Abstract::
The demand for wireless mobile communications services is growing at an explosive rate, with the anticipation that communication to a mobile device anywhere on the globe at all times will be available in the near future.
An array of antennas mounted on vehicles, ships, aircraft, satellites, and base stations is expected to play an important role in fulfilling the increased demand of channel requirement for these services, as well as for the realization of the dream that a portable commun ....etc

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This paper provides a summary of the basic concepts of retrodirective antenna arrays. Originally this class of antenna was developed in the 1960s for direct satellite-to- ground transmission of high-power microwave energy. The recent explosive growth of mobile communications has, in the author s opinion, reopened the debate for alternative applications of retrodirective array techniques. Advances in microstrip antenna design coupled with the availability of integrated circuit amplifier and mixer components permit minimum-complexity retrodirect ....etc

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Design and analysis with low side lobes of Fractal Linear Array Antenna
Abstract
In this paper, the fractal concept is used in the linear array antenna design to obtain multiband operation and reduced size. MATLAB programming language version 7.0.1 is used to simulate the fractal linear array antenna and their radiation pattern. Fractal Cantor linear array antenna of array pattern of 101 has been designed at a frequency of 2700 MHz with uniform and non uniform amplitude distribution. The performance of this array has been s ....etc

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to get fractal antenna ppt, explanation and related topics page link page bellow

http://seminarsprojects.net/Thread-fractal-antennas

http://seminarsprojects.net/Thread-fractal-antennas-a-novel-miniaturization-technique-for-wireless-communications

http://seminarsprojects.net/Thread-fractal-antennas-design-characteristics-and-application

http://seminarsprojects.net/Thread-super-wideband-fractal-antenna-design ....etc

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To get full information or details of advantages and disadvantages of fractal antenna please have a look on the pages

http://seminarsprojects.net/Thread-fractal-antennas-design-characteristics-and-application?pid=47151

http://seminarsprojects.net/Thread-fractal-antennas

http://seminarsprojects.net/Thread-fractal-antennas-a-novel-miniaturization-technique-for-wireless-communications

http://seminarsprojects.net/Thread-fractal-antennas-design-characteristics-and-application

http://seminarsprojects.net/Thread-fractal-antennas

http://seminar ....etc

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Super wideband fractal antenna design

Abolfazl Azari
Member of Young Researchers Club
Isalmic Azad University of Gonabad
IRAN



Abstract

Fractals have very unique properties, therefore
in recent years, antenna designers use fractal geometry in
multi-band and broad-band antennas designing.
In this paper, I have achieved to a 40GHz super
wideband antenna with applying a fractal geometry to a
wire square loop antenna and choosing appropriate size
and location for feeding. Modelling and ....etc

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to get fractal antenna ppt, explanation and related topics page link page bellow

http://seminarsprojects.net/Thread-fractal-antennas

http://seminarsprojects.net/Thread-fractal-antennas-a-novel-miniaturization-technique-for-wireless-communications

http://seminarsprojects.net/Thread-fractal-antennas-design-characteristics-and-application

http://seminarsprojects.net/Thread-super-wideband-fractal-antenna-design ....etc

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I want to know the logic for finding follow in c. can you help me out with it?? ....etc

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A fractal antenna is an antenna that uses a fractal, self-similar design to maximize the length, or increase the perimeter (on inside sections or the outer structure), of material that can receive or transmit electromagnetic radiation within a given total surface area or volume.

Such fractal antennas are also referred to as multilevel and space filling curves, but the key aspect lies in their repetition of a motif over two or more scale sizes, or iterations. For this reason, fractal antennas are very compact, multiband or wideband, and ha ....etc

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i hope you can get more information about fractal antennaat pages
http://seminarsprojects.net/Thread-fractal-antennas
http://seminarsprojects.net/Thread-fractal-antenna
http://seminarsprojects.net/Thread-fractal-antennas-design-characteristics-and-application
http://seminarsprojects.net/Thread-super-wideband-fractal-antenna-design
http://seminarsprojects.net/Thread-fractal-antenna-report-and-presentation?pid=151474
http://seminarsprojects.net/Thread-fractal-antenna-systems
and if you feel any further query about the same please reply there ..
....etc

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