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

Amperes circuital law, Amperes Circuital Law The    observation    tha...

Amperes Circuital Law The    observation    that    magnetic    field strength varied with distance from the wire led to the following statement: 'If  the  magnetic  field

Basic operations of 8085 microprocessor , Basic Operations of 8085 Micropro...

Basic Operations of 8085 Microprocessor The 8085 microprocessor  performs followings  five  basic  operations . 1. Opcode Fetch :  Reading and decoding  operation code  of

Features of tariff policy, Features of tariff policy: For projects who...

Features of tariff policy: For projects whose tariff is determined by performance- based cost of service regulation, the advantages of decreased tariff after full depreciation

Digital signal processing, A DT LTI system has the following impulse respon...

A DT LTI system has the following impulse response: h(n)=[cos(pi/+delta(n)] u(n-3)u(n-2) (a) Find the system’s frequency response h(e^jw ). (b) Sketch the magnitude and phase respo

Explain the category of ceramics, Ceramics are good (A)  Insulators. ...

Ceramics are good (A)  Insulators.                 (B) Conductors. (C)  Superconductors.      (D) Semiconductors. Ans: Ceramics are good insulators.

What is a control word, What is a control word? It is a word kept in a ...

What is a control word? It is a word kept in a register (control register) used to control the operation of a program digital device.

Show process of power transmission and distribution, Q. Show Process of Pow...

Q. Show Process of Power transmission and distribution? The structure of a power system can be divided into generation (G), transmission, (T), and distribution (D) facilities,

Define capacitor construction, Define Capacitor Construction In its mo...

Define Capacitor Construction In its most elementary state a capacitor having of two metal plates separated by a certain distance d, in among the plates lies a dielectric mate

Diffrentiate between Brass and Bronze, Explain Brass and Bronze. Brass...

Explain Brass and Bronze. Brass - It is an alloy of copper and zinc with 60 percent copper and 40 percent zinc. Its electrical resistivity of Brass is 7.0 X 10 -8 ohm-m th

Squeeze castings, Squeeze Castings: Squeeze casting, also known as ...

Squeeze Castings: Squeeze casting, also known as liquid metal forging, is a combination of casting and forging process . The molten metal is poured into the bottom half

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