2. S.SINDHU PRIYA
B.Tech,
1ST
Year, ECE, ‘B’section,
PMU.

3. People live all over the world can connect
with
one another through

4. Now-a-days, in a single touch we can gain a
lot of information, Using this technology

5. For Mobile
Communication,
now-a-days we
use wireless
access
technology.

6. In recent years, There is a
development in wireless access
technology. Due to the
NUMBER OF USERS
THE ANTENNAS
are introduced .
Symbol for antennas

8.  The antennas convert radio frequency electrical
current into an electromagnetic wave.

9. HOW THE ANTENNAS WORK?HOW THE ANTENNAS WORK?

10. CONTINUES…CONTINUES…

11. 11
•limited allocated spectrum results in a
limit on capacity
• radio propagation environment and the
mobility of users
• give rise to signal fading and spreading
in time, space and frequency
• limited battery life at the mobile device
poses power
Why do We use smart
antennas?

12. In smart antennas we use
Multipath wave propagation.
To reduce data losing and fading
problems in signals.

13. TYPES OF SMART ANTENNAS
• Swit ched beam.
- It is single, with
a finite number of fixed
patterns.
• Adapt ive arr ay.
-It has an infinite
number of patterns for
mobile communication.

14.  Increase the data speed and reduce the error rate.
 Track multiple user.
 Reduce system complexity.
 Reduce interference.

15. Now-a-days, the smart
antennas have received
much attention among
people in the least few years.

16. World's smallest
Antenna.
Indian scientists develop world's
smallest antenna.