6 Feb 2020

  • February 06, 2020
  • Amitraj
Modulation


The process of impressing low-frequency information to be transmitted on to a high-frequency wave, called the carrier wave, by changing the characteristics of either its amplitude, frequency or phase angle is called modulation.

                                           OR

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.



Advantages Of Modulation

Reduction of antenna size
No signal mixing
Increased communication range
Multiplexing of signals
Possibility of bandwidth adjustments

Improved reception quality




Need for Modulation

Short Operating Range
Poor Radiation Efficiency
Mutual Interference 
Huge Antenna Requirement







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