Frequency Modulation

What Does Frequency Modulation Mean?

Frequency modulation (FM) is a technique used to encode data on an alternating digital or analog signal. The method includes varying the frequency of the carrier wave on which useful information is imposed or impressed upon. The signal on which data is imposed is known as the carrier signal and the resulting signal with variable frequency is called a frequency modulated signal.

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Techopedia Explains Frequency Modulation

Frequency modulation is widely used for radio transmission due to the fact that the signal-to-noise ratio (SNR) is large in this method of modulation and hence radio frequency interference is minimized. FM signals are used in technology such as radars, telemeters, EEG, radio broadcasting, satellite communication and magnetic tape recording systems. The frequencies vary by up to 5 kHz in the case of wireless two-way communication and they vary up to several MHz in the case of wireless broadcasting.

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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…