This document summarizes a presentation on transmission lines and antennas. It introduces transmission lines as two-wire cables that deliver energy from transmitters to antennas. It then defines antennas as devices that convert electric power to electromagnetic waves. The document outlines different types of transmission lines, their uses, propagation modes, smart antenna technology, antenna uses, propagation waves, advantages, and drawbacks.

2. PRESENTATION BY
apoorva k. Shetti
2bu09ec006
UNDER THE GUIDANCE OF
Lect. AMARJEETSINGH THAKUR
ANTENNA &
TRANSMISSION LIN
PRESENTED BY
M . HAMZA HUSSAIN
M . MUJTABA
PRESENTED TO
SIR HAMMAD MIR

3. CONTENTS
 INTRODUCTION
 TYPES OF TRANSSMISSION LINE
 USES OF TRANSMISSION LINE
 MODE OF SIGNAL PROPAGATION OF TRANSMISSION LINE
 SMART ANTENNA
 USES OF ANTENNA
 WAVE PROPAGATION
 ADVANTAGE
 ANTENNA DRAWBACK

4. INTRODUCTION
TRANSMISSION LINE
 It is two wire cable that is used to delivered energy transmitter
to antenna.
ANTENNA
 Antenna is electrical device which converts electric power
into electromagnetic waves or vice versa.

5. TYPES OF TRANSMISSION LINE
BALANCED LINE
Made up of two parallel conductors .
Insulating spacers may be use the wire separated .
CO-AXIAL CABLE
Outer plastic insulation .
Inner dielectric insulator .
Solid copper center conductor .

7. USES OF TRANSMISSION LINE
 To transmit energy .
 It acts as communication media .
 As resonant circuit at very high frequency .
 As measuring devices at high frequency .
 As aid to obtain impedance matching .

8. MODE OF SIGNAL PROPAGATION
TEM MODE

9. TE MODE AND TM MODE

10. What is SMART ANTENNA ?
 A smart antenna consists of an antenna array, that changes the
array pattern in response to signal environment to improve
the performance of a communication system.
Smart antenna analogy with human

11. THE AIM OF SMART ANTENNA SYSTEM
 To maximize the antenna gain in the desired
direction.
 To minimize the gain in directions of interferers.

12. USES OF ANTEENA
Used to transmit and receive the signal .
Used to transmit and receive radio wave .
They are easy to fix and carry .
Antenna is wide range usage .

13. WAVE OF PROPAGATION
Ground wave propagation . (surface)
Sky wave propagation .
Space wave propagation .

14. GROUND WAVE PROPAGATION .
The ground wave is a wave that guided along the surface
of the earth .

15. SKY WAVE PROPAGATION
Electromagnetic wave reach the receiving point after reflection
from the ionized upper region

16. SPACE WAVE PROPAGATION
Electromagnetic wave propagate from transmitting antenna
to the receiving antenna directly through the space .

17. ADVANTAGES OF ANTENNA
 Enhance coverage through Range extension.
 Fully controllable by software so less manual operations.
 Reduction in transmitted power.
 Provides high security.
 Improve system capacity.
 Increased bandwidth
 Increased the number of user .

18. Antenna’s Drawback
 Their transceivers are much more complex than traditional
base station transceivers.
 Expensive.
 Location.