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

Describe what you understand by offset voltage, a. Describe what you unders...

a. Describe what you understand by 'offset voltage' and 'offset current' of op-amp.  Discuss with a neat circuit diagram the method used for minimizing offset voltage and offset cu

The input output system - stepper motor , The Input Output System The ...

The Input Output System The input output  system provides  the physical  connection between  the equipment  and the PLC there are many  different kinds  of I/O cards  which ser

Compute the terminal voltage and current of each generator, Q. Three dc gen...

Q. Three dc generators are operating in parallel with excitations such that their external characteristics are almost straight lines over the working range with the following pairs

Calculate reactive power to be delivered by the capacitor, A single-phase s...

A single-phase source delivers 100 kW to a load operating at 0.8 lagging power factor. In order to improve the system's efficiency, power factor improvement (correction) is achieve

Obtain the current by means of mesh-current analysis, By means of mesh-curr...

By means of mesh-current analysis, obtain the current in the 10-V source and the voltage across the 10- resistor in the circuit of Example.

Shocly equation, I need to prove of shockly diode equation

I need to prove of shockly diode equation

Explain low-frequency response of rc coupled amplifier, Q. Explain low-freq...

Q. Explain low-frequency response of RC coupled amplifier. What are the reasons for reduction in gain at low frequencies? The RC coupled amplifier circuit contains capacit

Hall effect is associated with which material, Hall Effect is associated wi...

Hall Effect is associated with (A) Conductors. (B) Semiconductors. (C) Thermistors. (D)Solders. Ans: Hall Effect is associated with semiconductors.

Sui subtract immediate i instructions , SUI  Subtract Immediate I Instruct...

SUI  Subtract Immediate I Instructions The 8 bit  data  specified  in the  instruction  is directly  subtracted  from the  contents of  accumulator  and results  of operation

Working principle of a q meter, Q. Explain the working principle of a Q met...

Q. Explain the working principle of a Q meter. Also explain the factors that cause errors during a Q factor measurement. Ans.   Working Principle of Q Meter: the q meter is

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