0
It can't.
FM (like broadcast AM) has two *sidebands*, one at a higher frequency than the transmitter's carrier, one at a lower frequency.
The modulating signal (voice, music, etc) of any trasnmitter creates one or more pairs of side frequencies within the two sidebands.
A broadcast AM signal can only produce two side frequencies, so an AM transmitter at 1.5 MHz, with a 1 kHz modulating tone (fm), would put out its carrier (fc) at 1.5 MHz, a lower side frequncy at (1.5 - 0.001) = 1.499 MHz, then its carrier at 1.5 MHz, and then the upper side frequency at (1.5 + 0.001) = 1.501 MHz.
The AM signal can never be wider than twice the highest modulating frequency (fm), spanning from (fc - fm) to (fc + fm), a span of 2 x fm. Be aware that special-purpose AM systems can generate just *one* sideband - we won't go into that amount of detail apart from noting it.
FM signals can be wider than twice the highest modulating frequency. The complete analysis needs the mathematical Fourier Transform, but we can think of it this way.
Stronger frequency modulation shows up as a larger change in the transmitted signal frequency. An FM signal at 100 MHz, modulated by a 1 KHz tone, *can* put out a lower side frequency at (100 - 0.001) = 99.999 MHz and an upper side frequency at (100 + 0.001) = 100.001 MHz.
You could receive this just fine, but it would sound "weak" compared to normal broadcasts.
It's possible to increase the frequency shift to (say) five times. Now, the sidebands must extend from (100 - 5x0.001) = 99.995 MHz to (100 + 5x0.001) = 100.005 MHz. How do we account for the original 1 KHz tone creating a bandwidth of 2x5 kHz?
The answer is that we actually have *five* lower side frequencies, at -5, -4, -3, -2, -1 kHz below the carrier, and *five* upper side frequencies at +1, +2, +3 +4 and +5 kHz above the carrier. Notice that they are multiples of the original 1 kHz modulating frequency. These can, in fact, be shown on the instrument called a spectrum analyser.
Your question?
As with broadcast AM, an FM signal has only two sidebands. In FM, the strength of modulation (the modulation index) controls the number of individual side frequencies, and thus the total bandwidth of the signal.
Can an FM signal have *infinite* numbers of side frequencies?
Not really. It can have a *very large* number of side frequencies with very great modulation strength. In practice, this would take up *a lot* of the FM radio band, so broadcast FM commonly uses a maximum modulation index of 5.0. This means that a fully-modulating 15 kHz signal would give a bandwidth of -(15 x 5) to +(15 x 5) kHz, which is +/- 75 kHz.
What else can I help you with?
How many sidebands does an FM signal generate?
2, 4, 6, 8, 10 it depends on the amount of modulation. 100%1 on each side, 200% 2 sidebands on each side.
A modulated waveform that contains a carrier plus two sidebands for each modulation frequency is a description of?
Both AM and narrow-band-FM.
What is narrow band FM and how a narrow band FM generate?
If the modulation index of FM is kept under 1, then the FM produced is regarded as narrow band FM. Lower the modulation index, lower the no. of significant sidebands are produced (with reference to bessel function). So lower the no. of significant sideband, lowerer will be the bandwidth of the resulting FM prduced. Sometimes, Narrow Band FM is regarded as, when the significant energy in FM occupies the same bandwidth as ordinary AM with the same modulating signal.
What number is after 471999?
There are an infinte amount of numbers after 471999 but the next integer or whole number is 472000
How does the frequency change in a FM transmitter?
-- the modulation index varies -- the instantaneous deviation varies -- the amplitude of the carrier component varies -- the spectrum of sidebands varies -- the total occupied bandwidth varies
Mathematical expression for side band amplitudes in FM signal?
In frequency modulation (FM), the sideband amplitudes can be expressed using Bessel functions. For an FM signal with a modulation index ( \beta ) (the ratio of the frequency deviation to the modulation frequency), the amplitudes of the sidebands are given by ( J_n(\beta) ), where ( J_n ) is the Bessel function of the first kind of order ( n ). The sideband amplitudes corresponding to the carrier frequency will have values of ( J_n(\beta) ) for ( n = 0, \pm 1, \pm 2, \ldots ). Thus, the total signal can be represented as a sum of these sidebands, modulated around the carrier frequency.
What are the frequency components at the output of the modulator?
The frequency components at the output of a modulator typically include the carrier frequency and the sidebands generated by the modulation process. For amplitude modulation (AM), the output contains the carrier frequency along with upper and lower sidebands, which are spaced from the carrier by the modulating frequency. In frequency modulation (FM), the output consists of the carrier frequency and a series of sidebands determined by Bessel functions, reflecting the modulation index. The specific frequencies present depend on the modulation scheme and the characteristics of the input signal.
What two numbers multiply into 70?
The simplest answer is 1 and 70. There an infinte number of other pairs.
What are all the numbers divisible by 38?
Infinte. 38 x any number will be divisible by 38
Whats the text number for Heart FM?
The number for Heart FM is 82122. Hope it helped!
Why you are suppressing the 2 sidebands of dsbsc?
The sidebands are not suppressed in DSB-SC ... that's where the information is !.The carrier is suppressed, and only the sidebands are transmitted. The mainadvantage of doing that is the fact that the RF power that would otherwise beused for the carrier is then available for the sidebands. This swap typicallyresults in increased range of communication with the same amount of power.
What is the purpose of sidebands?
to protect information
