Smart antennas for mobile communication
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S.SINDHU PRIYAB.Tech,
1ST Year, ECE, ‘B’section,PMU.
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People live all over the world can connect with
one another through
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Now-a-days, in a single touch we can gain a lot of information, Using this
technology
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For Mobile Communication, now-a-days we use wireless access technology.
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In recent years, There is a development in wireless access
technology. Due to the NUMBER OF USERSTHE ANTENNASare introduced .
Symbol for antennas
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The antennas convert radio frequency electrical current into an electromagnetic wave.
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HOW THE ANTENNAS WORK?HOW THE ANTENNAS WORK?
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CONTINUES…CONTINUES…
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•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?
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In smart antennas we use Multipath wave propagation.
To reduce data losing and fading problems in signals.
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TYPES OF SMART ANTENNAS
• Switched beam.
- It is single, with a finite number of fixed
patterns.
• Adaptive array.
-It has an infinite number of patterns for mobile communication.
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Increase the data speed and reduce the error rate. Track multiple user. Reduce system complexity. Reduce interference.
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Now-a-days, the smart antennas have received much attention among people in the least few years.
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World's smallest Antenna.
Indian scientists develop world's smallest antenna.
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