Impact analysis on distance variation between patch antenna and metamaterial

ABSTRACT Metamaterials are artificially engineered material having negative permittivity and permeability. Due to their negative constitutive parameters, metamaterials are capable of focusing incident electromagnetic energy called as beam focusing property. We have made use of beam focusing property...

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Bibliographic Details
Published in:Microwave and optical technology letters 2015-01, Vol.57 (1), p.178-183
Main Authors: Katiyar, Pankaj, Liza Wan Mahadi, Wan Nor
Format: Article
Language:English
Subjects:
Antennas
Beams (radiation)
CLS
Focusing
Gain
gain enhancement
metamaterial
Metamaterials
microstrip patch
Microwaves
Noise levels
Patch antennas
split ring resonator
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Summary:ABSTRACT Metamaterials are artificially engineered material having negative permittivity and permeability. Due to their negative constitutive parameters, metamaterials are capable of focusing incident electromagnetic energy called as beam focusing property. We have made use of beam focusing property of metamaterial to enhance antenna far‐field gain. We have also conducted experimental study by varying the distance between patch antenna and metamaterial array to determine optimum distance. The distance is varied in seven steps of 35 mm. The far‐field gain of antenna is increased by 4 dB when metamaterial is placed at 95 mm. The beamwidth of antenna reduces when loaded with metamaterial indicating beam sharpening. At 155 mm from patch antenna, the beamwidth reduces to 33.95° and starts increasing as metamaterial is moved further away. The resonance frequency and bandwidth of antenna follows alternate increase and decrease pattern as the distance of metamaterial is increased, however, the impact is negligible. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:178–183, 2015
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.28809