What do you mean by FM modulation?
Frequency Modulation (FM) is the encoding of information in a carrier wave by changing the instantaneous frequency of the wave. FM technology is widely used in the fields of computing, telecommunications, and signal processing.
What is modulation and demodulation in communication?
Modulation is the process of influencing data information on the carrier, while demodulation is the recovery of original information at the distant end of the carrier. A modem is an equipment that performs both modulation and demodulation.
How is FM decoded?
There are several common types of FM demodulators: The quadrature detector, which phase shifts the signal by 90 degrees and multiplies it with the unshifted version. The signal is fed into a PLL and the error signal is used as the demodulated signal. The most common is a Foster-Seeley discriminator.
What are the types of FM demodulation?
There are different types of FM demodulators including:
- Slope Detector.
- Foster-Seeley Discriminator.
- Ratio Detector.
- Pulse-Averaging Discriminators.
- Quadrature Detectors.
- Phase-Locked Loops.
What is modulation and demodulation Class 10?
– In modulation, the original message signal is mixed with a carrier wave whose parameters are required to be changed. In demodulation, the combination of carrier and message signal are separated from each other, to have an original information signal.
What are AM and FM in communication?
In AM, a radio wave is known as the “carrier” or “carrier wave” is modulated in amplitude by the signal that is to be transmitted. In FM, a radio wave is known as the “carrier” or “carrier wave” is modulated in frequency by the signal that is to be transmitted. The amplitude and phase remain the same.
What do you mean by demodulation?
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.