Novel Design of Electromagnetic Bandgap Using Fractal Geometry

A novel electromagnetic bandgap (EBG) structural design based on Fractal geometry is presented in this paper. These Fractals, which are the Sierpinski triangles, are arranged to repeat each 60° to produce the hexagonal unit cells. By changing the gap between two adjacent Sierpinski triangles inside...

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Bibliographic Details
Published in:International journal of antennas and propagation 2013-01, Vol.2013 (2013), p.1-8
Main Authors: Phuong, Huynh Nguyen Bao, Tuan, Tran Minh, Chien, Dao Ngoc
Format: Article
Language:English
Subjects:
Antennas
Arrays
Banded structure
Broadband
Fractal analysis
Fractal geometry
Triangles
Unit cell
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Summary:A novel electromagnetic bandgap (EBG) structural design based on Fractal geometry is presented in this paper. These Fractals, which are the Sierpinski triangles, are arranged to repeat each 60° to produce the hexagonal unit cells. By changing the gap between two adjacent Sierpinski triangles inside EBG unit cell, we can produce two EBG structures separately that have broadband and dual bandgap. By using the suspending microtrip method, two arrays 3 × 4 of EBG unit cells are utilized to investigate the bandgap of the EBG structures. The EBG operation bandwidth of the broadband structure is about 87% and of the dual-band structure is about 40% and 35% at the center bandgap frequencies, respectively. Moreover, a comparison between the broadband EBG and the conventional mushroom-like EBG has been done. Experimental results of the proposed design show good agreement in comparison with simulation results.
ISSN:1687-5869
1687-5877
DOI:10.1155/2013/162396