He’s broken down the modulation and demodulation circuits into their basic op-amp stages with examples of what the signal should look like on a scope after each stage. That’s the beauty here.

Amplitude modulation (AM) was first introduced to enable long-range wireless audio communication, representing a major advancement over wireless telegraphy using spark-gap transmitters. Understanding ...

Objective: To simulate QPSK signals, focusing on modulation, transmission, and demodulation processes. Current Status: This project is under active development. The notebook includes initial work with ...

Developed a user-friendly GUI following a block diagram timeline. Enabled users to choose various modulation and demodulation processes. Processed both real-time and recorded audio signals of ...

Now, a demodulator is much harder than a modulator. The specification tells you exactly what signal to transmit, so "all" you have to do is build a piece of equipment that codes the signal in the ...

The authors describe a subharmonically pumped QPSK modulator and demodulator using pairs of beam-leaded Schottky diodes and appropriate high-pass and low-pass filters on dielectric substrates. A ...

HOLZKIRCHEN, Germany -- Sept. 20, 2016 --WORK Microwave, a leading European manufacturer of advanced satellite communications equipment, today announced a new single-carrier Wideband Demodulator that, ...

This demodulator is suitable for the quadrature phase-shift keying (QPSK) modulator previously published by the same author, "Novel Low-Cost QPSK Modulator Needs No Adjustments" (electronic design ...