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A modulator modulates the carrier frequency, while a demodulator detects the modulation on the carrier wave and recovers the original lower frequency waveform at the destination. For many years the modulated carrier wave was converted to a radio signal. Now it is often an electrical signal which is sent down a teleohone line; the information is usually a set of pulses going between computers. When computers are connected to each other in a two-way conversation, the MOdulator and DEModulator are combined into a single device called a MODEM.
What else can I help you with?
Is there any special IC for amplitude modulation?
MC1496-AM modulator and demodulator chip -- shark
What is a demodulator?
The process of separating the original information or SIGNAL from the MODULATED CARRIER. In the case of AMPLITUDE or FREQUENCY MODULATION it involves a device, called a demodulator or detector, which produces a signal corresponding to the instantaneous changes in amplitude or frequency, respectively. This signal corresponds to the original modulating signal
What is square law demodulator in AM?
A square law demodulator is a device used to demodulate amplitude-modulated (AM) signals by exploiting the square-law characteristics of certain nonlinear components, such as diodes. In this process, the incoming AM signal is squared, resulting in a signal that contains both the original modulation and higher frequency components. After squaring, a low-pass filter is typically used to remove the unwanted higher frequencies, allowing the original audio or information signal to be recovered. This method is effective for demodulating AM signals, especially in simpler communication systems.
When signal amplitude is equal to carrier amplitude then modulation index is?
amplitude modulating signal
How are frequency and amplitude related?
They're not. The same amplitude can have high or low frequency, and the same frequency can have large or small amplitude.
Is there any special IC for amplitude modulation?
MC1496-AM modulator and demodulator chip -- shark
What is a demodulator?
The process of separating the original information or SIGNAL from the MODULATED CARRIER. In the case of AMPLITUDE or FREQUENCY MODULATION it involves a device, called a demodulator or detector, which produces a signal corresponding to the instantaneous changes in amplitude or frequency, respectively. This signal corresponds to the original modulating signal
What is amplitude demodulator?
(I am assuming you want to know what an "AM Demodulator" is, as follows) AM stands for Amplitude Modulation, perhaps the most basic kind of modulation of a radio carrier wave. Information, typically voice or music, is impressed on a radio carrier by simply varying the strength or 'amplitude' of the carrier (which is ordinarily at a much higher frequency than the information signal) versus time. An AM Demodulator, then, is a device which recovers the original signal, that is the voice or music, from the modulated carrier wave after it has been transmitted from the source to the receiver (which typically filters and amplifies the received signal before it is applied to the demodulator). The simplest AM Demodulator is a simple "diode", a 2 terminal semiconductor (or vacuum tube) device which, together with another filter, can convert the AM modulated carrier directly into the original form, discarding the carrier wave in the process. This is known as an "Envelope Detector". Other types of AM Demodulators exist, principally the "Product Detector". See the subtopic "AM Radio" in the Wikipedia entry for "Demodulation" for a little more information (it's not overly technical).
What is the more common abbreviation for a modulator-demodulator?
demodulator
What two words were combined to make up the modem?
modem (modulator + demodulator)
What does a modulator-demodulator stand for?
Modulator-Demodulator stands for modem
How demodulator works?
a demodulator sole function is to restore the original modulating signal. it works by removing the Carrier
What modem does?
Modulator/Demodulator
Am demodulator diode detector circuit?
demodulator circuit is a circuit which is used for remove all high frequency components from modulated signal.
What are the fetures of modem?
Modulator and Demodulator
What is the full meaning of the abbreviation modem?
Modem = modulator-demodulator, and is a tool for tweaking an analog signal so that it can be used in a digital device.
What is the full meaning of moderm?
modulator demodulator
