by •Amplitude modulation is the process of changing the amplitude of carrier signals as required and the frequency and phase remain constant.
•Used for radio signal transmission
•One of imitation is quality of the signal is low due to noise affects the modulated signal.
Frequency Modulation
•Frequency Modulation is the process of changing the frequency of carrier signal as required a the amplitude and phase remains constant.
•It gives high-quality signals because the noise does not affect the modulated signal.
•It is useful for FM radio, Television Transmission.
Phase Modulation
•Phase modulation is process of changing the phase angle of carrier signals as required and the amplitude and frequency remain constant.
•It is similar to FM modulation (Advancement of FM modulation).
•Noise less transmission.
•Used in TV transmission and mobile communication.
