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

Compute the capacitance per unit length, Write a program implementing the c...

Write a program implementing the conjugate gradient method (un-preconditioned). Solve the matrix equation corresponding to a finite difference node-spacing, h = 0.02m in x and y di

Voltage, the relation between power

the relation between power

Determine thevinin and norton equivalent circuit, Design and simulate by us...

Design and simulate by using multisim software a series voltage regulator to supply 1A to a load at a constant voltage of 9V. The supply voltage to regulator is 15V±10%. The minimu

Forces and torques in magnetic-field systems, Q. Forces and torques in magn...

Q. Forces and torques in magnetic-field systems? We mentioned earlier that the greater ease of storing energy in magnetic fields largely accounts for the common use of electrom

How is segmentation implemented in typical microprocessors, How is segmenta...

How is segmentation implemented in typical microprocessors? The first advantage is as memory segmentation has is that only 16 bit registers are needed both to store segment bas

Explain a common emitter configuration without a feedback, Q. Explain a com...

Q. Explain a common emitter configuration without a feedback. A simple common emitter transistor amplifier--having no negative feedback--is not an ideal amplifier. This is beca

memory to register , Memory  to Register This  instruction is used to...

Memory  to Register This  instruction is used to copy the contents of a memory  locations whose  address is specified by the HL register  pair to any register. Before  using th

Circuit, i need to talk to expert asap.

i need to talk to expert asap.

Compare mosfet with jeft, Compare MOSFET with JEFT ? a. In enhancement ...

Compare MOSFET with JEFT ? a. In enhancement and depletion types of MOSFET, the transverse electric field induced across an insulating layer deposited on the semiconductor mate

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