Journal Article10.1109/LAWP.2017.2718112
Omnidirectional 2-D Leaky-Wave Antennas With Reconfigurable Polarization
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TL;DR: In this article, a two-dimensional leaky-wave antennas with polarization-reconfigurable omnidirectional conical beam is proposed, where the antenna cavity is bounded by an annular, locally periodic metal partially reflective surface, and is loaded by a dielectric or a wire medium slab in order to suppress undesired radiation from the fundamental quasi-TEM mode.
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Abstract: Fabry-Perot cavity two-dimensional leaky-wave antennas with polarization-reconfigurable omnidirectional conical beam are proposed. The antenna cavity is bounded by an annular, locally periodic metal partially reflective surface, and is loaded by a dielectric or a wire-medium slab in order to suppress undesired radiation from the fundamental quasi-TEM mode. A suitable design of the partially reflective surface and of the loading slab, based on a dispersion analysis of the linearized structure, allows for equalizing the phase and attenuation constants of the first higher order TM
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and TE
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leaky modes around a given frequency. Omnidirectional beams with full polarization reconfigurability are then achieved through independent excitation of such modes with a pair of azimuthally independent sources. Preliminary designs, aimed at producing a conical beam with circular polarization, are presented and optimized with state-of-art simulation software.
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Citations
Resonant Cavity Antennas for 5G Communication Systems: A Review
TL;DR: The main focus of this paper is to discuss primarily the antenna gain and bandwidth of wideband high-gain antennas with different functionalities required for the next generation of wireless communication.
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Planar Antenna Design for Omnidirectional Conical Radiation Through Cylindrical Leaky Waves
Davide Comite,Victoria Gomez-Guillamon Buendia,Symon K. Podilchak,David Di Ruscio,Paolo Baccarelli,Paolo Burghignoli,Alessandro Galli +6 more
TL;DR: In this paper, an annular periodic leaky-wave antenna (LWA) fed by a simple azimuth-symmetric source is designed to generate a high-gain omnidirectional conical-beam pattern, which scans with frequency over a wide angular range.
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Wideband Array-Fed Fabry-Perot Cavity Antenna for 2-D Beam Steering
Davide Comite,Symon K. Podilchak,Maksim Kuznetcov,Victoria Gomez-Guillamon Buendia,Paolo Burghignoli,Paolo Baccarelli,Alessandro Galli +6 more
TL;DR: In this article, a 2D Fabry-Perot structure based on a multilayer (ML) slab arrangement fed by a circular array of simple sources is proposed to suppress undesired radiation from the quasi-TEM mode.
2-D Beam Scanning With Cylindrical-Leaky-Wave-Enhanced Phased Arrays
TL;DR: In this article, a planar phased array with a conical element pattern (EP) with high directivity in elevation, obtained through the excitation of a dominant, weakly attenuated cylindrical TM leaky wave of azimuthal order $n = 0$ by means of a simple coaxial probe, is used to obtain a high-gain pencil beam continuously scanning in the 3D space without suffering gain losses.
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Spatial Multi-Polarized Leaky-Wave Antenna Based on Spoof Surface Plasmon Polaritons
TL;DR: In this article, a leaky-wave antenna (LWA) is proposed on the basis of an ultrathin spoof surface plasmonic (SSP) waveguide, which can convert SSP waves into spatial multi-polarized radiation waves.
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References
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320
2-D periodic leaky-wave Antennas-part II: slot design
TL;DR: In this paper, the far-field radiation patterns of a two-dimensional (2D) periodic slot leaky-wave antenna (LWA) are studied. And a comparison between the present periodic slot LWA and a 2-D periodic patch LWA discussed in Part I is given to show the advantages of the slot antenna for certain applications.
142
GA-Based Design of Multi-Ring Arrays With Omnidirectional Conical Beam Pattern
TL;DR: In this paper, an optimal design of single and multi-ring arrays with an omnidirectional conical beam by using a genetic algorithm (GA) was presented, where the design parameters to be optimized are ring radii, excitation phases and amplitudes, requiring that the excitations of all elements in the same ring have the same amplitude and periodic phase.
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New Toroidal Beam Antennas for WLAN Communications
TL;DR: The design of a number of new antennas that radiate linearly polarized toroidal beams is described, based on the use of a method of moments commercial software tool, which works at WLAN communication frequencies.
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