What is the full form of FM?

The full form of FM is Frequency Modulation. FM is a method or technique for encoding information about a particular analogue or digital signal by altering the frequency of the carrier wave in response to the frequency of the modulating signal. A modulating signal is analogous to a message that must be conveyed to an electrical signal after it has been modified.

The carrier frequency signal is adjusted to become the message signal in Frequency Modulation while the amplitude, phase, and amplitude remain constant.

Facts about FM

• Edwin Armstrong founded FM in the United States in 1930.
• The radio wave is referred to as the carrier wave, yet the phase and amplitude phase remains constant.
• Increased bandwidth and increased sound quality are included.
• FM has a frequency range of 88 to 108 MHz in the upper band.
• Less sensitive to sound.

Use of FM

FM is most commonly used in radio broadcasting. FM offers a higher signal-to-noise ratio, which is advantageous in radio broadcasting. It means there is little interference with radio frequencies. It is for this reason that many radio stations use FM to broadcast music.

Advantages of FM

• There is less noise and interference.
• When compared to Amplitude Modulation, power usage is lower.
• Guard bands are used to separate adjacent FM channels.

Limitations of FM

• The apparatus is expensive, but it has a wide bandwidth.
• A faint FM signal is received.
• The antennas must be kept close to FM systems for optimal interaction.