave carries the audio signal for transmission. It is also used in some radar systems and telecommunication systems.

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