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How can a composite signal be decomposed into its individual frequencies?

Fourier analysis Frequency-domain graphs


Comparison of amplitude modulation and frequency modulation?

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.


When low frequency signals added to high frequency signal then the envelope signal will follow which signal?

the low frequency signal which is nothing but the message signalNeither. The envelope will be that of the difference beat frequency. To get the envelope to follow the low frequency input signal you need to mix (multiply) the two signals, not add them.


What signal has wider bandwidth sine wave with frequency 100HZor 200HZ?

The signal with a frequency of 200Hz has a wider bandwidth compared to a signal with a frequency of 100Hz. Bandwidth is determined by the range of frequencies present in a signal, so a higher-frequency signal will have more frequency components and thus a wider bandwidth.


What is the fuel injector solenoid energized by?

Fuel injector is energize by signal composed of pulsed voltage frequency increases as with rpm set by pcm


Why you convert FM signal to IF frequency?

Mix it with a local oscillator whose frequency is (the IF frequency) away from the frequency of the FM signal you're interested in.


Why the linear combination of a low frequency intelligence signal and a high frequency carrier signal is not effective as a radio transmission?

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


What is meant by zero phase frequency?

The zero phase frequency is the frequency at which the phase of the input signal and the output signal match.


Is The carrier frequency is usually lower than the modulating frequency?

when the frequency is low , energy will be obviously low. To increase the energy of the signal we need to increase the frequency. This is achieved by multiplying the message signal with the carrier signal (with high frequency).


What happens if we sample the signal at sampling frequency nearer to signal frequency?

If you sample at more than the Nyquist frequency (one half the signal frequency) you introduce an aliasing distortion, seen as sub harmonics.


What is the bandwidth of a signal composed of frequencies from 50 Hz to 500 Hz?

The bandwidth of a signal is the width of frequencies between the highest and the lowest frequency. So 500Hz - 50Hz = 450Hz bandwidth. AE7HD


What is signal modulation?

modulating signal is the message to be carried by the carrier signal.