Typical carrier frequency for amplitude modulation

In summary, a typical carrier frequency for amplitude modulation is around 500 kHz to 1600 kHz for AM radio broadcasting. The carrier frequency is selected based on available spectrum and desired coverage area to avoid interference. The carrier frequency is modulated by the amplitude of the modulating signal, which carries the information to be demodulated at the receiver. The choice of carrier frequency can affect the quality of the transmitted signal, with too high or too low frequencies resulting in poor reception or insufficient bandwidth. There are also regulatory limitations on the use of carrier frequencies for broadcasting that must be followed.
  • #1
SK1.618
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What is a typical carrier frequency for amplitude modulation? In particular, for amplitude modulation in spectroscopy.
 
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  • #2
It can be any frequency you want, AM is used from tens of Hz up to optical frequencies.
Likewise, spectroscopy is done using EM radiaton from the whole spectrum: from radio waves up to gamma radiation.
 

1. What is a typical carrier frequency for amplitude modulation?

A typical carrier frequency for amplitude modulation is around 500 kHz to 1600 kHz for AM radio broadcasting. However, this can vary depending on the specific application and regulations in different countries.

2. How is the carrier frequency selected for amplitude modulation?

The carrier frequency for amplitude modulation is typically chosen based on the available frequency spectrum and the desired coverage area. It is important to select a frequency that is not already being used by another station to avoid interference.

3. What is the relationship between the carrier frequency and the modulating signal in amplitude modulation?

In amplitude modulation, the carrier frequency is modulated by the amplitude of the modulating signal. This results in the carrier wave "carrying" the information of the modulating signal, which can then be demodulated at the receiver to retrieve the original signal.

4. How does the choice of carrier frequency affect the quality of the transmitted signal in amplitude modulation?

The choice of carrier frequency can have a significant impact on the quality of the transmitted signal in amplitude modulation. If the frequency is too high, it can result in poor reception due to atmospheric and other interference. If it is too low, the signal may not have enough bandwidth to transmit all of the desired information.

5. Are there any limitations to the carrier frequency in amplitude modulation?

Yes, there are limitations to the carrier frequency in amplitude modulation. In addition to potential interference and bandwidth limitations, there are also regulatory restrictions on the use of certain frequencies for broadcasting. It is important to adhere to these regulations to ensure proper and legal use of the spectrum.

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