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

Determine the efficiency of the transformer, 1.    A 230/1000V 50 Hz, singl...

1.    A 230/1000V 50 Hz, single phase transformer has the following test data: Open circuit test (L.V.) Primary voltage = 230V Primary current = 1.30 A Input power

Call instructions, Call Instructions Call instruction are used to call ...

Call Instructions Call instruction are used to call a  subroutine program in assembly language  procedure and functions are called  subroutines. There are two types  of calls i

What is capacitor, What is Capacitor -  A capacitor is an electrical d...

What is Capacitor -  A capacitor is an electrical device that is used to kept electrical energy.   -  The unit of capacitance is Farad. The symbol of capacitance is C.

L filters, L filters: An L filter contains two reactive elements that ...

L filters: An L filter contains two reactive elements that are one in series and one in parallel. T and π filters: Main article: Capacitor-input filter

Wireless and communication, With a maximum excess delay of and a chip durat...

With a maximum excess delay of and a chip duration of , the multipath components fall in delay bins. This means that we experience leakage of energy between chips and the channel i

Current flow through each resistor using mesh analysis, Find the current fl...

Find the current flow through each resistor using mesh analysis for the circuit below. Step : Determine the number of common nodes and reference node within the network

Define combinations of logic gates, Define Combinations of logic gates? ...

Define Combinations of logic gates? The Logic gates be able to combined to produce more complex functions. They can as well be combined to substitute one kind of gate for anoth

CAO, conditional branch instruction

conditional branch instruction

Metering technologies, Metering Technologies An electric meter or ener...

Metering Technologies An electric meter or energy meter is a device in which measures the amount of electrical energy supplied to customers of an electric supply company. Elec

Define resistance in lumped-circuit, Q. Define Resistance in lumped-circuit...

Q. Define Resistance in lumped-circuit? An ideal resistor is a circuit element with the property that the current through it is linearly proportional to the potential differenc

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