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Article
Engineering, Electrical & Electronic
Andrea Massa et al.
Summary: The system-by-design (SbD) is an emerging engineering framework that addresses the computational complexity of complex electromagnetic (EM) devices and systems through the integration of functional blocks and optimization strategies. It provides a favorable environment for optimal exploitation of global optimization tools in sampling wide/complex/nonlinear solution spaces. This research summary provides a comprehensive description of the SbD framework, guidelines for customization and application, and future trends in this high-interest topic.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Paolo Rocca et al.
Summary: This paper discusses the design strategy of building EMS for urban millimeter-wave communication scenarios, aiming to improve coverage by using the minimum tile units on the building facade and searching for the optimal EMS layout with a binary multiobjective optimization method. The numerical results are reported to validate the effectiveness of the EMS solution in SEME.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Peng Mei et al.
Summary: This study evaluates the benefits of using a reconfigurable intelligent surface (RIS) with a large aperture for near-field communications, compared to conventional far-field communications. The electric fields in the near-field region from near-field focusing and far-field RISs are simulated and compared. The study defines metrics for benefit distance and near-field gain and calculates the cumulative distribution function (CDF) related to the near-field gain. The effects of RIS size and phase quantization on the benefits are discussed, and the maximum focal distance for a near-field focusing RIS is derived.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Giacomo Oliveri et al.
Summary: In this study, an innovative design process for static passive smart skins is proposed, taking into consideration electromagnetic interactions due to their finite size and aperiodic layouts. The process combines an inverse source formulation to define surface currents and a system-by-design paradigm to synthesize unit cell descriptors. An enhanced artificial intelligence-based digital twin is built to predict relationships among unit cells and nonuniform coupling effects, creating a training database for implementation.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Vittorio Degli-Esposti et al.
Summary: Reconfigurable intelligent surfaces (RISs) have useful characteristics and can dynamically change wave transformations for engineering wireless propagation or realizing novel surface-type antennas. Physically consistent frameworks that account for the electromagnetic characteristics of dynamic metasurfaces are needed to evaluate the performance and optimize the deployment of RISs in wireless networks.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Yan Zhang et al.
Summary: In this paper, we investigate the performance of an RIS-aided wireless communication system subject to outdated channel state information. We analyze two RIS deployment strategies: centralized deployment and distributed deployment. The results show that increasing transmit power, Rician-K factor, accuracy of channel state information, and number of reflecting elements improves the system performance. We also find that the centralized RIS-aided deployment achieves higher symbol error rate when the RIS is located near the base station or user, while the distributed deployment outperforms the centralized deployment in other setups.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Physics, Applied
Hai Lin et al.
Summary: This paper introduces a +45 degrees-polarized dual-band reconfigurable metasurface with beam steering ability, effectively addressing signal attenuation in wireless communications. By varying the bias voltages in the meta-atom, 0 and pi phase responses were excited around both 2.4 and 5.8 GHz, and a one-bit coding RIS device for dual-band applications was proposed. The fabricated metasurface with 16 x 16 elements showed good agreement between measurement and simulation results, making it a promising candidate for future intelligent communications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Marco Salucci et al.
Summary: The design of feasible surface currents in reflectarray antenna is addressed in this paper. A novel synthesis method is proposed to simultaneously match radiation requirements and constraints on the surface currents. Numerical experiments are conducted to illustrate the features, potentialities, and current limitations of the proposed approach.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Davide Dardari et al.
Summary: This paper explores the use of a reconfigurable intelligent surface to enable mobile user localization under non-line-of-sight channel conditions, especially in the near-field propagation regime. It proposes practical algorithms and methods for designing the RIS to achieve robust localization accuracy, and evaluates performance trade-offs in various scenarios.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Mirko Barbuto et al.
Summary: So far, the environment has been seen as a limitation to communication systems, but recent research shows that it can be used as a new degree of freedom to enhance system performance. Intelligent surfaces, specifically metasurfaces, offer a promising solution for controlling electromagnetic wave propagation and have the potential to overcome detrimental effects in wireless communications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Arianna Benoni et al.
Summary: This paper addresses the optimal planning of electromagnetic skins (EMSs) installed on building facades to enhance wireless coverage and/or the Quality-of-Service (QoS) in large-scale urban areas. It proposes a novel instance of the System-by-Design (SbD) paradigm for the implementation of a smart electromagnetic environment (SEME) through the deployment of low-cost passive static reflective skins.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Mirko Barbuto et al.
Summary: This article discusses the possibility of using composite vortex theory to manipulate the response of reflective and radiating systems. By adjusting a few parameters, it is possible to easily control the radiation properties of patch antennas and the scattering pattern of reflective surfaces.
PROCEEDINGS OF THE 2022 21ST MEDITERRANEAN MICROWAVE SYMPOSIUM (MMS 2022)
(2022)
Article
Engineering, Electrical & Electronic
Mirko Barbuto et al.
Summary: The development of the next generation of wireless systems requires more attention to the physical layer of the communication link. Traditional wireless systems are not suitable for modern electromagnetic environments, and embedded smartness is a necessary feature for expanding functionalities. This paper presents a design approach based on the combination of 2D metastructures with conventional antennas and reflectors, which enables unprecedented electromagnetic behavior.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Ana Diaz-Rubio et al.
Summary: In the face of challenging requirements for future mobile communication systems, researchers are exploring the potential of creating intelligent radio environments using reconfigurable and smart metasurfaces. These metasurfaces can redirect incident waves in desired directions and their behavior when illuminated from other directions as well as how scattering from finite-sized anomalous reflectors can be estimated is crucial. Models have been developed to explain the behavior of phase-gradient metasurfaces and anomalous reflections, providing a foundation for integrating these elements into propagation channel ray-tracing models.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Multidisciplinary Sciences
Idban Alamzadeh et al.
Summary: The article introduces a reconfigurable reflective metasurface with integrated sensing capabilities, which can couple a portion of the incident wave to sensing waveguides by modifying meta-atoms. It also proposes a method to reduce the required number of sensors, which can benefit wireless communication, wireless power transfer, RF sensing, and smart sensors.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
Fadil H. Danufane et al.
Summary: This paper introduces a physics-consistent analytical characterization of the free-space path-loss of a wireless link in the presence of a reconfigurable intelligent surface. The proposed method is based on the vector generalization of Green's theorem and can be applied to two-dimensional homogenized metasurfaces. The obtained path-loss model includes multiple design parameters and operating regimes, providing closed-form expressions for far-field and near-field deployments.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Jean-Baptiste Gros et al.
Summary: This study focuses on the design and experimental demonstration of a reconfigurable intelligent surface with binary phase modulation, showing high efficiency and potential in controlling millimeter waves. The research involves numerical analysis and experimental validation of unit cells, highlighting the capabilities of binary phase RIS in various scenarios.
IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Huiyuan Yang et al.
Summary: This paper investigates a promising technology for improving energy and spectrum efficiency of wireless networks through reconfigurable intelligent surfaces (RIS). It proposes suboptimal solutions based on semidefinite relaxation (SDR) and successive convex approximation (SCA) techniques, while also considering user fairness and analyzing performance in the case of multiple users.
IEEE TRANSACTIONS ON SIGNAL PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Marco Di Renzo et al.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2020)
Article
Engineering, Electrical & Electronic
Marco Di Renzo et al.
IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY
(2020)
Review
Engineering, Electrical & Electronic
Marco Di Renzo et al.
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING
(2019)
Article
Engineering, Electrical & Electronic
Karim Achouri et al.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2015)
Article
Engineering, Electrical & Electronic
EF Kuester et al.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2003)
