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

Explain block diagram of the system, Q. Explain Block diagram of the system...

Q. Explain Block diagram of the system? The block diagram is a pictorial representation of the equations of the system. Each block represents a mathematical operation, and the

Embedded systems design, You have been requested by your Senior Engineer to...

You have been requested by your Senior Engineer to design an Engine Control Unit (ECU) and prepare a report detailing your proposed solution. The client requires a design for a mic

Find the t-domain forced response in glc parallel circuit, Consider a GLC p...

Consider a GLC parallel circuit excited by i(t) = Ie st in the time domain. Assume no initial inductive current or capacitive voltage at t = 0. Draw the transformed network in the

Analog averaging system, Consider the analog averager where x(t) is the inp...

Consider the analog averager where x(t) is the input and y(t) is the output. (a)   Find the impulse response h(t) of the average.  Is this system causal? (b)   Let x(t)

Pneumatic circuit diagram, FIGURE shows a pneumatic circuit diagram used fo...

FIGURE shows a pneumatic circuit diagram used for air supply and exhaust in an automatic control system.  (a) Name all symbols (including pipelines) used in the system. (b) N

Applications of operational amplifiers, Q. Applications of operational ampl...

Q. Applications of operational amplifiers? An op amp along with a few external components (resistors and capacitors) is capable of performing many different operations-hence th

Interpret the assembly output of the lc - 3 compilers, Interpret the Assemb...

Interpret the Assembly Output of the LC - 3 Compilers Goals to understand the stack convention of the LC3 compiler: How the stack pointer and frame pointer are managed

Compute the efficiency of the motor, Q. A 10-hp, 230-V dc shunt motor takes...

Q. A 10-hp, 230-V dc shunt motor takes a full- load line current of 40 A. The armature and field resistances are 0.25 and 230 , respectively. The total brush-contact drop is 2 V,

Total harmonic distortion, The site 450 kVA load is actually a three-phase,...

The site 450 kVA load is actually a three-phase, six pulse thyristor rectifier feeding a dc bus. Assuming that the voltage waveform at the site 11 kV bus is purely sinusoidal, calc

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