Small Fractal Antennas

1 Problem
Antennas for hand-held communication devices are necessarily small, and typically use wavelengths
λ that are large compared to the size of the antenna. This typically implies that
the magnitude of the antenna reactance X (= imaginary part of the antenna impedance) is
large compared to that of its radiation resistance Rrad (which is related to the time-average
radiated power P and the peak current I0 at the feedpoint by P = I2
0Rrad/2), so that it is
challenging to build an effective impe ....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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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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Hi,
I need a report on fractal antennas specifying evolution, fractal antenna properties,comparison between fractal antennas and normal antennas, applications,advantages and diagrams. ....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 am pursuing engineering i want ppt for fractal anteenas for my branch e.c.e. ....etc

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I require latest thesis on fractal antennas including implementation in HFSS software.So please send me. ....etc

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Abstract:
This report will describe the theories and techniques for shrinking the size of an antenna through the use of fractals. Fractal antennas can obtain radiation pattern and input impedance similar to a longer antenna, yet take less area due to the many contours of the shape. Fractal antennas are a fairly new research area and are likely to have a promising future in many applications.
Keywords: Numerical integration, Moments Method.
INTRODUCTION
In today world of wireless communications, there has been an increa ....etc

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smart antenna for mobile communication ppt and report.
report font size 12 in times new roman. ....etc

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Fractal Antennas

There has been an ever-growing demand, in both the military as well as the commercial sectors, for antenna designs that possess the following highly desirable attributes: 1. Compact size 2. Low profile 3. Conformal 4. Multi-band or broadband

There are a variety of approaches that have been developed over the years, which can be utilized to achieve one or more of these design objectives. Recently, the possibility of developing antenna designs that exploit in some way the properties of fractals to achieve these goals, at le ....etc

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