Efficient Analysis of Planar, Arbitrarily Shaped, and (Bi)-Anisotropic Metasurface Antennas

Cavillot, Jean; Bodehou, Modeste; Hubert, Simon; Craeye, Christophe

doi:10.1109/tap.2021.3111305

Cited by 9 publications

(3 citation statements)

References 49 publications

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“…However, these contributions are based on essentially circular shapes to limit the impact of the small contribution of the substrate angles to the radiation and to this performance metric, also developing decomposition formalisms specifically adapted to these geometries to improve the definition of the electromagnetic characteristics to be synthesized 37 , 38 . Exploiting the whole footprint of the metasurfaces and including constraints facilitating their mounting, it is thus possible to demonstrate the adaptation of this morphogenetic technique to the synthesis of freeform metasurfaces 39 .…”

Section: Resultsmentioning

confidence: 99%

“…The proposed model thus facilitates the determination of a set of particularly simple interaction rules at a local scale, deduced from electromagnetic characteristics defined for the whole synthesized component and providing an highly scalable method. The optimization of the performances achievable by means of more complex electromagnetic formulations 39 , 43 nevertheless leaves possible margins of progress open in the wake of this first demonstration. The spatial self-structuring properties of the proposed technique enable more densely and uniformly arranged spatial distributions to be generated, compared with conventional methods based on periodic arrangements of meta-atoms.…”

Section: Discussionmentioning

confidence: 99%

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Morphogenetic metasurfaces: unlocking the potential of Turing patterns

Fromenteze,

Yurduseven,

Uche

et al. 2023

Nat Commun

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The reaction-diffusion principle imagined by Alan Turing in an attempt to explain the structuring of living organisms is leveraged in this work for the procedural synthesis of radiating metasurfaces. The adaptation of this morphogenesis technique ensures the growth of anisotropic cellular patterns automatically arranged to satisfy local electromagnetic constraints, facilitating the radiation of waves controlled in frequency, space, and polarization. Experimental validations of this method are presented, designing morphogenetic metasurfaces radiating far-field circularly polarized beams and generating a polarization-multiplexed hologram in the radiative near-field zone. The exploitation of morphogenesis-inspired models proves particularly well suited for solving generative design problems, converting global physical constraints into local interactions of simulated chemical reactants ensuring the emergence of self-organizing meta-atoms.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Morphogenetic metasurfaces: unlocking the potential of Turing patterns

Fromenteze,

Yurduseven,

Uche

et al. 2023

Nat Commun

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“…Second, the discretized currents are obtained through the enforcement of the boundary conditions. Effective MTS antenna analysis tools based on the MoM have been proposed in [19] - [23]. Those tools rely on the homogenization of the MTS, i.e.…”

Section: Introductionmentioning

confidence: 99%

Multi-Feed Metasurface Antennas: Direct Numerical Design and Experimental Validations

et al. 2023

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This paper provides new designs and realizations of leaky-wave (LW) metasurface (MTS) antennas fed at multiple points. The design technique is based on the direct integral-equation solution by the Method of Moments (MoM). The unknown is no longer the current distribution, but the impedance profile itself. The method can be used to generate any shaped radiation pattern in amplitude, phase, and polarization, provided that the antenna area and the feeder illumination are consistent with the shape of the desired radiation pattern. The algorithm can also be used to design multi-functional antennas (multibeam, multiband, dual-polarizion, etc). While multiple feeds are traditionally used to implement multiple fonctionnalities, they may also be required for the efficient generation of a single shaped beam, thus leading to a higher surface-wave (SW) to LW conversion efficiency. The present paper shows for the first time, two realizations of MTS design with the integral equation formalism, which require the usage of multiple feeds: a circularly polarized sectoral conical beam and a dual-polarized broadside beam MTS antenna. The good comparison between measurements and numerical predictions shows the effectiveness of the design method.

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Non-linear least squares optimization for the design of low side lobe level bidirectional holographic antennas

Moshiri,

Amini

2023

AEU - International Journal of Electronics and Communications

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Efficient Analysis of Planar, Arbitrarily Shaped, and (Bi)-Anisotropic Metasurface Antennas

Cited by 9 publications

References 49 publications

Morphogenetic metasurfaces: unlocking the potential of Turing patterns

Morphogenetic metasurfaces: unlocking the potential of Turing patterns

Multi-Feed Metasurface Antennas: Direct Numerical Design and Experimental Validations

Non-linear least squares optimization for the design of low side lobe level bidirectional holographic antennas

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