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

Define short lines, Define Short Lines? For short power lines (up to 50...

Define Short Lines? For short power lines (up to 50 miles; 80 km),  the effects of the shunt capacitance and leakage resistance are negligible. Hence the line may be represente

Magnetic circuits, develop and explain series and parallel magnetic circuit...

develop and explain series and parallel magnetic circuits?

Digital control system, Please suggest recent application of DCS WHICH I CA...

Please suggest recent application of DCS WHICH I CAN USE AS A TOPIC OF MY Ph.D.

Lift control unit, You are required to design and document  the hardware de...

You are required to design and document  the hardware design  for a 68HC12D60 based Lift Control Unit (LCU). This design includes  the Input/Output hardware for interfacing with  l

Aci add immediate with carry instruction, ACI  Add Immediate with Carry  ...

ACI  Add Immediate with Carry  Instruction Similar  to ADC instruction 8 bit  data specified  in the  instruction and Carry  are added to the contents  of the  accumulator and

Explain the working of a bootstrap sweep generator, Q. Use necessary circui...

Q. Use necessary circuit and waveforms to explain the working of a Bootstrap sweep generator The bootstrap circuit illustrated in figure given below is a commonly used method f

Explain types of addressing modes, Problem: a) Explain types of "Addres...

Problem: a) Explain types of "Addressing Modes". b) What is the difference between "Rotate" and "Swap" Operations? c) A computer spends a lot of time in moving data from

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