What is AM?
Amplitude Modulation is the done by modulating the Amplitude of an sinoid Carrier signal. The Carrier Signal has usually a higher Frequency than the modulating signal.
Picture1: Carrier Signal in time domain Picture2: Carrier Signal in frequency domain Picture3: Modulating Signal in time domain Picture4: Modulating Signal in frequency domain
Picture5: Modulated Signal
special kinds of AM
- DSSC, double side band supressed carrier
- SSB, single side band
- residual sideband modulation (modulation used for analog TV applications)