Radially Periodic Leaky-Wave Antenna for Bessel-Beam Generation over a Wide Frequency Range

Davide Comite; Walter Fuscaldo; Symon K. Podilchak; Pascual D. Hilario Re; Victoria Gomez-Guillamon Buendia; Paolo Burghignoli; Paolo Baccarelli; Alessandro Galli

doi:10.1109/TAP.2018.2823862

Radially Periodic Leaky-Wave Antenna for Bessel-Beam Generation over a Wide Frequency Range

Davide Comite
, Walter Fuscaldo
, Symon K. Podilchak
, Pascual D. Hilario Re
, Victoria Gomez-Guillamon Buendia
, Paolo Burghignoli
, Paolo Baccarelli
, Alessandro Galli

Research output: Contribution to journal › Article › peer-review

74 Citations (Scopus)

240 Downloads (Pure)

Abstract

A radially periodic 2-D leaky-wave (LW) antenna is studied for the generation of zeroth-order Bessel beams within a limited spatial region and over a wide-frequency range. The antenna design is wideband and based on an annular metal strip grating placed on the top of a grounded dielectric slab, supporting a cylindrical leaky wave (CLW) with a fast backward spatial harmonic. The focusing capabilities of the relevant LW aperture fields are investigated over the considered frequency range (15-21 GHz), in conjunction with the dispersion analysis of the optimized structure, which is developed by means of an efficient in-house method of moments code. Full-wave simulations using a commercial tool including a simple coaxial feeder are presented and discussed, demonstrating the desired wideband operation. The antenna design is validated by means of measurements performed on a manufactured prototype, considering different frequencies and components of the electric field within the nondiffracting range of the system. The proposed design represents an attractive simple and low-cost solution potentially able to generate arbitrary-order Bessel beams at microwaves as well as in the millimeter-wave and terahertz frequency regions.

Original language	English
Pages (from-to)	2828-2843
Number of pages	16
Journal	IEEE Transactions on Antennas and Propagation
Volume	66
Issue number	6
Early online date	6 Apr 2018
DOIs	https://doi.org/10.1109/TAP.2018.2823862
Publication status	Published - Jun 2018

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title = "Radially Periodic Leaky-Wave Antenna for Bessel-Beam Generation over a Wide Frequency Range",

abstract = "A radially periodic 2-D leaky-wave (LW) antenna is studied for the generation of zeroth-order Bessel beams within a limited spatial region and over a wide-frequency range. The antenna design is wideband and based on an annular metal strip grating placed on the top of a grounded dielectric slab, supporting a cylindrical leaky wave (CLW) with a fast backward spatial harmonic. The focusing capabilities of the relevant LW aperture fields are investigated over the considered frequency range (15-21 GHz), in conjunction with the dispersion analysis of the optimized structure, which is developed by means of an efficient in-house method of moments code. Full-wave simulations using a commercial tool including a simple coaxial feeder are presented and discussed, demonstrating the desired wideband operation. The antenna design is validated by means of measurements performed on a manufactured prototype, considering different frequencies and components of the electric field within the nondiffracting range of the system. The proposed design represents an attractive simple and low-cost solution potentially able to generate arbitrary-order Bessel beams at microwaves as well as in the millimeter-wave and terahertz frequency regions.",

author = "Davide Comite and Walter Fuscaldo and Podilchak, \{Symon K.\} and \{Hilario Re\}, \{Pascual D.\} and \{Gomez-Guillamon Buendia\}, Victoria and Paolo Burghignoli and Paolo Baccarelli and Alessandro Galli",

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AU - Comite, Davide

AU - Fuscaldo, Walter

AU - Podilchak, Symon K.

AU - Hilario Re, Pascual D.

AU - Gomez-Guillamon Buendia, Victoria

AU - Burghignoli, Paolo

AU - Baccarelli, Paolo

AU - Galli, Alessandro

PY - 2018/6

Y1 - 2018/6

N2 - A radially periodic 2-D leaky-wave (LW) antenna is studied for the generation of zeroth-order Bessel beams within a limited spatial region and over a wide-frequency range. The antenna design is wideband and based on an annular metal strip grating placed on the top of a grounded dielectric slab, supporting a cylindrical leaky wave (CLW) with a fast backward spatial harmonic. The focusing capabilities of the relevant LW aperture fields are investigated over the considered frequency range (15-21 GHz), in conjunction with the dispersion analysis of the optimized structure, which is developed by means of an efficient in-house method of moments code. Full-wave simulations using a commercial tool including a simple coaxial feeder are presented and discussed, demonstrating the desired wideband operation. The antenna design is validated by means of measurements performed on a manufactured prototype, considering different frequencies and components of the electric field within the nondiffracting range of the system. The proposed design represents an attractive simple and low-cost solution potentially able to generate arbitrary-order Bessel beams at microwaves as well as in the millimeter-wave and terahertz frequency regions.

AB - A radially periodic 2-D leaky-wave (LW) antenna is studied for the generation of zeroth-order Bessel beams within a limited spatial region and over a wide-frequency range. The antenna design is wideband and based on an annular metal strip grating placed on the top of a grounded dielectric slab, supporting a cylindrical leaky wave (CLW) with a fast backward spatial harmonic. The focusing capabilities of the relevant LW aperture fields are investigated over the considered frequency range (15-21 GHz), in conjunction with the dispersion analysis of the optimized structure, which is developed by means of an efficient in-house method of moments code. Full-wave simulations using a commercial tool including a simple coaxial feeder are presented and discussed, demonstrating the desired wideband operation. The antenna design is validated by means of measurements performed on a manufactured prototype, considering different frequencies and components of the electric field within the nondiffracting range of the system. The proposed design represents an attractive simple and low-cost solution potentially able to generate arbitrary-order Bessel beams at microwaves as well as in the millimeter-wave and terahertz frequency regions.

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DO - 10.1109/TAP.2018.2823862

M3 - Article

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EP - 2843

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

IS - 6

ER -

Radially Periodic Leaky-Wave Antenna for Bessel-Beam Generation over a Wide Frequency Range

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