Design of aperiodic spherical antenna arrays for wideband performance

Elizarrarás, Omar; Panduro, Marco A.; Méndez, Aldo; Reyna, Alberto; Covarrubias, David H.; Garza, Leopoldo A.

doi:10.1007/s12243-020-00830-y

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…A comparative analysis of DE, PSO, and GA is evaluated to optimize the amplitude and phase excitations across the antenna elements for the design of scannable circular antenna arrays 18 . In Reference 19, the Differential Evolution (DE) algorithm is applied to aperiodic spherical arrays in order to achieve the optimum angular position of each element for attaining the maximum performance of array antenna in terms of radiation pattern, beam scanning and directivity. In Reference 20, the performance of several gradient based adaptive beam forming techniques such as traditional LMS (Least mean square), NLMS, Hybrid LMS, VSS‐LMS, and so forth have been investigated for beam‐steering the main lobe and side lobes level suppression.…”

Section: Introductionmentioning

confidence: 99%

Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique

Khan

Khattak

Asif

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this paper, a modified convex optimization technique is used for radiation pattern correction in a cylindrical-shaped conformal microstrip array antenna.The technique uses numerical simulations to optimize the amplitude and phase excitations, with the goal to decrease the Euclidean distance between the desired field pattern and the obtained (simulated/measured) field pattern while maintaining the main beam direction, null's location, and side lobe levels under control. Two prototypes of 1 Â 4 and 2 Â 4 conformal microstrip antenna array deformed from linear/planar structure to the prescribed cylindrical shape, with different radii of curvature, are studied to demonstrate the performance of the proposed technique. The proposed convex optimization model when applied to conformal antenna array possesses fast computing speed and high convergence accuracy for radiation pattern synthesis, which can be a valuable tool for engineering applications.

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Section: Introductionmentioning

confidence: 99%

Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique

Khan

Khattak

Asif

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

show abstract

Real-Time Pattern Synthesis for Large-Scale Conformal Arrays Based on Interpolation and Artificial Neural Network Method

Yang,

Chen

et al. 2023

IEEE Trans. Antennas Propagat.

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Investigation of Multibeam Forming Algorithm for Cylindrical Conformal Array Antenna

Zhao¹,

Liu

Mei

2022

International Journal of Antennas and Propagation

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A multibeam forming algorithm based on cylindrical conformal array antenna is proposed in this paper. A comprehensively optimized algorithm of Taylor weights is used to reduce sidelobes. Multiple beams pointed at different azimuth angles are formed based on a reconfigurable overlapping array division method of subarrays, therefore each beam can get the maximum excitation of subarrays and ensure the pointing accuracy of the main lobe. Finally the cylindrical array antenna realizes the multibeam scanning and area coverage. The experimental results show that the sidelobe level after comprehensive optimization is 7.37 dB lower than that without optimization and 1.71 dB lower than that of traditional optimization when a single beam is formed. The comprehensive optimization can eliminate the grating lobe between two beams and reduce the sidelobe to -15 ∼ -20 dB when the two beams are 30°. The left sidelobe is reduced by 2.75 dB and the right sidelobe is reduced by 1.69 dB after comprehensive optimization when the two beams are separated by 40°.

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Design of aperiodic spherical antenna arrays for wideband performance

Cited by 3 publications

References 27 publications

Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique

Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique

Real-Time Pattern Synthesis for Large-Scale Conformal Arrays Based on Interpolation and Artificial Neural Network Method

Investigation of Multibeam Forming Algorithm for Cylindrical Conformal Array Antenna

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