Demodulators for FM, Electrical Engineering

Assignment Help:

Demodulators for FM

Figure  shows a block diagram of a general FM demodulator, which is implemented by generating an AM signal whose amplitude is proportional to the instantaneous frequency of the FM signal, and then using an AM demodulator to recover the message signal. Transforming the FM signal into an AM signal can be achieved by passing the FM signal through an LTI system whose frequency response is nearly a straight line in the frequency band of the FM signal.

FM demodulators mainly fall into two categories: frequency discriminators and locked-loop demodulators. While both give the same performance for relatively high signal levels, locked- loop demodulators provide better performance than the discriminator when signal levels are low and noise is a problem. The discriminator produces an output voltage proportional to the frequency variations that occur in the FMsignal at its input. Locked-loop demodulators are more cost-efficient when implemented in IC form.

1654_Demodulators for FM.png


Related Discussions:- Demodulators for FM

Superposition theorem, how do you work it out if there are 3 sources in par...

how do you work it out if there are 3 sources in parallel?

Write short notes on the stability factor of biasing circuit, Q. Write shor...

Q. Write short notes on the Stability Factor of Biasing circuits. The degree of success achieved in stabilizing Ic in the face of variations in Ico is expressed in terms of sta

Operation of an integrating circuit, Q. What is the principle of operation ...

Q. What is the principle of operation of an integrating circuit? The RC integrator is typically a series RC circuit that uses the capacitor to develop its output. Since voltage

What is programmable interrupt controller, What is programmable interrupt c...

What is programmable interrupt controller? The Programmable interrupt controller is used when several I/O devices transfer datausing interrupt and they are connected to the sam

Explain inductorless filters, Q. Explain Inductorless Filters Inductorl...

Q. Explain Inductorless Filters Inductorless (Active) Filters Filters (used to pass or eliminate certain frequency components of a signal) that are suitable for IC fabricati

The electrical circuit, Normal 0 false false false EN-U...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Give the properties and application of glass, Give the properties and appli...

Give the properties and application of glass. Glass - It is an inorganic material made by the fusion of various metallic oxides. The properties of glass are as - Glass is

Define lines parameters, Define Lines Parameters In power system analys...

Define Lines Parameters In power system analysis, the parameters of interest when modelling power lines are:  inductance, capacitance, series resistance and leakage resistance.

Total harmonic distortion, The site 450 kVA load is actually a three-phase,...

The site 450 kVA load is actually a three-phase, six pulse thyristor rectifier feeding a dc bus. Assuming that the voltage waveform at the site 11 kV bus is purely sinusoidal, calc

For sign flag , For Sign Flag  CP ( Call on plus ) CM (Call on minus ...

For Sign Flag  CP ( Call on plus ) CM (Call on minus ) Instruction CP call  the subroutine  from the  specified  memory  location if  sign flag is not set or reset( S=0)

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