An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Albagory, Yasser

doi:10.3390/s21041362

Cited by 9 publications

(7 citation statements)

References 39 publications

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“…Albagory et al 30 presented unmanned aerial vehicles (UAVs) and space vehicles, a novel array of conformal construction and beamforming technology is presented to enable better characteristics performance. The suggested array is made up of conical, cylindrical, and concentric circular (CSC4) arrays which are arranged in the form of co‐axial with the conforming body's axis and have consistent inter‐element spacing.…”

Section: Related Workmentioning

confidence: 99%

Triple‐band circularly polarized conformal antenna for vehicular communication applications

Lakshmi

Prasad

2023

Trans Emerging Tel Tech

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Vehicular communication presents a compact wideband implantable antenna for the best wireless transmission of information. The key role of the antenna is handled by the thickness of the substrate present in that antenna. Also, the shape of the antenna causes the performance characteristics. Now, vehicle‐to‐vehicle communication is the interesting task for designers to create successful and organized vehicular communication systems. This article presents a triple‐band circularly polarized conformal antenna for vehicular communication. An antenna is introduced as a triple‐band circular polarized conformal antenna and preserved a suitable mount on the vehicle surface for greater gain to provide well‐maintained operational performance characteristics. For getting circular polarization, circular cuttings are provided in the design of the proposed antenna. The radiation gives a fixed direction by providing 0.3 mm thickness. Here, use a circularly polarized antenna to rectify the signal absorption due to the contact material used in the antenna. A polyamide material is used as a substrate to get a probable successful link and improve the flexibility of the antenna. The triple‐band circularly polarized antenna is designed to operate in vehicular communication bands such as 2.4 GHz Wi‐Fi, 3.5 GHz WiMAX, and 5.9 GHz dedicated short range communication. The antenna is designed to resonate in a triple band to improve the antenna parameters like frequency response characteristics, gain, return loss, voltage standing wave ratio, left hand circularly polarization, right hand circularly polarization, axial ratio, fidelity factor, directivity, radiated power, and input impedance. Under the operating frequency bands of 2.4, 3.4, and 5.9 GHz, the efficiency of the proposed antenna is 98.48%, 97.31%, and 97.90%, respectively. The triple‐band circularly polarized conformal antenna is implemented in the high‐frequency structure simulator platform. The proposed tri‐band antenna is applicable in vehicular communication systems and healthcare for efficient wireless transmission.

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Section: Related Workmentioning

confidence: 99%

Triple‐band circularly polarized conformal antenna for vehicular communication applications

Lakshmi

Prasad

2023

Trans Emerging Tel Tech

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“…Conformal array antennas (CAAs) refer to an array antenna attached to and fitted to a carrier surface, i.e., a non-planar conformal antenna array that needs to be conformally installed on a fixed-shape surface [1]. The patch array antenna is widely used in aerospace [2,3] and military [4] communication equipment owing to its high gain characteristics, flexible shape, controllable beam shape, and ease in conforming to the surfaces of dielectric substrate.…”

Section: Introductionmentioning

confidence: 99%

Surrogate-Model-Based Interval Analysis of Spherical Conformal Array Antenna with Power Pattern Tolerance

Ding

Rocca

Chang

et al. 2022

Sensors

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A method based on an interval arithmetic is proposed to analyze uncertain factors such as the curvature radii, excitation amplitude, and excitation phase of a spherical conformal array antenna. An interval description of element factors under different curvature radii of spherical substrates is established using the surrogate model based on the data obtained through a full-wave analysis method. The interval formula of the spherical curvature radius and array element position error is derived and the effects of the spherical radius tolerance, excitation amplitude tolerance, and excitation phase tolerance on the antenna power pattern are studied. To evaluate the effectiveness and reliability of the proposed method, a set of representative numerical results are reported and discussed and a comparison with the Monte Carlo methods and full-wave simulation is described. This method can be widely used during the antenna design and before the antenna prototyping/manufacturing to predict the effects, on the radiation performance, of possible errors/tolerances in the antenna structure to guarantee the antenna working ‘in operation’.

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“…Thus, it is essential to reduce the sidelobe level (SLL) to improve the carrier-to-interference ratio (CIR) and hence the overall system capacity. The SLL can be reduced by several techniques and algorithms such as the tapered amplitude windows [11][12][13][14][15][16][17][18] and advanced evolutionary optimization techniques [19][20][21][22][23][24][25][26][27][28][29][30][31][32]. Tapered beamforming applies various amplitude feeding windows to any array geometry which effectively reduces the SLL (with some increase in the main lobe beamwidth).…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

An Efficient Adaptive and Steep-Convergent Sidelobes Simultaneous Reduction Algorithm for Massive Linear Arrays

Albagory¹,

Alraddady²

2022

Electronics

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Antenna arrays have become an essential part of most wireless communications systems. In this paper, the unwanted sidelobes in the symmetric linear array power pattern are reduced efficiently by utilizing a faster simultaneous sidelobes processing algorithm, which generates nulling sub-beams that are adapted to control and maintain steep convergence toward lower sidelobe levels. The proposed algorithm is performed using adaptive damping and heuristic factors which result in learning curve perturbations during the first few loops of the reduction process and is followed by a very steep convergence profile towards deep sidelobe levels. The numerical results show that, using the proposed adaptive sidelobes simultaneous reduction algorithm, a maximum sidelobe level of −50 dB can be achieved after only 10 iteration loops (especially for very large antenna arrays formed by 256 elements, wherein the processing time is reduced to approximately 25% of that required by the conventional fixed damping factor case). On the other hand, the generated array weights can be applied to practical linear antenna arrays under mutual coupling effects, which have shown very similar results to the radiation pattern of the isotropic antenna elements with very deep sidelobe levels and the same beamwidth.

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An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Cited by 9 publications

References 39 publications

Triple‐band circularly polarized conformal antenna for vehicular communication applications

Triple‐band circularly polarized conformal antenna for vehicular communication applications

Surrogate-Model-Based Interval Analysis of Spherical Conformal Array Antenna with Power Pattern Tolerance

An Efficient Adaptive and Steep-Convergent Sidelobes Simultaneous Reduction Algorithm for Massive Linear Arrays

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