Click here:point_up_2:to get an answer to your question :writing_hand:a modulating signal is a square wave as shown in
A carrier signal is used to reduce the wavelength for efficient transmission and reception. Because the optimum antenna size is one-half or one-quarter of a wavelength, an audio frequency of 3000 Hz would need a wavelength of 100 km and a 25-kilometer antenna. Instead, using an FM carrier ...
Basically, what the modem does is take the digital signal from the computer and add it on top of an analog telephone signal (i.e., modulates it) so that it can be transferred through the telephone line. Since your modem sends information through a telephone line by modulating digital signa...
Modulation in physics isthe process of changing one or more properties of a periodic waveform, the carrier signal, with a modulating signal that typically contains information that is to be transmitted from one place to another. There are three types of modulation namely: Frequency modulation. Wha...
Modulation is the process of transmission of information such as images or videos on an electrical signal. Demodulation is defined as the process of extracting this information. Know what is modulation in detail.
Amplitude modulation, AM, is one of the most straightforward ways of modulating a radio signal or carrier. It can be achieved in a number of ways, but the simplest uses a single diode rectifier circuit.Other methods of demodulating an AM signal use synchronous techniques and provide much ...
1. Signal generator. 2. Used in electronic music to make tone changes. 3. Phase-locked loop. 4. Frequency synthesizer in communication equipment. Application circuit of VCO The local oscillator circuit of frequency band 6-12 in the VHF tuner of a color TV receiver is shown in the figure....
a digital and analogue signal to facilitate transmission. This usually means converting computer data into a medium suitable for transmission, such as telephone lines or radio waves. It’s also responsible for converting incoming analogue signals into a digitally legible format—known as demodulating....
Modulation is a term widely used in telecommunication or wireless networks. Modulation basically is used to convert information (digital bit stream or analog audio signal) in the form that can be physically transmitted over the air or cable. Information is referred as baseband or modulating signal....
A motivation for the use of quadrature amplitude modulation comes from the fact that a straight amplitude modulated signal, i.e. double sideband even with a suppressed carrier occupies twice the bandwidth of the modulating signal.This is very wasteful of the available frequency spectrum. Q...