Antenna- Transmitting Antenna - Receiving Antenna - Antenna types - Dipole- Yagi uda - Parabolic - Slotted Antenna - Helical - Microstrip antenna - Radiation Merchnism - Applications of Antenna

1. Antenna & its Types
By
T.Jayachandran/ECE
Nandha Engineering College

2. Objectives
 Describe Antenna
 State the types & applications of Antenna

3. Introduction
 An antenna is an electrical device which
converts electric currents into radio waves,
and vice versa. It is usually used with a radio
transmitter or radio receiver.
 In transmission, a radio transmitter applies an
oscillating radio frequency electric current to
the antenna's terminals, and the antenna
radiates the energy from the current as
electromagnetic waves (radio waves).

4. Introduction
 Transmitting Antenna
 Receiving Antenna:

5. ANTENNA APPLICATIONS
They are used in systems such as
 Radio broadcasting
 Broadcast television
 Two-way radio
 Communication receivers
 Radar
 Cell phones
 Satellite communications.

6. Quarter-wave whip antenna on
an FM radio for 88-108 MHz
Rubber Ducky
antenna on UHF
446 MHz walkie
talkie with rubber cover
removed.

7. Yagi-Uda television antenna
47-68 MHz
Log-periodic antenna covering 140-470 MHz

8. parabolic dish antenna
Parabolic Reflector Dish Antenna
Parabolic antenna/ Microwave antenn
/point to point antenna

9. Slotted /
Sectored
antenna

10. Horn antenna

11. Printed antenna

12. Dipole

13. Radiation Mechanism