Novel compact wide-band EBG structure based on tapered 1-D koch fractal patterns
Knowledge Area
ElectrónicaSponsors
This work was supported by Ministerio de Educación y Ciencia of Spain (TEC2010-21520-C04-04/TCM).Publication date
2011Bibliographic Citation
RUIZ, Juan de Dios, MARTÍNEZ VIVIENTE, FELIX L., HINOJOSA, Juan. Novel compact wide-band EBG structure based on tapered 1-D koch fractal patterns. IEEE Antennas and Wireless Propagation Letters , 10: 1104 - 1107, 2011. ISSN 1536-1225Peer review
SíKeywords
Electromagnetic bandgap (EBG)Wideband
Koch fractal
Periodic structures
Microstrip structures
Abstract
This letter presents a novel electromagnetic bandgap
(EBG) structure in microstrip technology based on nonuniform
one-dimensional (1-D) Koch fractal patterns whose
dimensions and period are modulated by a tapering function that
significantly improves the width of the bandgap. This wide
bandgap is achieved by maintaining the r/a (radius to period)
ratio of the Koch fractal patterns larger than 0.5 in the whole
structure. In the pass-band region, an improved flat response is
obtained by tapering the dimensions of the Koch fractal patterns
etched in the ground plane, together with the width of the
microstrip line, with a Kaiser distribution which also modulates
the periodicity of the fractals. A major consequence of this
modulation of the periodicity of the pattern is that this structure
is much more compact than a uniform conventional one.
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