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

Dpr preparation, DPR PREPARATION: 1.  Asset Management 2.  System O...

DPR PREPARATION: 1.  Asset Management 2.  System Operations and Despatch 3.  Field Operations 4.  Customer Processes 5.  Corporate Processes The details covered

Clc filter, CLC or π Filter The above diagram displays CLC or π ty...

CLC or π Filter The above diagram displays CLC or π type filter, which mainly contains a capacitor filter, followed through LC section. This filter offers a quite smooth o

Compute current in given the circuit configuration, Q. Consider the circuit...

Q. Consider the circuit configuration shown in Figure. Let V i = 1V, R 1 = 1000, R 2 = 2000, and A = 3. (a) Compute i 2 . (b) If R 1 changed to 500 , recompute i 2 .

Stack operation, Stack Operation Stack is a group of memory  locations...

Stack Operation Stack is a group of memory  locations which  are part of the  same read write memory  used for  storing  data  temporarily  during the execution of the  progra

Electricity and safety, explain appropriate first aid procedure to be follo...

explain appropriate first aid procedure to be followed in case of electric shock

Spectrum analyser, The spectrum analyser plots amplitude against frequency,...

The spectrum analyser plots amplitude against frequency, in other words it shows signals in the frequency domain. The spectrum analyser has the same trigger options as the oscillos

Explain the procedure for design of sequential circuits, Explain the Proced...

Explain the Procedure for design of Sequential Circuits? The design of the synchronous sequential circuit starts from a set of specifications and culminates in a logic diagram

Find the bandwidth and the power content of modulated signal, The normalize...

The normalized signal xn(t) has a bandwidth of 10 kHz and its power content is 0.5 W, while the carrier Ac cos 2πfct has a power content of 200W. Find the bandwidth and the power c

Right-handed coordinate system, The vectors we will use we be refered to ri...

The vectors we will use we be refered to right-handed Cartesian axes. Right handed means that the x,y,z axes are oriented in a particular way (which you must know). See diagrams

What is choke packet, a. Explain Choke packet. Describe implicit Congestion...

a. Explain Choke packet. Describe implicit Congestion Signalling and explicit Congestion Signalling in Congestion control. b. State routing parameters in packet switching networ

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