Engineering of Intelligent Reflecting Surfaces: Reflection Locality and Angular Stability

被引：11

作者：

Shabanpour, Javad ^{[1
]}

Lenets, Vladimir ^{[2
]}

Lerosey, Geoffroy ^{[2
]}

Tretyakov, Sergei ^{[1
]}

Simovski, Constantin ^{[1
]}

机构：

[1] Aalto Univ, Dept Elect & Nanoengn, Aalto 00079, Finland

[2] Greenerwave, F-75002 Paris, France

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2024年 / 72卷 / 05期

基金：

欧盟地平线“2020”;

关键词：

Angular stability (AS); channel reciprocity; metasurface (MS); reconfigurable intelligent surface (RIS); smart environment; wireless communication; PATH-LOSS; POLARIZATION; METASURFACES; CHALLENGES; MODEL; BAND;

D O I：

10.1109/TAP.2024.3375659

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Reconfigurable intelligent surfaces (RISs) are electromagnetically passive controllable structures, deflecting incident wave beams in tunable directions. A usual way to design RIS using metasurfaces (MSs) is based on the approximation in which the reflective properties of a uniform MS are attributed to unit cells of the nonuniform one. We call this approximation the reflection locality (RL) and analyze its applicability. We prove that RL holds for a wide range of incidence and deflection angles if and only if uniform MSs based on which the nonuniform one is generated possess so-called angular stability (AS). AS of an infinite uniform MS (that we call generic MS) means that its reflection coefficient is independent of the incidence angle for both TE and TM polarizations.

引用

页码：4198 / 4211

页数：14

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