Frequency Modulation Formula
The mathematical representation of an FM signal can be expressed by using the formula. The instantaneous frequency , of the FM waveform at any given time is given by
F(t) = Fc + Kf . m(t)
where, f(t) is instantaneous frequency at time t of the modulated signal
Fc is the carrier frequency, representing the unmodulated frequency
Kf is the frequency sensitivity of the modulator, often referred to as the modulation index
m(t) is the message signal, which contains the information to be encoded into the carrier signal.
Frequency Modulation
Frequency Modulation or FM is a method of encoding information on one carrier wave by changing the wave carrier frequency. Frequency Modulation technology is used in the fields of computing, telecommunications, and signal processing. In frequency modulation, the frequency of the carrier wave is changed according to the frequency of the modulating signal.
In this article, we will discuss the definition of frequency modulation, its advantages and disadvantages, the modulation index, the differences between AM and FM, and the expressions for frequency modulation.
Table of Content
- What is Frequency Modulation?
- Frequency Modulation Deviation
- Frequency Modulation Demodulation
- Application of Frequency Modulation
- Modulation Index
- Difference between FM and AM
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