pls give details of fiber antennas for free space communicTION ....etc

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Definition
Plasma antennas are radio frequency antennas that employ plasma as the guiding medium for electromagnetic radiation.

The concept is to use plasma discharge tubes as the antenna elements. When the tubes are energized, they become conductors, and can transmit and receive radio signals. When they are de-energised, they revert to non-conducting elements and do not reflect probing radio signals. Plasma antenna can be Steered electronically. Another feature of the plasma antenna is that it can be turned off rapidly, reducing ringing ....etc

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ppt on smart antennas for mobile communication ....etc

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Presented By:
Kulbir Singh1, Vinit Grewal2 and Rajiv Saxena3
1ECED, Thapar University, Patiala, India,
2 National Institute of Technology, Jalandhar, India
3Jay Pee Institute of Engineering and Technology, Raghogarh, Guna , M.P., India


Abstract “
Wireless applications, particularly with multiple resonances, put new demands on antennas pertaining to size, gain, efficiency, bandwidth, and more. One promising approach in this regard is to use fractal geometries to find the best distribution of currents within a volume to ....etc

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i want full details on seminar topics of emdebbed antenna ....etc

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Carbon Nanotube Antennas for Wireless Communications


Wireless System Evolution
Cellular:
2G – GPRS – 56-114 kbps
2.5G - EDGE – up to 400 kbps (Evolved EDGE – 1 Mbps)
3G:
HSPA – 7.2 Mbps (AT&T completed 2009)
HSPA+ 21/42 Mbps
LTE/WiMAX/IMT-Advanced – 100 Mbps and higher
LTE: 50 Mbps UL, 100 Mbps DL (deployment in 2012 by AT&T)


WLAN:
802.11n:
>100 Mbps in MAC
>3 bits/sec/Hz
802.11ac (< 6GHz) and 802.11ad (60 GHZ)
>500 Mbps ....etc

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1. Mobile Phone Signal Jammer for GSM, CDMA and 3G Networks with Prescheduled
2. Implementation of high sensitive GSM signal detector with audio visual alert indication
3. Implementation of model Radar target direction identifier with remote station alert system
4. Study of Parabolic Antenna for Direct to Home Communication
5. PC to Microcontroller Secured Data Communication using Fiber Optic communication
6. Ultrasonic Target Range Estimation using SONAR Technology
7. Implementation of data and voice communication from PC to GSM network ....etc

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Submitted by
NEERAJ MANI TRIPATHI


ABSTRACT
A detailed study on the various next generation nature inspired geometry antennas
i.e. fractal antennas is performed. Mainly four types of printed fractal antennas i.e.
Sierpinski Carpet, Quasi Koch Fractal, Mix fractal and Sierpinski Gasket Fractal
are designed using 3D FEM based solver (Ansoft HFSS), which are basically
variants of Patch antenna. Maximum iteration is three and these antennas are fed
using three basic techniques Transformer Feed, Inset Feed and ....etc

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Smart Antenna
ABSTRACT
One of the most rapidly developing areas of communications is Smart Antenna systems. This paper deals with the principle and working of smart antennas and the elegance of their applications in various fields such a 4G telephony system, best suitability of multi carrier modulations such as OFDMA etc. This paper mainly concentrates on use of smart antennas in mobile communications that enhances the capabilities of the mobile and cellular system such a faster bit rate, m ....etc

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fiber antenna for fibre free communication ppts
....etc

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