Half-Annular Leaky-Wave Antenna With Suppressed Open Stopband: Design and Experimental Testing

Maksim Kuznetcov; D. Comite; Symon Podilchak; P. Burghignoli; A.  Galli; Alois P. Freundorfer; Yahia M. M. Antar; P. Baccarelli

doi:10.1109/LAWP.2023.3236614

Half-Annular Leaky-Wave Antenna With Suppressed Open Stopband: Design and Experimental Testing

Maksim Kuznetcov, D. Comite, Symon Podilchak, P. Burghignoli, A. Galli, Alois P. Freundorfer, Yahia M. M. Antar, P. Baccarelli

School of Engineering

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

Abstract

A new half-annular bull-eye leaky-wave antenna (LWA) design with suppressed open stopband (OSB) and integrated feeding is presented. The 2-D aperture offers a pencil beam with scanning through broadside and with stable gain values as a function of frequency. To achieve directional radiation, a TM 0 surface wave supported by a grounded dielectric slab is properly perturbed by means of a suitable planar-periodic double-strip aperture. In addition, the proposed structure offers improved performance and reduced design complexity with respect to previous LWAs having a non-suppressed OSB. Dispersion analyses based on a well-established method-of-moments analysis are also performed to characterize the fast spatial harmonic supported by the structure, and to determine the size, position, and periodicity of the strips needed for optimal OSB suppression. Simulations and experiments have been carried out to validate the antenna performance against the optimized unit cell. The fabricated planar-periodic LWA also provides continuous beam scanning from -35 ∘ to 40 ∘ , with a peak realized gain of 21 dBi.

Original language	English
Pages (from-to)	1-5
Journal	IEEE Antennas and Wireless Propagation Letters
Early online date	12 Jan 2023
DOIs	https://doi.org/10.1109/LAWP.2023.3236614
Publication status	E-pub ahead of print - 12 Jan 2023

Keywords

Antennas
Apertures
Attenuation
Impedance
Leaky-wave antenna
Slabs
Strips
Structural beams
open stopband
scanning

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10.1109/LAWP.2023.3236614

320231245 Accepted ManuscriptAccepted author manuscript, 3.36 MBLicence: Creative Commons: Attribution (CC-BY)

https://ieeexplore.ieee.org/document/10016248

Cite this

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title = "Half-Annular Leaky-Wave Antenna With Suppressed Open Stopband: Design and Experimental Testing",

abstract = "A new half-annular bull-eye leaky-wave antenna (LWA) design with suppressed open stopband (OSB) and integrated feeding is presented. The 2-D aperture offers a pencil beam with scanning through broadside and with stable gain values as a function of frequency. To achieve directional radiation, a TM 0 surface wave supported by a grounded dielectric slab is properly perturbed by means of a suitable planar-periodic double-strip aperture. In addition, the proposed structure offers improved performance and reduced design complexity with respect to previous LWAs having a non-suppressed OSB. Dispersion analyses based on a well-established method-of-moments analysis are also performed to characterize the fast spatial harmonic supported by the structure, and to determine the size, position, and periodicity of the strips needed for optimal OSB suppression. Simulations and experiments have been carried out to validate the antenna performance against the optimized unit cell. The fabricated planar-periodic LWA also provides continuous beam scanning from -35 ∘ to 40 ∘ , with a peak realized gain of 21 dBi.",

keywords = "Antennas, Apertures, Attenuation, Impedance, Leaky-wave antenna, Slabs, Strips, Structural beams, open stopband, scanning",

author = "Maksim Kuznetcov and D. Comite and Symon Podilchak and P. Burghignoli and A. Galli and Freundorfer, {Alois P.} and Antar, {Yahia M. M.} and P. Baccarelli",

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doi = "10.1109/LAWP.2023.3236614",

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T1 - Half-Annular Leaky-Wave Antenna With Suppressed Open Stopband: Design and Experimental Testing

AU - Kuznetcov, Maksim

AU - Comite, D.

AU - Podilchak, Symon

AU - Burghignoli, P.

AU - Galli, A.

AU - Freundorfer, Alois P.

AU - Antar, Yahia M. M.

AU - Baccarelli, P.

N1 - Publisher Copyright: Crown

PY - 2023/1/12

Y1 - 2023/1/12

N2 - A new half-annular bull-eye leaky-wave antenna (LWA) design with suppressed open stopband (OSB) and integrated feeding is presented. The 2-D aperture offers a pencil beam with scanning through broadside and with stable gain values as a function of frequency. To achieve directional radiation, a TM 0 surface wave supported by a grounded dielectric slab is properly perturbed by means of a suitable planar-periodic double-strip aperture. In addition, the proposed structure offers improved performance and reduced design complexity with respect to previous LWAs having a non-suppressed OSB. Dispersion analyses based on a well-established method-of-moments analysis are also performed to characterize the fast spatial harmonic supported by the structure, and to determine the size, position, and periodicity of the strips needed for optimal OSB suppression. Simulations and experiments have been carried out to validate the antenna performance against the optimized unit cell. The fabricated planar-periodic LWA also provides continuous beam scanning from -35 ∘ to 40 ∘ , with a peak realized gain of 21 dBi.

AB - A new half-annular bull-eye leaky-wave antenna (LWA) design with suppressed open stopband (OSB) and integrated feeding is presented. The 2-D aperture offers a pencil beam with scanning through broadside and with stable gain values as a function of frequency. To achieve directional radiation, a TM 0 surface wave supported by a grounded dielectric slab is properly perturbed by means of a suitable planar-periodic double-strip aperture. In addition, the proposed structure offers improved performance and reduced design complexity with respect to previous LWAs having a non-suppressed OSB. Dispersion analyses based on a well-established method-of-moments analysis are also performed to characterize the fast spatial harmonic supported by the structure, and to determine the size, position, and periodicity of the strips needed for optimal OSB suppression. Simulations and experiments have been carried out to validate the antenna performance against the optimized unit cell. The fabricated planar-periodic LWA also provides continuous beam scanning from -35 ∘ to 40 ∘ , with a peak realized gain of 21 dBi.

KW - Antennas

KW - Apertures

KW - Attenuation

KW - Impedance

KW - Leaky-wave antenna

KW - Slabs

KW - Strips

KW - Structural beams

KW - open stopband

KW - scanning

U2 - 10.1109/LAWP.2023.3236614

DO - 10.1109/LAWP.2023.3236614

M3 - Article

SP - 1

EP - 5

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

SN - 1536-1225

ER -

Half-Annular Leaky-Wave Antenna With Suppressed Open Stopband: Design and Experimental Testing

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Keywords

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