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karakov
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amplitude modulation -- why is ωc >> ωm necessary?
i just want to ask why is ωc >> ωm is necessary for a good amplitude modulation
i just want to ask why is ωc >> ωm is necessary for a good amplitude modulation
karakov said:i just want to ask why is ωc >> ωm is necessary for a good amplitude modulation
karakov said:we admit that condition . but why??
karakov said:i have in a lesson about amplitude modulation :
technically to have a good modulation .two conditions should be considered : M< 1 and ωc >> ωm (at least ten times )
karakov said:it is going to lead to distortion of the modulating waveform ?!
karakov said:I really can't find wavesform calculator .so tell me what happens ?
karakov said:ok whatever just tell me what happens ?? please.
karakov said:i just want to ask why is ωc >> ωm is necessary for a good amplitude modulation
Amplitude modulation is a method of transmitting information by varying the amplitude of a carrier wave. It is necessary because it allows for the transmission of analog signals, such as sound or video, over long distances.
ωc represents the carrier frequency, which is the frequency of the electromagnetic wave that carries the information. ωm represents the modulating frequency, which is the frequency of the signal being transmitted.
Having ωc greater than ωm ensures that the modulated signal can be easily separated from the carrier wave at the receiving end. This allows for the accurate reproduction of the original signal.
In amplitude modulation, the amplitude of the carrier wave is varied in proportion to the amplitude of the modulating signal. This results in an altered carrier wave with the information embedded in it, which is then transmitted to the receiver.
Amplitude modulation allows for the transmission of analog signals, which can accurately reproduce the original signal. It also has a wider bandwidth compared to other modulation techniques, allowing for the transmission of more information. Additionally, amplitude modulation is relatively easy and inexpensive to implement.