Chapter 15

Project 6: AM Transmitters


15.1    Theory

ONE of the simplest modulation schemes is amplitude modulation, which is normally just abbreviated as AM. The commercial AM broadcast radio stations in the United States use a version of AM called double sideband large carrier (DSB-LC), sometimes also called double sideband with carrier (DSB-WC). See [64,85] for some general theoretical background on amplitude modulated signals, and [86,87] for more DSP-specific background on AM communications.

For several decades now, commercial AM radio broadcasts can be received on almost any consumer radio sold in the United States. Most U.S. commercial AM radio stations, which occupy the 550 to 1600 kHz band, are used primarily for public service, ...

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