6-Amplitude Modulation

6-Amplitude Modulation - PRINCIPLES OF COMMUNICATIONS 6 -...

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6 - AMPLITUDE MODULATION BASIC PRINCIPLES PRINCIPLES OF COMMUNICATIONS
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AMPLITUDE MODULATION Amplitude Modulation Amplitude modulation is defined as a system of modulation in which the amplitude of the carrier is made proportional to the instantaneous amplitude of the modulating voltage.
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AM WAVE Amplitude modulated wave and equation:
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AM PARAMETERS Modulating Index and Percent Modulation The modulating index should not exceed 1 (100% for the percent modulation) Greater than 1 modulating index will cause over-modulation or distortion in the modulated waveform, which may affect the intelligence of the signal. Assignment: What is adjacent channel interference due to over- modulation? How can over-modulation be prevented? (Explain in detail)
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SIDE BAND AND BANDWIDTH CALCULATIONS AM signal: Upper Sideband: Lower Sideband: Bandwidth Requirement:
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AM WAVEFORMS AND SPECTRUM
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TIME DOMAIN AND FREQUENCY DOMAIN WAVEFORMS
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Highest Modulating Frequency: 4.5kHz Channel Bandwidth:
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This note was uploaded on 07/22/2011 for the course ECON 101 taught by Professor Dunst during the Spring '08 term at Alabama.

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6-Amplitude Modulation - PRINCIPLES OF COMMUNICATIONS 6 -...

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