Building a frequency modulation circuit The FM modulator circuit (frequency modulation) is built with a Motorola MC1648P oscillator. Two varactors, Motorola MV-209 are used to frequency modulate the ...

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.

A new article discusses the physics of frequency modulation in superconducting quantum circuits, ultracold atoms, nitrogen-vacancy centers in diamond and nanoelectromechanical resonators. Share: ...

Researchers from MIT and elsewhere have designed a novel transmitter chip that significantly improves the energy efficiency ...

Field tests are described which investigate the transmission of compatible-single-sideband signals from a typical high-power transmitter for high-frequency broadcasting and which compare reception ...

Step 3: Massive X’s two inaudible Phase Modulation oscs – ‘operators’ in FM speak – can modulate the frequency of the two audible oscillators. Lighting up Osc 1’s PM1 button engages the first Phase ...