Omnidirectional dielectric electromagnetic band gap antenna for base station of wireless network

Freytag, L.; Pointereau, Elisa; Jecko, Bernard

doi:10.1109/aps.2004.1329795

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…windows of leaky-wave operation, with limited directivity and strict requirements on the transverse thickness of the rods, which cannot be made too thin with respect to the wavelength. A proper periodic corrugation of cylindrical dielectric rods supporting surface modes has been proposed in [19], [20] in order to perturb the surface guided modes into leaky-waves, but this configuration requires the surface mode to be properly bounded around the dielectric shell, so that the perturbation takes effect. Again this requires its transverse cross section to be sufficiently thick to bound energy near its surface.…”

Section: Leaky-wave Dispersionmentioning

confidence: 99%

Theory and Simulations of a Conformal Omni- Directional Subwavelength Metamaterial Leaky-Wave Antenna

Alù

Bilotti²,

Engheta

et al. 2007

IEEE Trans. Antennas Propagat.

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The detailed theory of a single subwavelength conformal radiator that exploits the resonant properties of thin cylindrical metamaterial shells supporting leaky waves is presented. It is shown and reviewed analytically and numerically how a circularly symmetric resonant leaky mode may be supported by a properly designed subwavelength homogenous cylindrical shell of low negative permittivity. Some physical insights are provided and numerical simulations with a feed point, considering also the finiteness of the antenna in the longitudinal direction, are presented and discussed. Moreover, possibilities and limitations of a practical realization of this setup are mentioned, considering in details the possible anisotropies in the metamaterials. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. Abstract-The detailed theory of a single subwavelength conformal radiator that exploits the resonant properties of thin cylindrical metamaterial shells supporting leaky waves is presented. It is shown and reviewed analytically and numerically how a circularly symmetric resonant leaky mode may be supported by a properly designed subwavelength homogenous cylindrical shell of low negative permittivity. Some physical insights are provided and numerical simulations with a feed point, considering also the finiteness of the antenna in the longitudinal direction, are presented and discussed. Moreover, possibilities and limitations of a practical realization of this setup are mentioned, considering in details the possible anisotropies in the metamaterials.

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Section: Leaky-wave Dispersionmentioning

confidence: 99%

Theory and Simulations of a Conformal Omni- Directional Subwavelength Metamaterial Leaky-Wave Antenna

Alù

Bilotti²,

Engheta

et al. 2007

IEEE Trans. Antennas Propagat.

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“…For example, planar EBG structures have been used to conceive highly directive [2,3] or sectoral [4,5] antennas. Cylindrical EBG structures have also been used to design other types of antennas like omnidirectional ones [6,7]. In a recent article, we presented a multibeam antenna, based on a cylindrical array of EBG sectoral antennas and dedicated for telecommunication applications [8].…”

Section: Introductionmentioning

confidence: 99%

Cylindrical array of EBG sectoral antennas for Radar applications

Chreim

Hajj

Monédière

et al. 2010

2010 International Workshop on Antenna Technology (iWAT)

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This paper presents an additional work on a previous EBG cylindrical antenna in order to conceive a steerable antenna for Radar applications which require the coverage of the horizontal plane with a high gain (higher than 25 dB). The already designed antenna provides 18 beams with 15 dBi of maximum directivity. That is why some modifications were applied on it in order to obtain more beams in the horizontal plane (30 beams) and increase its gain. Moreover, the theories of cylindrical arrays in the horizontal plane and the multi-feed in the vertical plane are used which allows further gain improvement and reaching the required one.

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“…For example, planar EBG structures have been used to conceive highly directive [2], [3] or sectoral [4], [5] antennas. Cylindrical EBG structures have also been used to conceive other types of antennas, like omnidirectional ones [6], [7]. Generally, this type of antenna is composed of a thin metallic core acting as a ground plane and surrounded by a cylindrical EBG structure.…”

Section: Introductionmentioning

confidence: 99%

Multibeam Antenna for Telecommunications Networks Using Cylindrical EBG Structure

Chreim

Hajj

Arnaud

et al. 2009

Antennas Wirel. Propag. Lett.

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International audienceWe present in this letter the study of a multibeam antenna for telecommunication networks by using cylindrical electromagnetic band-gap (EBG) structures. The EBG structure behaves as a partially reflecting surface (PRS) and enhances the directivity of a simple radiating source. We begin by presenting the principle of the multibeam antenna, and then we present a first version, conceived to operate in WiMAX band [5.45.7] GHz. Simulation results of this antenna will show us that the strong mutual coupling between the different excitation sources of the EBG structure badly influences its performance. In order to reduce the mutual coupling, metallic walls are inserted between the excitation sources. Moreover, excitation sources have been changed to improve the radiation performance of the antenna. A prototype of the final antenna is fabricated to validate our simulation results, and the measurements results are compared to the simulated ones

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Omnidirectional dielectric electromagnetic band gap antenna for base station of wireless network

Cited by 12 publications

References 3 publications

Theory and Simulations of a Conformal Omni- Directional Subwavelength Metamaterial Leaky-Wave Antenna

Theory and Simulations of a Conformal Omni- Directional Subwavelength Metamaterial Leaky-Wave Antenna

Cylindrical array of EBG sectoral antennas for Radar applications

Multibeam Antenna for Telecommunications Networks Using Cylindrical EBG Structure

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