Why is amplitude modulation used?

Frequency Modulation (FM) is the encoding of information in a carrier wave by changing the instantaneous frequency of the wave . FM technology is widely used in the fields of computing, telecommunications, and signal processing.

AM is used for broadcasting because its use avoids receiver complexity . Only a diode and a capacitor are sufficient to separate the audio signal from the AM wave.

Quadrature amplitude modulation: AM is widely used for the transmission of data in everything from short range wireless links such as Wi-Fi to cellular telecommunications and much more . Effectively it is formed by having two carriers 90° out of phase.

Amplitude modulation is a process by which the wave signal is transmitted by modulating the amplitude of the signal. It is often called AM and is commonly used in transmitting a piece of information through a radio carrier wave . Amplitude modulation is mostly used in the form of electronic communication.