Abstract
DESIGN AND ANALYSIS OF AMPLITUDE AND FREQUENCY MODULATION USING MATLAB SIMULINK
Ashlesha Kulkulewar*, Harshal Daware, Kanika Mittal, Komal Bhise, Prof. Kanchan Wagh
ABSTRACT
In day to day life for communication, message signals need to be transmitted over a wide range without any mixing or interference of another signal. So, Modulation is a process in which the message signal is mixed up with high frequency signal i.e. carrier signal so that it can be used for communication over a long distance. Modulation process is then classified depending on various parameters and requirements as Amplitude Modulation, Frequency Modulation and Phase Modulation. This paper gives an idea about the types of Modulation Process and brief description about the Amplitude and frequency modulation Modulation technique using Simulink, GUI and Spectrum analyzer .It also explains about working, block diagram, spectrum and variation of waveforms by changing different parameter. Simulink tool is used for designing model for Amplitude modulation. Basically it is software developed by mathworks in MATLAB which gives the advantage of building block diagrams, analyzing dynamic systems and simulating them. Analyzing the response of the amplitude modulation is somewhat tedious, so GUI makes it easier to analyze by varying different parameters. Spectrum analyzer gives output in form of the band of frequency. Using spectrum analyzer, the magnitude of an input signal versus frequency within the full frequency range of the instrument can be measured.
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