Study of Double Sideband Amplitude Modulation Generator

Experiment Name: Study of Double Sideband Amplitude Modulation Generator.

 

Required Apparatus:

•        Module ACL [Function generator (1-10KHz/0.1-1KHz); VCD (500KHz-1500KHz); Balanced Modulator]

•        Power Supply

•        20MHz Oscilloscope

•        Connectors

 

Block Diagram:

 

Figure: Amplitude Modulator

 

Input/Output Waveshape:

 

Figure 01: Wave form of Over modulation

Figure 02: Wave form of Under modulation

Figure 03: Wave form of Flat modulation

Figure 04: Message signal form

Figure 05: Carrier signal wave form

 

Discussion:

From this experiment, we learned three types of modulation; Under modulation, Over modulation and Flat modulation. We also saw that if we increase the amplitude of message signal then the amplitude of modulated signal also increases and if we increase the carrier signal then the amplitude of modulated signal decreases.

 

Conclusion:

We were concerned if there were any loose connection while doing the experiment.Because we may get bad wave shape because of it. We checked the connection and made sure they are properly connected and the wave shape was satisfactory

keywords : lab report,eee,Communication Engineering,Electrical Engineering,sideband,double sideband,modulaion,amplitude modulation,amplitude modulation generator,Lab experiments