Dual-Band Diffusive Metasurface-Based Reflector With Low Out-of-Band Backscattering

Lv, Qihao; Tang, Yue; Zhang, Binchao; Yin, Liyuan; Jin, Cheng; Mittra, R.

doi:10.1109/access.2020.3042600

Cited by 5 publications

(1 citation statement)

References 27 publications

(21 reference statements)

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“…Using metasurfaces, polarization, amplitude, and the phase of the electromagnetic (EM) waves can be controlled by designing the pattern of meta-atoms, adjusting the geometric parameters and loading resistor, etc. (Iriarte Galarregui et al, 2013;Chen et al, 2016;Xu et al, 2016;Diaz-Rubio et al, 2017;Huang et al, 2017;Lv et al, 2020). Later, the ideology and methodology of the antenna design was introduced into the metasurface design, which injects new vitality into the development of metasurfaces (Jiang et al, 2016;Li et al, 2017;Huang and Shen, 2019;Zhang et al, 2020;Wang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Radiation-Scattering–Integrated Design of Multi-Functional Metasurfaces Based on Antenna-Embedded Substrates

Yang²,

Han

et al. 2022

Front. Mater.

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The integration of the metasurface and antenna has brought new vitality to function integration and performance improvement for metasurfaces. In this study, we propose a radiation-scattering–integrated (RSI) design method of functional metasurfaces by incorporating antenna radiators into the substrates. The antenna radiators can also be considered as a band-stop frequency selective surface (FSS) embedded within the dielectric substrate, which adds up to the degree of freedom (DOF) in tailoring electromagnetic (EM) properties of the substrate. In this way, not only radiation function is added to the metasurfaces but also the original scattering-manipulation function is augmented. As an example, we apply this method to the design of a metasurface that can achieve a high radiation gain in-band and low-RCS out-of-band simultaneously. An antenna array was first designed, which uses circular patches as the radiators. Then, the antenna array was used as the substrate of a typical polarization conversion (PC) metasurface. The circular patch lies between the ground plane and the PC meta-atom, providing optimal electrical substrate thickness for PC at two separate bands. By adjusting structural parameters, the operating band of the antenna array can be made to lie in between the two PC bands. In this way, the metasurface can simultaneously possess high-gain radiation function in-band and high-efficiency PC function for RCS reduction out-of-band. A prototype was fabricated and measured. Both the simulated and measured results show that the metasurface can achieve satisfactory radiation gain in-band and significant RCS reduction out of band. This work provides an alternative method of designing multi-functional metasurfaces, which may find applications in smart skins and others.

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Section: Introductionmentioning

confidence: 99%

Radiation-Scattering–Integrated Design of Multi-Functional Metasurfaces Based on Antenna-Embedded Substrates

Yang²,

Han

et al. 2022

Front. Mater.

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Cross-Polarization Control in FSSs by Means of an Equivalent Circuit Approach

et al. 2021

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This paper presents an efficient equivalent circuit approach (ECA), based on a Floquet modal expansion, for the study of the co-and cross-polarization in frequency selective surfaces (FSS) formed by periodic arrays of patches/apertures in either single or stacked configurations. The ECA makes it possible the derivation of analytical expressions for the generalized scattering parameters associated with the proposed circuit networks. Furthermore, the proposed circuit approach is an efficient surrogate model that can be combined with optimization techniques and artificial intelligence algorithms for the efficient design of FSS structures, saving efforts in the computation compared to time-consuming full-wave simulators and tedious synthesis (simulation-assisted) techniques. Due to the simplicity of the topology of the involved networks, the ECA can also be advantageously used to gain physical insight. The proposed approach is applied and validated in different FSS configurations where the cross-pol component plays a fundamental role in the design, as in circular polarizers, polarization rotators, and reflectarray cells. INDEX TERMSFrequency selective surface, equivalent circuit approach, co-and cross-polarization terms, metamaterials.

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Diffusive–Reflective Metasurface With Dual Independent Reflection Bands for RCS Reduction

Zhang

Jin

Yin

et al. 2022

Antennas Wirel. Propag. Lett.

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Dual-Band Diffusive Metasurface-Based Reflector With Low Out-of-Band Backscattering

Cited by 5 publications

References 27 publications

Radiation-Scattering–Integrated Design of Multi-Functional Metasurfaces Based on Antenna-Embedded Substrates

Radiation-Scattering–Integrated Design of Multi-Functional Metasurfaces Based on Antenna-Embedded Substrates

Cross-Polarization Control in FSSs by Means of an Equivalent Circuit Approach

Diffusive–Reflective Metasurface With Dual Independent Reflection Bands for RCS Reduction

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