An electrically tunable absorbing metasurface for surface waves and plane waves

Luo, Zhangjie; Zhao, Liang; Xue, Changjiang; Sievenpiper, Daniel F.

doi:10.1109/apmc.2016.7931456

Cited by 13 publications

(6 citation statements)

References 14 publications

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“…By loading the metasurfaces with lumped elements the metasurface response can be altered [15]. These lumped elements can be replaced with tunable varactors or varistors and create electronically tunable metasurface reflectors [16], [17] and absorbers [18], [19]. Other means of obtaining tunable metasurfaces have been shown, like magnetic tunability [20], optical tunability [21] and even by exploiting the optomechanical properties of poly disperse red 1 acrylate to optically tune metasurfaces with a memory effect [22], [23].…”

Section: Introductionmentioning

confidence: 99%

Toward the Realization of a Programmable Metasurface Absorber Enabled by Custom Integrated Circuit Technology

et al. 2020

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The realization of a programmable metasurface, enabled by a custom application-specific integrated circuit (ASIC), is presented in this paper. The ASIC is used to provide an adaptive complex impedance load to each of the metasurface unit cells. Various technology nodes are analyzed for the implementation of tunable complex impedance loading elements before one is selected for the final implementation, in which four complex loads are placed within each integrated circuit, and each load is controlled by two digital-toanalog converters. Furthermore, the ASICs populate the back of the metasurface to form a mesh network to enable programmability. The paper includes practical limitations that affect the realization, as well as an example adaptive metasurface absorber that builds upon the practical tuning range of the ASIC. Perfect absorption for both transverse electric and transverse magnetic polarization is demonstrated. INDEX TERMS Metasurfaces, ASIC, programmable RF load, perfect absorption, reconfigurable.

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Section: Introductionmentioning

confidence: 99%

Toward the Realization of a Programmable Metasurface Absorber Enabled by Custom Integrated Circuit Technology

et al. 2020

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“…Electrically thin, two dimensional metamaterials, known as metasurfaces (MSFs), are composite materials that have been shown to demonstrate many novel properties such as anomalous reflection [1], [2], perfect absorption [3], [4] and nonlinear reflection [5]. Electronically tunable MSF reflectors [6], [7] and absorbers [8], [9] have been studied extensively. Furthermore, other means of tuning metasurfaces have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Integrated-Circuit Enabled Adaptive Metasurface Absorber With Independent Tuning of Orthogonal Polarization Planes

2020

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A customized integrated circuit (IC) is presented that is designed specifically for implementing complex-impedance metasurface loading elements. This IC enables innovative metasurface designs that target absorption applications. Through targeted electronic and electromagnetic co-design, we propose an innovative metasurface unit cell to implement a tunable metasurface absorber. We demonstrate the proposed loading element performance range through a fabricated custom IC. Experimental measurements of the fabricated loading element circuit in a 180 nm CMOS technology are used in an electromagnetic simulator to demonstrate tunable perfect absorption at normal and oblique angles of incidence for both transverse electric (TE) and transverse magnetic (TM) polarizations. With four of the proposed loading elements, realized on a custom IC, the metasurface absorber is shown to control independently and simultaneously the absorption of both TE and TM polarizations. INDEX TERMS Tunable metasurface, custom integrated circuit, metasurface load, 180nm technology.

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“…The most advantage of realizing TIBC using printed circuits technology is providing the possibility of combining these surfaces with lumped circuits elements. This method can also increase the capability of the TISs . Moreover, lumped elements can be used to resolve the problem of high thickness of these sheets at low frequencies …”

Section: Introductionmentioning

confidence: 99%

“…This method can also increase the capability of the TISs. [13][14][15][16] Moreover, lumped elements can be used to resolve the problem of high thickness of these sheets at low frequencies. 17 Tensor impedance waveguides have been presented in the latest research studies on this topic.…”

Section: Introductionmentioning

confidence: 99%

Analytical study of surface wave multiple refraction in boundary of a scalar impedance surface with a tensor impedance surface

Mighani

Dadashzadeh

2020

Int J RF Microw Comput Aided Eng

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In this paper, the multiple refraction phenomenon is investigated on the boundary of a scalar impedance surface (SIS) and a tensor impedance surface (TIS). When a surface wave (SW) propagates on the SIS and radiates to the boundary of the TIS, the propagation direction of it is changed and the refraction phenomenon is accrued. The method that is proposed in this paper can predict the multiple refraction for the SW. Moreover, another analytical method is introduced for designing the proposed structure which the double refraction (DR) occurs at arbitrary angles on it. Using it, a sample of the structure is designed by printed circuits in 15.2GHz and the results are verified by the full‐wave simulation and measurement. The results are shown that in the structure, DR is occurred in 2° and 22° as predicted. The proposed method can provide many applications such as design of SW power dividers based on the TISs, impedance surface based waveguides, holographic antennas, and feeding of array antennas.

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An electrically tunable absorbing metasurface for surface waves and plane waves

Cited by 13 publications

References 14 publications

Toward the Realization of a Programmable Metasurface Absorber Enabled by Custom Integrated Circuit Technology

Toward the Realization of a Programmable Metasurface Absorber Enabled by Custom Integrated Circuit Technology

Integrated-Circuit Enabled Adaptive Metasurface Absorber With Independent Tuning of Orthogonal Polarization Planes

Analytical study of surface wave multiple refraction in boundary of a scalar impedance surface with a tensor impedance surface

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