A Time-Domain Model of Reconfigurable Intelligent Surfaces Through the Fast Inversion of the Laplace Transform

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F23%3APU149793" target="_blank" >RIV/00216305:26220/23:PU149793 - isvavai.cz</a>

Result on the web

<a href="https://ieeexplore.ieee.org/document/10274380" target="_blank" >https://ieeexplore.ieee.org/document/10274380</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EMCEurope57790.2023.10274380" target="_blank" >10.1109/EMCEurope57790.2023.10274380</a>

Result language

angličtina

Original language name

A Time-Domain Model of Reconfigurable Intelligent Surfaces Through the Fast Inversion of the Laplace Transform

Original language description

The Reconfigurable Intelligent Surface (RIS) technology has gained a growing interest in both academia and industry given its capability to provide more flexible and controllable wireless propagation channels. RISs typically consist of inexpensive scattering elements (i.e., unit cells), which are spaced at sub-wavelength distances, and their characterization is mainly performed in the frequency domain. The aim of this work is to present a novel time-domain modeling approach for RISs, which is based on an inverse Laplace transform and allows to overcome some of the limitations of direct time domain analyses. In particular, since propagation delays between transmitters, RIS, and receivers are important and need to be accurately reproduced, a dedicated version of the Fast Inversion of the Laplace Transform (FILT) is presented and is found to guarantee accurate time-domain representation, while preserving the causality of the system response. In contrast to conventional time-stepping methods, the presented modeling technique is stable and allows to calculate the system response in a bounded time window within which the interaction takes place, thereby reducing the computational burden. Finally, the aforementioned claims are supported and validated by extensive numerical simulations and tests.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings 2023 International Symposium on EMC Europe,

ISBN

9798350324006

ISSN

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e-ISSN

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Number of pages

5

Pages from-to

„“-„“

Publisher name

IEEE EMC Society

Place of publication

Krakow, Poland

Event location

Florence, Italy

Event date

Mar 26, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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