FUNDAMENTAL OF COMMUNICATION SYSTEM B.TECH 6TH …
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LABORATORY MANUAL
FUNDAMENTAL OF COMMUNICATION SYSTEM
B.TECH
6TH SEMESTER
DEPARTMENT OF ELECTRICAL ENGINEERING
JHARKHAND RAI UNIVERSITY
KAMRE, RANCHI
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LIST OF EXPERIMENTS
1. To implement Amplitude modulation & verify it.
2. To implement Amplitude demodulation & verify it.
3. To implement Frequency modulation & verify it.
4. To implement Frequency demodulation & verify it.
5. To implement Pulse Amplitude modulation & verify it.
6. To implement demodulation of PAM & verify it.
7. To implement Pulse Width modulation & verify it.
8. To demonstrate the different types of Antenna.
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Fundamental of Communication System Lab Manual
EXPERIMENT NO-8
AIM- To Demonstrate the different types of Antenna.
THEORY- An Antenna is a device which converts electric power into radio waves.It is used in radio transmitter or receiver.
Antenna can be classified into various ways:-
1)Isotropic
2)Monopole
3)Dipole
4)Yagi-Uda
5)Array-Antenna
6)Loop Antenna
7)Aperture Antenna
8)Travelling wave Antenna
Isotropic- An Isotropic antenna is a hypothetical antenna that radiates equal signal power in all directions.It is used to calculate the gain of real antenna.
Figure-Isotropic Antenna
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Fundamental of Communication System Lab Manual
Monopole - consists of a single radiating element such as metal rod.It is used as non-directional antennas in HF,VHF & UHF bands.
Figure-Monopole Antenna
Dipole – consists of two symmetrical radiators such as metal wires.
Figure-Dipole Antenna
Yagi-Uda Antenna- consists of multiple half wave dipole elements in a line with a single driven element & multiple parasitic elements.
Figure-Yagi-uda Antenna
Array Antenna- consists of multiple antennas working as a single antenna.They consists of arrays of identical driven element.
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Fundamental of Communication System Lab Manual
Figure-Array Antenna
Loop Antenna- consists of a loop or coil or wire.Loops with circumference of a wavelength or larger act similarly to dipole antennas.Loops small in a comparison to a wavelength act differently.
Figure- Loop antenna
Aperture Antenna- Aperture antennas are the main type of directional antennas used at microwave frequencies.They consists of small dipole or loop antenna.
Figure-Aperture Antenna
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Fundamental of Communication System Lab Manual
Travelling wave Antenna- They are non-resonant.So they have inherently broad bandwidth.
Figure-Travelling wave Antenna
RESULT : The types of Antenna has been demonstrated.
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