Amplitude Modulation
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May 1, 2024
3 minute read
Amplitude modulation (AM) is a modulation technique that varies the amplitude of a high-frequency carrier signal in accordance with the waveform of a second signal called the modulating signal. This process results in the modulation of the carrier signal's amplitude, hence the name amplitude modulation.
Applications of Amplitude Modulation
Amplitude modulation has found widespread applications in various fields, including:
- Radio broadcasting: AM is commonly used in radio broadcasting to transmit audio signals over long distances. The modulating signal in this case is the audio signal, which modulates the amplitude of the carrier signal.
- Image transmission: AM is also utilized in image transmission systems, such as facsimile machines and early television systems, where the modulating signal carries image data.
- Data communication: AM can be used for data transmission over long distances, where the modulating signal carries digital data.
Advantages of Amplitude Modulation
AM offers several advantages:
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