Abstract
The enhanced radiation performance of a dipole antenna backed by the split ring resonator-continuous wire pair array working in the H┴ excitation scenario is presented in this paper. The H┴ excitation scenario of the metamaterial is used to get zero reflection phase resulting in enhanced gain performance. The two layer meta-structure along with the dipole is fabricated on a low cost substrate of dielectric constant 4.4 and height 1mm. The reflection properties of the metamaterial structure and its effect on the radiation performance of the dipole antenna are presented in this paper.
Highlights
The theoretical invention of Vaselago followed by the practical demonstration of artificial magnetic plasma using an array of split ring resonators (SRR) by J.B Pendry has opened a dramatic change in electromagnetic research field [1,2]
The artificial dielectric property of periodic wire arrays has been used for getting directional radiation patterns from dipole antennas [4]
The SRR-wire pair array backed dipole antenna for improved radiation performance is presented in this paper
Summary
The theoretical invention of Vaselago followed by the practical demonstration of artificial magnetic plasma using an array of split ring resonators (SRR) by J.B Pendry has opened a dramatic change in electromagnetic research field [1,2]. The second scheme corresponds to the H┴ excitation, in which the applied magnetic field lies perpendicular to the axis of the SRR (parallel to the plane of the SRR) and the Electric field is oriented parallel to the slit This gives electric excitation of the SRR and the resultant transmission scenario will be a right handed slow wave resonant mode with reduced group velocity. This pass band occurs when the effective dielectric function of the split ring exceeds that of the wire medium. This peculiar reflection property makes this structure suitable for enhancing the radiation performance of an antenna around the resonant frequency
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