Prashant More

Savitribai Phule Pune University, Electrinocs and telecommunication, Faculty Member

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Papers by Prashant More

A Hexagonal-Shaped Fractal Antenna Array for Multiband Applications

IJCA Proceedings on Emerging …, 2012

A innovative geometry of fractal microstrip antenna has proposed which can be used for various mu... more A innovative geometry of fractal microstrip antenna has proposed which can be used for various multiband applications. This hexagonal fractal antenna structure has designed to produce multiband characteristics or to achieve miniaturizations. Multiple ...

$Fig. 1 Hexagonal microstrip antenna with four iterations where a =29 mm, b = 59mm, c = 23.1 d = 11.6mm, e =4.35mm. f = 8.7mm, g = 114 mm. 2. ANTENNA CHARACTERISTICS This antenna geometry is very useful in maintaining overall antenna conductivity and thereby electrical self-similarity can be easily achieved. Total length and width of an antenna is 59mm while the hexagon distance is 29mm.The hexagonal fractal antenna has designed with substrate height=1.6 mm, Loss tangent tan d¢ =0.019 and dielectric constant er=4.4 second iteration a small hexagonal shaped slot has made at it’s centre. In third iteration further miniaturization creates eight smaller hexagons around a central hexagon. Coaxial feeding has used for excitation of an antenna with probe diameter of 3.0mm_ Results has observed at centre frequency for 2.5GHz and around of it. Because of these smaller hexagons inside the radiator patch, it increase surface current length and thereby increases in total conductivity in the patch which results in strong radiation.$

$The first three iterations of the corner-fed hexagonal fractal dipole are measured and have been examined using the finite element method (FEM). The reflection coefficients (Return Loss) for the first three iterations of the hexagonal fractal antenna are plotted in Fig. 2. The Hexagonal fractal Antenna produced a high return loss compared to the Sierpinski Carpet Fractal Antenna.$

$Proper Return Loss has observed at third iteration, An ipproximate resonance frequency is selected for the proposed 1exagonal fractal antenna by using following equation. Emerging Trends in Computer Science and Information Technology -2012(ETCSIT2012) Proceedings published in International Journal of Computer Applications® (IJCA)$

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