Edwin Howard Armstrong is the inventor of modern frequency modulation
FM means Frequency Modulated.FM stands for modulation on frequency or frequency modulation.
in frequency modulation, frequency of carrier signal changes. so frequency variations of carrier convey all the information in frequency modulation.
Advantages: it improves frequency stability. phase modulation n demodulation is easy as compared to frequency modulation.
Modulation is any of several means of encoding an information carrying signal onto a carrier of fixed frequency. The purpose is to allow the information to be transported long distances.
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FM means Frequency Modulated.FM stands for modulation on frequency or frequency modulation.
The difference between frequency modulation and phase modulation is that with frequency modulation the angular frequency of the signal is modified while with the phase modulation, the phase angle of the signal is modified.
AM - Amplitude Modulation FM - Frequency Modulation
Modulation Index is the ratio of the maximum deviation frequency to the frequency of modulation. In other words it is the ratio of the spread in frequency spectrum to the frequency that was used to modulate the carrier. For FM, modulation index is given by the formula mf= df/f where, mf=modulation index for FM df=difference in carrier frequency f=frequency of the signal
FM means frequency modulation AM means amplitude modulation
fc>2fm
frequency modulation..
a measure of the degree of frequency modulation expressed numerically for a pure tone modulation as the ratio of the frequency deviation to the frequency of the modulating signal.
Frequency Modulation _____________________________________________________________________ fayetville-manlius
Modulation schemes depends on frequency.
Normal frequency range for amplitude modulation is 550kHz to 1610kHz
Amplitude of the (high frequency) Carrier signal is varied with respect to low frequency of message signal is called amplitude modulation. Frequency of the carrier signal is varied with respect to low frequency of message signal is called frequency modulation.