frequency modulation

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Related to frequency modulation: phase modulation, amplitude modulation

frequency modulation

n. Abbr. FM
The encoding of a carrier wave by variation of its frequency in accordance with an input signal.

frequency modulation

(Telecommunications) a method of transmitting information using a radio-frequency carrier wave. The frequency of the carrier wave is varied in accordance with the amplitude and polarity of the input signal, the amplitude of the carrier remaining unchanged. Abbreviation: FM Compare amplitude modulation


1. frequency modulation: a method of impressing a signal on a radio carrier wave by varying the frequency of the carrier wave.
2. a system of radio broadcasting by means of frequency modulation.
Compare AM.


Chem. Symbol. fermium.


1. fathom.
2. from.

frequency modulation

A method of radio broadcasting in which the frequency of the wave that carries the sound signal changes to reflect the various sounds that are to be reproduced, while the amplitude of the wave remains the same. Frequency modulation reduces static in radio transmission. Compare amplitude modulation.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.frequency modulation - modulation of the frequency of the (radio) carrier wavefrequency modulation - modulation of the frequency of the (radio) carrier wave
modulation - (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase

frequency modulation

nmodulazione f di frequenza
References in periodicals archive ?
This PDPWM with odd number of frequency modulation index produces the odd numbered harmonics only in the output of the inverter and all the lower order harmonics are well within the limit of IEEE-519 standard.
But before construction reaches maximum amplitude value frequency modulation of reference impact occurs, that reduce amplitude value.
The effect of PAPR in OFDM signal for radar applications can be overcome by transforming it into a Constant Envelope OFDM (CE- OFDM) signal either via phase or frequency modulation as shown in Fig.
The 200-kHz frequency between each station provides 100 kHz of bandwidth on either side of the center frequency for its frequency modulation.
In addition, using analytic or numerical computations, this technique allows obtaining proper frequency modulation laws of signals which can assure the desired response of the compression filter (i.
Micro-motion dynamics of an object or structures on the object may introduce additional time-varying frequency modulations on the radar echoes which are called micro-Doppler (m-D) effect [13,14].
Usually, linear frequency modulation (chirp) or arbitrary waveform signals are considered [4], [9] best candidates for SS.
FM-101, the most popular channel of Radio Pakistan, is the biggest frequency modulation transmission network in the country with nine broadcasting houses all over Pakistan.
Time Topic 9:00 Fourteenth meeting of the joint Arab Action Team for Frequency Modulation gets underway upon an invitation by the Telecom Organizing body at the Metropolitan hotel - Beirut 10:00 Escwa marks Solidarity Day with the Palestinian People in conjunction with the high commission for Human Rights at the UN main office - Riad Solh square, Downtown, to be followed by a lecture with deputy Bahia Hariri moderating 11:00 Press conference by the Human Rights Commission over Confronting Capital Punishment at the Human Rights' Commission main office - Starco Itinerant program for the Christian media Exhibition at St.
Now there are two companies broadcasting radio programmes from their private frequency modulation (FM) channels in the country.
Focusing more on the physics than the mathematics (though equations are included throughout), McCune begins the volume with discussion of the impact of Shannon capacity and ways its impact can be modulated, an overview of common issues and signal characterization, and individual chapters on digital amplitude modulation, digital frequency modulation, and digital phase modulation.
It also factors in the stabilisation of the company's frequency modulation (FM) radio business, and the adequacy of the cash surplus from the newspaper division to cover the television division's operations over the medium term.

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