How do you choose carrier frequency value?

If you subtract from the carrier frequency the frequency of the tone that modulates it, then filter out the carrier frequency, then you have a lower sideband frequency. If you add to the carrier frequency, filter out the carrier, then you have an upper sideband frequency.

in frequency modulation, frequency of carrier signal changes. so frequency variations of carrier convey all the information in frequency modulation.

Upper sideband = Carrier frequency + modulating frequency Lower sideband = Carrier frequency - modulating frequency

Bandwidth increases as carrier frequency increases.Both are measured in Hz.Bandwidth is nothing but a frequency range.

probably (the carrier frequency +- the maximum frequency of the pulse train)/(the carrier frequency) but pulses have a lot of harmonics

choose a carrier in which you have an real interest you can choose your carrier by asking what your heart likes to do. factor affecting carrier: money, parent synchronization, physical condition

FM stands for frequency modulation. The definition is: when the frequency of the carrier wave is changed in accordance with the intensity of the signal, it is called frequency modulation. In frequency modulation, only the frequency of the carrier wave is changed in accordance with the signal. However, the amplitude of the carrier wave remains unchanged.

A.m. can be applied to a carrier of any frequency.

Amplitude modulation is where a constant carrier is modulated by the signal, so that the envelope of the carrier represents the signal. Frequency modulation is where a constant carrier is modulated by the signal, so that the frequency of the carrier represents the signal. Phase modulation is where a constant carrier is modulated by the signal, so that the phase angle of the carrier represents the carrier.

An AM (Amplitude Modulated) radio wave is one where a constant frequency carrier is modulated with a signal by varying the amplitude of the carrier. An FM (Frequency Modulated) radio wave is one where a constant amplitude carrier is modulated with a signal by varying the frequency of the carrier.

Following are the 3 parameter by which high Frequency carrier can be varied by low frequency intelligence signal 1) Amplitude 2) Phase 3) Frequency

FM is frequency modulation. The amplitude is held constant and the carrier frequency is varied. AM is amplitude modulation. The amplitude is varied and the carrier frequency is held constant.

to make available carrier frequency at the receiver

The process of changing the amplitude of the "carrier" so as to add information to it (modulation) doesn't change the frequency of the carrier. But it does create energy at two other new frequencies. The new frequencies are equal to (carrier frequency) plus and minus (the modulating frequency). These are referred to as the upper and lower sidebands. The upper sideband is an exact copy of the modulating signal, but with every component of it shifted up by an amount equal to the carrier frequency. The lower sideband is a mirror image of the upper sideband, with every frequency component in it reflected about the carrier frequency.

In FM the carrier is still present and the power is still there, at a constant amplitude at the transmitter. It's only the frequency of the carrier that alters, in time with the audio applied to it. The louder the sound the further the frequency shifts.

They are methods of transmitting signals (speech, music,data etc) on carrier frequencies. FM is Frequency Modulation where the carrier frequency is modified by the signal frequency. AM is Amplitude Modulation where the carrier amplitude (size) is modified by the signal

An amplitude modulated signal consists of a CW (continuous wave) at the carrier frequency, plus two components for each frequency in the modulating information. The two components are separated from the carrier by a frequency equal to the modulating frequency, with one above and one below the carrier frequency. Thus, the modulating information appears twice in the spectrum of the modulated signal.

Amplitude of the (high frequency) Carrier signal is varied with respect to low frequency of message signal is called amplitude modulation. Frequency of the carrier signal is varied with respect to low frequency of message signal is called frequency modulation.

High range of frequency that carries the message signals in transmission of data.after receiving the signals, the detector seperate the message and carrier .

Amplitude,frequency&phase of of a carrier may be varied by an intelligent signal.

A carrier frequency is a single radio frequency with steady amplitude. Alone, it would sound like silence on a receiver. This is the frequency that a radio receiver is tuned into. To be of use in communication, this carrier wave has to be changed in time with another signal (usually audio), called 'Modulation' It can be turned on and off using a Morse key. It can be changed by shifting the frequency, FM. It can be changed by varying the amplitude, AM. It can be changed by adding or subtracting audio to the carrier. Single Side Band. It can have data applied by shifting between two carrier frequencies. FSK. (Frequency shift keying.) It's called a carrier, because it is the carrier of information without necessarily being the information itself.

It is high frequency carrier signal and low frequency carrier signal in Am detector in the same way of wave form as a result of graph...

to shift the frequency of information signal ,at the frequency domain to a higher frequency ...so the information can be transmitted to the receiver .

Do you mean FDM or Frequency Division Multiplexing? If so, FDM is the division of a high frequency carrier into separate non-overlaping bands to be modulated by separate inputs. It's the modulation of several low frequency channels onto a high frequency carrier. Voice channels are low bandwidth inputs relative to the broadband carrier used to broadcast them.

the amount of frequency change in the carrier frequency per unit amplitude change in the message signal is the frequency sensitivity this term comes in the frequency moulation