FM: Frequency Modulation
- FM full form is Frequency Modulation. “Electromagnetic Wave” is another name for it.
- It is largely used for broadcasting and and other types of radio communication.
- Frequency Modulation is a method of transferring data over a carrier wave in telecommunication.
- The carrier wave’s frequency varies depending on the amplitude and polarity of the incoming signal.
- Radio broadcasting is done on both FM and AM, but it is different from AM.
- Amplitude Modulated Electromagnetic Wave is an acronym for AM. Because the amplitude of AM signals may be easily changed, it is prone to interference.
- Frequency Modulation, on the other hand, is significantly less susceptible to interference because its amplitude cannot be easily changed.
History
- In early 1930’s, Edwin Howard Armstrong had invented Frequency Modulation broadcasting technology.
Benefits of FM broadcasting
- Because the information in an its signal is modified by frequency variation rather than amplitude variation, it is less susceptible to noise.
- FM radio has a wider frequency range than AM radio. It has a frequency range of 88 to 108 MHz (1200 to 2400 bits per second).
- The larger bandwidth of it produces superior sound quality.
- FM radio is sometimes known as High Fidelity sets because of its excellent audio quality.
- Non-linear RF amplifiers can be used to amplify its signals in FM broadcasting.
- It is a resistant to signal variation, making it ideal for mobile applications with continually changing signal levels.
- Its broadcasting, modulation can be used on the transmitter’s low-power stage.
Common Applications
- FM Radio
- Television Sound
- Satellite TV
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