Synthesis of Phased Cylindrical Arc Antenna Arrays

Rammal, Hussein; Olleik, Charif; Sabbah, Kamal; Rammal, M.; Vaudon, Patrick

doi:10.1155/2009/691625

Cited by 5 publications

(8 citation statements)

References 6 publications

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“…Many phase-only null synthesis techniques for antenna arrays proposed in the recent years [6][7][8][9][10][11][12][13][14][15][16][17][18] may be nowadays reconsidered for addressing the expected 5G requirements. In particular, a deterministic method for linear arrays is presented in [6], where the phase-only approach and the possibility to generate multiple close nulls are outlined.…”

Section: Related Workmentioning

confidence: 99%

“…In [11], a beamforming architecture based on neural networks is designed to introduce phase-only adaptive nulling in phased arrays. The synthesis of cylindrical arc antenna arrays controlled by the excitation phases is analyzed in [12], where the null steering capabilities are experimentally proved through a prototype consisting of microstrip patches. In [13], the authors propose a differential search optimization algorithm for linear arrays, which includes the phase-only control and wide null synthesis options.…”

Section: Related Workmentioning

confidence: 99%

“…Second, many of the proposed solutions are applicable just to specific configurations [6,8,9,[11][12][13][14]16], usually having a linear geometry. However, planar structures are expected to be used for 5G MTs and BSs [2], thus an algorithm capable to operate on conformal structures may be highly preferable.…”

Section: Related Workmentioning

confidence: 99%

See 2 more Smart Citations

Phase-Only Antenna Array Reconfigurability with Gaussian-Shaped Nulls for 5G Applications

Buttazzoni

Comisso

Ruzzier

et al. 2019

International Journal of Antennas and Propagation

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This paper presents a fast iterative method for the synthesis of linear and planar antenna arrays of arbitrary geometry that provides pattern reconfigurability for 5G applications. The method enables to generate wide null regions shaped according to a Gaussian distribution, which complies with recent measurements on millimeter-wave (mmWave) angular dispersion. A phase-only control approach is adopted by moving from the pattern provided by a uniformly excited array and iteratively modifying the sole phases of the excitations. This allows the simplification of the array feeding network, hence reducing the cost of realization of 5G base stations and mobile terminals. The proposed algorithm, which is based on the method of successive projections, relies on closed-form expressions for both the projectors and the null positions, thus allowing a fast computation of the excitation phases at each iteration. The effectiveness of the proposed solution is checked through numerical examples compliant with 5G mmWave scenarios and involving linear and concentric ring arrays.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Phase-Only Antenna Array Reconfigurability with Gaussian-Shaped Nulls for 5G Applications

Buttazzoni

Comisso

Ruzzier

et al. 2019

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…Wide‐angle main beam scanning (

\pm 60^{°}

) on a cylindrical conformal surface is achieved with optimization algorithm in Reference 17. In References 18 and 19, multiple main beam generation is achieved with iterative least‐square approach using cylindrical phased arrays. The above‐mentioned study summarizes that extensive research work is done using cylindrical phased array mainly for main beam scanning and recently in a few papers, 18,19 multiple beams generation is exhibited using cylindrical phased array.…”

Section: Introductionmentioning

confidence: 99%

“…In References 18 and 19, multiple main beam generation is achieved with iterative least‐square approach using cylindrical phased arrays. The above‐mentioned study summarizes that extensive research work is done using cylindrical phased array mainly for main beam scanning and recently in a few papers, 18,19 multiple beams generation is exhibited using cylindrical phased array. In almost all these works, least‐square approximation approach is used to calculate the array weights.…”

Section: Introductionmentioning

confidence: 99%

Cylindrical phased array with adaptive nulling using eigen‐correlation technique

Ullah

Munsif

Razzaq

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this research work, eigen‐correlation matrix based technique is developed for cylindrical antenna array to generate main beam and nulls simultaneously. The array complex weights (amplitude and phase) computed using the developed technique are used for single‐beamforming, multi‐beamforming, and beamforming with nulls steering simultaneously. The limitations of null steering range are investigated for different surface deformations of the cylindrical antenna array. The effects of surface deformations for different cylindrical radii on peak gain of main beam, half‐power beamwidth, first‐null beamwidth, and sidelobe level is also investigated. It is concluded that the developed eigen‐correlation matrix based technique for cylindrical antenna array can be used for desired main beam generation and nulls steering simultaneously. The MATLAB, CST, and measurement validation of eight elements microstrip cylindrical phased array for single/multi‐beams steering and adaptive nulling capability is demonstrated. This in turn makes the cylindrical phased array with adaptive nulling, a potential candidate suitable for use on fuselage portion of aircraft, airport surveillance radars, and mobile communication applications.

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Analysis by Asymptotic Boundary Conditions of Strip-Grated Dielectric Pipe Over Dielectric Rod With Wide Total Band-Gap as Multifrequency Cylindrical Leaky-Wave Antennas

Kehn

2022

IEEE Access

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In this paper, the method of classical vector potential analysis along with the asymptotic strips boundary conditions (ASBC) is used to treat conducting strip grated dielectric pipes wrapped over core dielectric cylindrical rods. By virtue of the periodically-textured surface, this structure is able to exhibit plasmonic behaviors that facilitate strong surface field localization and wave propagation, thereby offering itself as cylindrical surface-wave waveguides or antennas. It can also be configured to exhibit electromagnetic band-gap (EBG) properties, yielding what is known as cylindrical EBG structures. As opposed to a typical counterpart whose core rod is instead conducting, the core dielectric is herein demonstrated to be vital in realizing wide total band-gaps in which neither slow surface nor fast space waves exist, something that the conducting core rod version is incapable of, being only able to offer surface-wave band-gaps, as do many others in the literature that have neglected the suppression of fast space waves as well. By coaxially connecting various such rod structures, each with its own distinct total band-gap, multi-frequency, multi-functional cylindrical antennas with mitigated inter-band interference even under simultaneous operations can be achieved when the pass-band of any one rod (in which its operating frequency lies) falls within the total band-gaps of all others, as herein investigated. Manufactured prototypes are also measured, yielding experimental results that agree well with theoretical predictions.

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Synthesis of Phased Cylindrical Arc Antenna Arrays

Cited by 5 publications

References 6 publications

Phase-Only Antenna Array Reconfigurability with Gaussian-Shaped Nulls for 5G Applications

Phase-Only Antenna Array Reconfigurability with Gaussian-Shaped Nulls for 5G Applications

Cylindrical phased array with adaptive nulling using eigen‐correlation technique

Analysis by Asymptotic Boundary Conditions of Strip-Grated Dielectric Pipe Over Dielectric Rod With Wide Total Band-Gap as Multifrequency Cylindrical Leaky-Wave Antennas

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