Explain demodulation of dsb, Electrical Engineering

Assignment Help:

Q. Explain Demodulation of DSB?

Demodulation of DSB SC AM signals requires a synchronous demodulator, which is also known as coherent or synchronous detector. That is, the demodulator must use a coherent phase reference. This is usually generated by means of a phase-locked loop (PLL), which forces the phase of the voltage-controlled oscillator to followthe phase of the reference signal, to demodulate the received signal. The need for such a device is a chief disadvantage of the DSB SC scheme.

963_Explain Demodulation of DSB.png

Figure shows the general configuration. A PLL is utilized to generate a phase-coherent carrier signal that is mixed with the received signal in a balanced modulator. The output of the balanced modulator is fed into a low-pass filter of bandwidth W, which passes the desired signal and rejects all signal (and noise) components above W Hz.


Related Discussions:- Explain demodulation of dsb

Show the characteristics of general - purpose capacitors, Q. Show the Chara...

Q. Show the Characteristics of General - Purpose Capacitors? The working voltage for a capacitor is generally specified by themanufacturer, thereby giving the maximum voltage t

Calculation of AT&C loss, how to make a matlab program for calculation of A...

how to make a matlab program for calculation of AT&C loss for perticular area

Determine the admittance of the parallel combination, Q. The voltage across...

Q. The voltage across a parallel combination of a 100- resistor and a 0.1-µF capacitor is 10 cos(5000t +30°) V. Determine the admittance of the parallel combination and find the c

Common source drain and transfer characteristics of a jfet, Q. Draw the com...

Q. Draw the common source drain and transfer characteristics of a JFET. How are they useful? The graph below shows  variation of the drain current Id as a function of the drain

Find the current flow through a resistor, Q. Find the current flow through ...

Q. Find the current flow through a resistor ? Consider the circuit shown in Figure (a). Reduce the portion of the circuit to the left of terminals a-b to (a) a Thévenin equival

What happen when negative bias applied to the gate of fet, Q. What happens ...

Q. What happens when a negative bias is applied to the gate of a FET? The result of applying a negative bias to the gate is to reach the saturation level at a lower level of V

#signal processing, how to break a signal into time components

how to break a signal into time components

Reversibility principle, The reversibility principle of electrical machines...

The reversibility principle of electrical machines states that an electrical machine can be used to operate either as a motor, converting electrical to mechanical energy, or as a g

Digital storage oscilloscope , Q. Explain digital Storage Oscilloscope (DSO...

Q. Explain digital Storage Oscilloscope (DSO) with neat diagram, (b) Give the difference between analog and digital storage oscilloscope.   Principle of operation : The availa

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd