See Our New JEE Book on Amazon

Amplitude Modulation


Amplitude modulation (AM) is a method of modulating a signal by varying the amplitude of a carrier wave in response to the modulation signal.


In AM, the carrier signal is typically a high-frequency sine wave, and the modulation signal is a lower-frequency audio signal. The audio signal is used to vary the amplitude of the carrier wave in a way that reflects the information being carried.


  1. Sky and space wave propagation
  2. Frequency modulation
  3. Communication Bandwidth
JEE Physics Solved Problems in Mechanics