Amplitude Modulation
Amplitude Modulation Experiment No: Experiment Name: Study of Amplitude Modulation Objective: To study and understand the process of amplitude modulation by observing the changes in the carrier wave’s amplitude in accordance with the message signal’s variations. Theory: Amplitude Modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. In AM, the amplitude (signal strength) of the carrier wave is varied in proportion to that of the message signal being transmitted. This contrasts with frequency modulation (FM) and phase modulation (PM). AM involves modulating a high-frequency carrier signal with a lower-frequency message signal. The modulated signal’s envelope changes proportionally to the voltage of the message signal. The AM signal can be expressed mathematically as: s(t)=(1+m ⋅ cos(2πf m t)) ⋅ cos(2πf c t) where: (s(t)) is the modulated signal. (m) is...