Explain radio and television broadcasting, Electrical Engineering

Assignment Help:

Q. Explain Radio and Television Broadcasting?

Radio (AM and FM) and television broadcasting are the most familiar forms of communication via analog transmission systems. The receiver most commonly used in AM radio broadcasting is the superheterodyne receiver, shown in Figure, which consists of a radio-frequency (RF) tuned amplifier, mixer, local oscillator, intermediate frequency (IF) amplifier, envelope detector, audio-frequency amplifier, and a loudspeaker. Tuning at the desired radio frequency fc is achieved by a variable capacitor, which simultaneously tunes the RF amplifier and the frequency fLO of the local oscillator. Every AM radio signal, in a superheterodyne receiver, is converted to a common IF frequency of fIF = |fc - fLO| = 455 kHz, which allows the use of a single tuned IF amplifier for signals from any radio station in the frequency band. Matching the bandwidth of the transmitted signal, the IF amplifier is set to have a bandwidth of 10 kHz.

190_Explain Radio and Television Broadcasting.png


Related Discussions:- Explain radio and television broadcasting

Energy conservation, Energy Conservation Our country has a vast poten...

Energy Conservation Our country has a vast potential of energy saving. It is estimated in which measures for energy conservation and improving energy efficiency have the pote

Show the applications of a r-c coupled amplifier, Q. What are the applicati...

Q. What are the applications of a R-C coupled amplifier. The R-C coupled amplifiers have excellent audio fidelity over a wide range of frequency. Therefore, they are widely use

Management of Initiatives and Focus - KPI, Management of Initiatives and Fo...

Management of Initiatives and Focus - KPI In this era of fierce competition and to have the competitive edge, it is significant to conserve the material and human resources th

7 segment design, how to design 7 segment design using DSCH2 ?

how to design 7 segment design using DSCH2 ?

Diodes, How does a diode work! what is its main formulas?

How does a diode work! what is its main formulas?

Explain thermoplastic materials, Explain Thermoplastic materials. Ther...

Explain Thermoplastic materials. Thermoplastic materials: The properties of such plastic materials do not change considerably when they are melted and after that cooled and s

Hybrid meters, Hybrid Meters These meters have electronic measurement ...

Hybrid Meters These meters have electronic measurement circuits but show is by impulse counters/stepper motors. Accuracy is classically class 1.0 or 2.0 and commonly these met

Kpi for second stage implementation, KPI for Second Stage Implementation ...

KPI for Second Stage Implementation These KPIs deal along with the quality of the relationship among a supplier and a user (customer). They are significant to potential custom

How single stepping can be done in 8086, How single stepping can be done in...

How single stepping can be done in 8086? By setting the Trace Flag (TF) the 8086 goes to single-step mode. In this mode, after the implementation of every instruction s 8086 ge

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