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

What do you mean by companding, Q. What do you mean by Companding? In o...

Q. What do you mean by Companding? In order to lower the crest factor of a waveform, so as to produce better performance, a process known as companding is used. It works like a

Inference rules of explanation system, Inference Rules of Explanation syste...

Inference Rules of Explanation system How an Explanation System might work where questions like how or why are dealt with. Inference Rules use an if-statement and a then-statem

Energy stored in the coil, The term representing the energy stored in the c...

The term representing the energy stored in the coil may be written in terms of the inductance of the coil as... The energy stored in the coil increases with the square of t

Digital modulation using matlab, hi I want the code of digital modulation i...

hi I want the code of digital modulation in matlab with inputs binary bit stream and M-ar

Name the materials used in case of solder, Name the materials used in case ...

Name the materials used in case of Solder and give reasons. Solder : For soft solders tin, lead (in 50-50 ratio) alloy and for hard solders copper- zinc and silver alloy

Working of microprocessor control, Q. Working of Microprocessor Control? ...

Q. Working of Microprocessor Control? The microprocessor, which has rapidly become a key component in digital control systems, and its associated circuits function as the digit

Hardware requirement - gis technology, Hardware Requirement- Se...

Hardware Requirement- Server of adequate sizing for enterprise-wide deployment for storing maps and geospatial data. Application server and web server. Desktops

Explain multimedia extensions technology, Explain MMX Technology. Mult...

Explain MMX Technology. Multimedia extensions technology adds 57 newly instructions to the instruction set of the Pentium - 4 microprocessors. The Multimedia extensions techno

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