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Matlab Example – Bode Plots of a Low Pass Filter (Part 2)

The Matlab tutorial article continues with providing an example of a low pass filter (LPF) to graph its bode plot in Matlab. The low pass filter was implemented using a simple RC-circuit. To review, bode plots are basically logarithmic graphs of a linear time-invariant system as a function of frequency. Bode plots are useful tools [...] . . . → Read More: Matlab Example – Bode Plots of a Low Pass Filter (Part 2)

Simulink / Matlab Tutorial and Example – Low Pass Filter (Part 1)

The Matlab tutorial provides a quick introduction describing a low pass filter (LPF). A LPF passes low frequency signals while attenuating the amplitude of signals with higher frequencies at a frequency called the cutoff frequency. The cutoff frequency determines when frequencies of the input signal passes through the filter unattenuated and what signal frequencies gets [...] . . . → Read More: Simulink / Matlab Tutorial and Example – Low Pass Filter (Part 1)

Matlab Examples – Envelope Detection

Below is a video I posted at YouTube on Envelope Detection to Demodulate Amplitude Modulation (or Double Sideband Demodulation). Envelope detection can be modeled as a multiplication of a pulse train and the message followed by a low pass filter. Some of the links in the post above are “affiliate links.” This means if you [...] . . . → Read More: Matlab Examples – Envelope Detection

Matlab Examples – Amplitude Demodulation using Coherent Detection

My previous post talked about modulating the amplitude of the carrier to embed a message signal. The demo uses Simulink found in Matlab. Here, I will show how we can recover our transmitted message using synchronous detection (coherent or homodyne detection). Synchronous detection does not waste any energy in the carrier when there is no [...] . . . → Read More: Matlab Examples – Amplitude Demodulation using Coherent Detection