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

Electrical, do you have a place where I can draw the equation out ?

do you have a place where I can draw the equation out ?

Draw and explain the circuit of wein bridge oscillator, Q. Draw and explain...

Q. Draw and explain the circuit of Wein bridge oscillator. Obtain the expressions for the (i) frequency of oscillation and (ii) condition for oscillation. Will oscillat

Achieving reforms goals using gis applications, Achieving reforms goals usi...

Achieving reforms goals using GIS applications: GIS could help in achieving the above reforms goals through various applications: •  Creation of consumer database and cons

Permanent magnets, If a permanent magnet creates the flux in a magnetic cir...

If a permanent magnet creates the flux in a magnetic circuit, the flux exists without the need for a coil, so how does Amperes Law apply to this case?   In this case the flux is

Visible light communication project, I need a project in visible light comm...

I need a project in visible light communication with matlab design.

How to calculate new current and terminal voltage?, Q. Series generator hav...

Q. Series generator having a combined armature and field resistance of 0.4? is running at 1000 r.p.m. and delivering 5.5kw at terminal voltage of 110 V. If the speed is raised to 1

Variable frequency systems , Variable Frequency  Systems In this  sys...

Variable Frequency  Systems In this  systems the chopping period  T will varying but  either Ton is kept constant or T off kept constant. In  any case the off  time T off   w

States the superposition theorem, The superposition theorem states: 'In...

The superposition theorem states: 'In any network made up of linear resistances and having more than single source of e.m.f, the resultant current flowing in any branch is the

Show the r-1s complement, Q. Show the r-1s Complement? Subtract eve...

Q. Show the r-1s Complement? Subtract every digit of the number from r-1 (the radix of the system - 1)ex.             952 10

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