Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. In amplitude modulation, the amplitude (signal strength) of the carrier wave is varied in proportion to the waveform being transmitted.
This technique is used in old day's radio Broadcasting before FM(Frequency Modulation).
AM has some advantages over FM.
1- Coverage area of AM Receiver is wider than FM because atmospheric propagation
2- AM is long distance propagation because λ
3- AM Circuit is cheaper and non complex than FM.
Here I have a simple demonstration how the amplitude of a information signal is modulated with the higher frequency carrier signal.
Here is the circuit Diagram
I have uses proteus ISIS software for simulation Purpose.
here is the Output
This technique is used in old day's radio Broadcasting before FM(Frequency Modulation).
AM has some advantages over FM.
1- Coverage area of AM Receiver is wider than FM because atmospheric propagation
2- AM is long distance propagation because λ
3- AM Circuit is cheaper and non complex than FM.
Here I have a simple demonstration how the amplitude of a information signal is modulated with the higher frequency carrier signal.
Here is the circuit Diagram
here is the Output
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