Proceedings ArticleDOI
Design of 3D-EBG for L band applications
K. Praveen Kumar,K. Y. Bharath,M. V. Sai Harshith,H S P Gayathri,K. T. N Sashank,P. S. S HanimiReddy +5 more
- pp 530-533
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TLDR
In this paper, a three dimensional electromagnetic band gap structures is proposed, which exhibits universal band gaps, therefore do not allow propagation states in any direction, and its surface properties are such as (i) surface wave band gap (ii) in phase reflection (iii) Impedance and (iv) transmission coefficient are measured with the help of electromagnetic simulation software.Abstract:
Three dimensional electromagnetic band gap structures is proposed in present paper. This 3DEBG exhibits universal band gaps, therefore do not allow propagation states in any direction. In order to understand it's operating characteristics, its surface properties are such as (i) surface wave band gap (ii) In phase Reflection (iii) Impedance and (iv) Transmission coefficient are measured with the help of electromagnetic simulation software. The FEM based simulation software results are presented with detailed description. The proposed structure is operating at 1.9GHz and exhibiting with a surface wave suppression band gap of 240MHz and Inphase reflection band gap of 50MHz.read more
References
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High-impedance electromagnetic surfaces with a forbidden frequency band
TL;DR: In this paper, a new type of metallic structure has been developed that is characterized by having high surface impedance, which is analogous to a corrugated metal surface in which the corrugations have been folded up into lumped-circuit elements and distributed in a two-dimensional lattice.
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Reflection phase characterizations of the EBG ground plane for low profile wire antenna applications
Fan Yang,Yahya Rahmat-Samii +1 more
TL;DR: In this article, the authors focus on the reflection phase feature of EBG surfaces, which can be used to identify the input-match frequency band inside of which a low profile wire antenna exhibits a good return loss.
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Two-dimensional beam steering using an electrically tunable impedance surface
TL;DR: In this article, a periodic surface texture is used to alter the electromagnetic properties of a metal ground plane by covering the surface with varactor diodes, and a tunable impedance surface is built, in which an applied bias voltage controls the resonance frequency and the reflection phase.
Journal ArticleDOI
A tunable impedance surface performing as a reconfigurable beam steering reflector
Daniel F. Sievenpiper,James H. Schaffner,Robert Y. Loo,Gregory L. Tangonan,S. Ontiveros,R. Harold +5 more
TL;DR: In this paper, a reconfigurable microwave surface that performs as a new kind of beam steering reflector is described. The surface is textured with an array of tiny resonators, which provide a frequency-dependent surface impedance.
Journal ArticleDOI
Characterization of negative refraction with multilayered mushroom-type metamaterials at microwaves
TL;DR: In this paper, it was shown that the phase of the transmission coefficient decreases with the increasing incidence angle, resulting in the negative spatial shift of the transmitted wave, and the effect of introducing air gaps in between the metamaterial layers was investigated.