Koch fractal boundary patch over reactive impedance

This paper describes the enhancement of bandwidth and miniaturization for patch antennas. Introduction of fractal structure (Square Koch) over reactive impedance surface (RIS) is used to enhance impedance bandwidth while minimizing the patch size. Comparison has been made with those of a single-laye...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2013-04, Vol.44 (1), p.12005-4
Main Authors: Reddy V, Venkateshwar, Sarma, N V S N
Format: Article
Language:English
Subjects:
Antennas
Bandwidth
Bandwidths
Boundaries
Fractal analysis
Fractals
Gain
Impedance
Miniaturization
Patch antennas
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Description
Summary:This paper describes the enhancement of bandwidth and miniaturization for patch antennas. Introduction of fractal structure (Square Koch) over reactive impedance surface (RIS) is used to enhance impedance bandwidth while minimizing the patch size. Comparison has been made with those of a single-layer (sub1) antenna and the corresponding dual-layer (RIS) antenna. Approximately double the impedance bandwidth is achieved with the proposed RIS Square Koch antenna 1 when compared with Square Koch antenna 1without RIS. There is a 55 % reduction in the patch size. The simulated results indicate that the presented antennas provide gain of about 2.5dBi over the entire band of frequencies.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/44/1/012005