The document discusses three types of modulation techniques: amplitude modulation, frequency modulation, and phase modulation. Amplitude modulation varies the amplitude of the carrier signal while keeping frequency and phase constant. Frequency modulation varies the frequency of the carrier signal while keeping amplitude and phase constant. Phase modulation varies the phase of the carrier signal while keeping amplitude and frequency constant. Each modulation technique has advantages and disadvantages related to power consumption, bandwidth requirements, and applications such as radio waves, television, and satellite communication.

1. GANDHINAGAR INSTITUTE OF TECHNOLGY
Department of Computer Engineering
Modulation Techniques
Student Name(Enroll No): Simoni Shah(160120107145)
Name of Faculty: Prof. Sejal Bhavsar
MCWC

2. Modulation
The combination of two or more signals for data transmission is called Modulation.
There are three types of modulation :
Amplitude Modulation
Phase Modulation
Frequency Modulation
Modulation is performed on the carrier signal.

3. Amplitude Modulation
In Amplitude Modulation , amplitude of a signal will change but the frequency and phase will remain constant.
This modulation requires high amplitude and consumes high power.

4. Disadvantage of AM:
If high amplitude signal is passed, then power consumption required will be high for the transmission.
Advantage of AM:
If the signal travel at high amplitude then it will cover more distance.
Example :
Radio Waves
Pictures in Television
Amplitude Modulation

5. Frequency Modulation
In Frequency Modulation , frequency of a signal will change but the amplitude and phase will remain constant.
This modulation requires high frequency and gives high speed.

6. Disadvantage of FM:
It requires very high bandwidth to transmit the data.
Advantage of FM:
Low power consumption for signal transmission.
Example :
Radio Waves
Audio in Television
Phone Waves
Sound forecasting
Satellite Communication
Frequency Modulation

7. Phase Modulation
In Phase Modulation , phase of a signal will change but the amplitude and frequency will remain constant.
This modulation requires high frequency and gives high speed.
Somewhat similar to frequency modulation

8. Disadvantage of FM:
It requires very high bandwidth to transmit the data.
Advantage of FM:
Low power consumption for signal transmission.
Example :
Radio Waves
Audio in Television
Phone Waves
Sound forecasting
Satellite Communication
Phase Modulation