There are many different varieties of modulation but they all fall into three basic categories, namely amplitude modulation, frequency modulation and phase modulation, although frequency and phase ...

Frequency Modulation (FM) sounds simple at first, but understanding the electronics behind modulation and demodulation of an FM signal can be confusing.

Frequency Modulation (or FM) synthesis is a simple and powerful method for creating and controlling complex spectra, introduced by John Chowning of Stanford University around 1973. In its simplest ...

Phase modulation Another form of modulation that is widely used, especially for data transmissions, is Phase Modulation (PM). As phase and frequency are inextricably linked (frequency being the rate ...

Modern Modulation Techniques Jul 1, 2014 9:00 AM, Jeremy Ruck, PE One simple form of FM is frequency-shift keying, or FSK. In FSK, digital information is transmitted through discrete changes in the ...

Okay, that is enough about frequency. Next we will examine how the radio waves are used to carry meaningful data–such as card ID numbers–between transmitters and receivers. To give you a hint, it is ...

Radio Frequency and Optical Fiber Radio frequency (RF) refers to the part of the electromagnetic spectrum where electromagnetic waves can be generated by alternating current fed to an antenna.

This article explains the basics of signal generators and also explains the various architectures used to generate electronic signals.

There are two radio modulation schemes everyone should know. Amplitude modulation changes the amplitude — or ‘volume’, if you will — of a carrier frequency and turns all rad… ...