3-D-Printed Compact Wideband Magnetoelectric Dipoles With Circular Polarization

Kaddour, Abdul-Sattar; Bories, Serge; Bellion, Anthony; Delaveaud, Christophe

doi:10.1109/lawp.2018.2849092

Cited by 21 publications

(14 citation statements)

References 8 publications

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“…The left panel shows the objective space (here, three dimensional), whereas the right panel illustrates the parameter space (here, also three-dimensional): (a) first iteration: the extreme Pareto-optimal designs Fk, k = 1, 2, 3, are triangulated in the objective space to produce the initial point s(Ftmp); this design is refined (cf. (5), (6)) to obtain the new Pareto-optimal point x (4) and its representation in the objective space F (4) ; (b) second iteration of the algorithm, where the initial (objective space) design Ftmp is allocated in the center of the largest simplex (here, S (2) ); (c) one of the further iterations of the procedure.…”

Section: Optimization Proceduresmentioning

confidence: 99%

“…Thus, the computational savings due to the proposed approach are almost seventy percent. Table 4: x (1) (-), x (4) (), x (7) (---), and x (10) (-o-). Table 2.…”

Section: B Example 2: Planar Yagi Antennamentioning

confidence: 99%

“…Contemporary antenna systems have to satisfy multiple and often stringent requirements concerning their electrical and field characteristics, such as broadband [1] or multi-band operation [2], multi-input multi-output (MIMO) functionality [3], circular polarization [4], tunability [5], pattern diversity [6], or enhanced gain [7]. These specifications are rooted in the needs pertinent to specific application areas (e.g., wearable [8] or implantable devices [9]), including the emerging technologies such as 5G [10]- [12], or the internet of things (IoT) [13], [14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rapid Multi-Criterial Antenna Optimization by Means of Pareto Front Triangulation and Interpolative Design Predictors

Koziel

Pietrenko‐Dabrowska²

2021

IEEE Access

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Modern antenna systems are designed to meet stringent performance requirements pertinent to both their electrical and field properties. The objectives typically stay in conflict with each other. As the simultaneous improvement of all performance parameters is rarely possible, compromise solutions have to be sought. The most comprehensive information about available design trade-offs can be obtained through multiobjective optimization (MO), typically in the form of a Pareto set. Notwithstanding, MO is a numerically challenging task, in a large part due to high CPU cost of evaluating the antenna properties, normally carried out through full-wave electromagnetic (EM) analysis. Surrogate-assisted procedures can mitigate the cost issue to a certain extent but construction of reliable metamodels is hindered by the curse of dimensionality, and often highly nonlinear antenna characteristics. This work proposes an alternative approach to MO of antennas. The major contribution of our work consists in establishing a deterministic machine learning procedure, which involves sequential generation of Pareto-optimal designs based on the knowledge gathered so far in the process (specifically, by triangulation of the already obtained Pareto set), and local surrogate-assisted refinement procedures. Our methodology allows for rendering uniformly-distributed Pareto designs at the cost of a few hundreds of antenna EM simulations, as demonstrated by means of three verification case studies. Benchmarking against state-of-the-art MO techniques is provided as well. INDEX TERMS Antenna optimization; EM-driven design; multi-criterial design; Pareto front triangulation; surrogate modeling.

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Section: Optimization Proceduresmentioning

confidence: 99%

“…Thus, the computational savings due to the proposed approach are almost seventy percent. Table 4: x (1) (-), x (4) (), x (7) (---), and x (10) (-o-). Table 2.…”

Section: B Example 2: Planar Yagi Antennamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rapid Multi-Criterial Antenna Optimization by Means of Pareto Front Triangulation and Interpolative Design Predictors

Koziel

Pietrenko‐Dabrowska²

2021

IEEE Access

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“…Generally, the single patch antenna lacks expression parameters, such as, the beam-width or the first sidelobe, and so forth. Therefore, we use the average widths to represent and quantify the intervals of the E/H plane pattern, which can be calculated by (6). The patterns of HFSS are not entirely included by the upper and lower bounds of IA-based approach; however, the average widths (angle range from 30 -150 for E pattern and 0 -180 for H pattern) of the pattern interval have the same order of magnitude, as listed in Table 2.…”

Section: Effect Of L/w Tolerance On E/h Patternsmentioning

confidence: 99%

“…One feasible method starts by 3D printing the dielectric core, and then metallizing the inner or outer surfaces. This approach is used to produce a slotted waveguide array, 5 dipoles, 6 horns, 7 and even reflectors 8 . Another approach is to spray metallized ink as a conductive layer on a 3D printed (ultra‐violet (UV) curing) resin substrate, which has the ability to produce patch arrays on an arbitrary surface, such as, a conformal array 9 .…”

Section: Introductionmentioning

confidence: 99%

Tolerance analysis of 3D printed patch antennas based on interval arithmetic

Wang

et al. 2020

Micro & Optical Tech Letters

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A tolerance analysis approach based on interval arithmetic (IA) is proposed for heterogeneous three-dimensional (3D) printed patch antennas. Four key parameters-patch length, width, substrate thickness, and material properties-are considered that can introduce errors in the analysis results. Investigating the comprehensive effect of these parameters on resonant frequency and the E/H pattern of the patch is difficult and time-consuming when classical numerical simulations are employed. Thus, in this work, the four parameters are modeled as interval variables, and the equations between error and resonant frequency and the E/H pattern are derived using IA. Then, for the given tolerances (error intervals), the corresponding resonant frequency interval and E/H pattern interval are calculated using the proposed approach and compared with HFSS simulation results. Some samples of the patch antenna are fabricated via a self-developed heterogeneous 3D printer, which employs ink injection and laser sintering to fabricate the patch and the microstrip; furthermore, ultraviolet (UV) resin injection and curing are used to fabricate the substrate. The transmission performance of the samples is evaluated by comparing simulation and measurement results to verify the effectiveness of the proposed IA-based approach.

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Effect and experiment of curvature radius of 3‐D printed conformal load‐bearing antenna array on EM performance

Wang

Ren

Meng

2020

Int J RF Microw Comput Aided Eng

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Prototypes of a special conformal load‐bearing antenna array (CLAA) which has nondevelopable surface, are designed, fabricated, and tested, and the effect of the substrate curvature radius on its EM performance is also researched in this work. A novel three‐dimensional (3‐D) printing technology and fabrication equipment based on micro‐droplet spraying and metal laser sintering are proposed to create patch array and divider network on a non‐developable curved rigid substrate. In order to compare with conventional technology (such as chemical etching), a planar CLAA prototype with two patches, operating frequency at 5GHz, is designed and fabricated by two different technologies, the surface roughness, fabrication tolerance, and EM performance are tested and compared. Finally, a spherical CLAA prototype with eight patches, operating frequency at 13GHz, is designed and fabricated by the novel 3D printing, measured EM performance demonstrate the applicability of additive manufacturing for this special CLAA.

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3-D-Printed Compact Wideband Magnetoelectric Dipoles With Circular Polarization

Cited by 21 publications

References 8 publications

Rapid Multi-Criterial Antenna Optimization by Means of Pareto Front Triangulation and Interpolative Design Predictors

Rapid Multi-Criterial Antenna Optimization by Means of Pareto Front Triangulation and Interpolative Design Predictors

Tolerance analysis of 3D printed patch antennas based on interval arithmetic

Effect and experiment of curvature radius of 3‐D printed conformal load‐bearing antenna array on EM performance

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