What kind of filter is used to pass noise in DSBSC detection?

Low Pass Filter
In this process, the message signal can be extracted from DSBSC wave by multiplying it with a carrier, having the same frequency and the phase of the carrier used in DSBSC modulation. The resulting signal is then passed through a Low Pass Filter. Output of this filter is the desired message signal.

Which type of filter is used in demodulator?

The filter is usually an RC low-pass type but the filter function can sometimes be achieved by relying on the limited frequency response of the circuitry following the rectifier.

How do you demodulate DSBSC?

Demodulation. For DSBSC, Coherent Demodulation is done by multiplying the DSB-SC signal with the carrier signal (with the same phase as in the modulation process) just like the modulation process. This resultant signal is then passed through a low pass filter to produce a scaled version of the original message signal.

Why low pass filter is used in demodulator?

The capacitor and resistor form a low-pass filter to filter out the carrier frequency. Such a device is often used to demodulate AM radio signals because the envelope of the modulated signal is equivalent to the baseband signal.

What is non coherent detection?

Noncoherent Detection. With noncoherent detection, the carrier phase is not recovered at the receiver. Information is transmitted in amplitude and frequency only, not in the phase of the carrier.

What is the function of capacitor C5 in the demodulator circuit?

Resistors R3 and R4 are the load resistors and are bypassed by C3 and C4 to remove rf. C5 is the output coupling capacitor.

How the balanced DSBSC modulation technique works in the communication system?

In electronic communications, a balanced modulator is a circuit that produces double-sideband suppressed-carrier (DSBSC) signals: It suppresses the radio frequency carrier thus leaving the sum and difference frequencies at the output.

What is the purpose of a high pass filter in a demodulator?

A high-pass-filter-based FM demodulator is preceded by a limiter to prevent amplitude variations from contributing error to the demodulated signal. A phase-locked loop can be used to achieve high-performance FM demodulation.

Which is better DSBSC or SSB?

We can see that the SSB transmission does not suffer from the effect of power fading induced by fiber dispersion, while the DSB has a high tolerance to power fading, due to the low frequency of RF carrier [8] . The DSB has a better performance than SSB under short distance because of double sideband. …

What is the difference between coherent and non coherent detection?

Coherent systems means that the receiver need the phase information of the transmitter (the carrier phase) to recover the transmitted data at receiver side. In non coherent systems, the receiver do not need the phase information of the transmitter carrier to recover the signal.