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What is Modulation index formula in Frequency modulation?
The modulation index formula in frequency modulation (FM) is given by the equation: β = Δf / fm, where β is the modulation index, Δf is the peak frequency deviation, and fm is the modulating frequency. Modulation index indicates how much the carrier frequency is being varied by the modulating signal in FM.
What is percentage power saving if AM transmitter with modulation index m equals 0.5 is replaced by SSBSC transmitter with same modulation index?
The percentage power saving when replacing an AM transmitter with modulation index of 0.5 with an SSBSC transmitter with the same modulation index would be approximately 93.75%. This is because SSBSC transmitters only transmit one sideband, while AM transmitters transmit both sidebands, resulting in less power usage and more efficiency.
In FM does the amplitude remains constant?
In frequency modulation (FM) the amplitude does not remain constant. Instead, the amplitude varies according to the modulation index and the frequency of the modulating signal. This is in contrast to amplitude modulation (AM), where the amplitude of the carrier signal is modulated while the frequency remains constant.
What are the charateristics of amplitude modulation?
Amplitude modulation (AM) is a method of impressing data onto an alternating current waveform by varying its amplitude in relation to the data being sent. The main characteristics of AM include the modulation index, which determines the amount of variation in the carrier wave, and the sidebands that are created as a result of modulation. AM is susceptible to noise and interference due to its reliance on the amplitude of the signal.
What is the relation between susceptibility and nonlinear refractive index?
The susceptibility of a material describes its response to an external electric field, while the nonlinear refractive index relates to the change in refractive index with intensity of light. In some cases, the nonlinear refractive index can be related to the third-order susceptibility of a material when considering nonlinear optical effects such as self-focusing or self-phase modulation.
