June 2008 Blog Posts (2)

Matlab Examples - Amplitude Demodulation Using Synchronous Detection

Here is a Matlab demonstration using Simulink on synchronous detection.

Synchronous detection is used to demodulate Double Sideband Suppressed Carrier AM (DSB-SC AM). Also known as coherent or homodyne detection, the scheme requires phase information to track the phase drift of the transmitted carrier in order for this detection scheme to work.

A basic component used to achieve this detection scheme is a phase-locked loop (PLL) circuit. The PLL circuit is more complicated… Continue

Added by John Santiago on June 27, 2008 at 2:30pm — No Comments

Matlab Examples - Amplitude Modulation

Here is an example using Matlab's Simulink to demonstrate the concept of Amplitude Modulation. Two types of amplitude modulation schemes are discussed: Double Sideband Suppressed Carrier (DSB-SC) AM and Double Sideband Large Carrier (DSB-LC) AM. DSB-LC AM is used your standard and commercial AM… Continue

Added by John Santiago on June 25, 2008 at 5:00pm — No Comments