Results 41 to 50 of about 2,074 (252)

A Practical and Simple Detection and Identification Scheme for RIS-Assisted Systems

IEEE Open Journal of the Communications Society
Reconfigurable intelligent surface (RIS)-empowered communication is one of the promising physical layer enabling technologies for the upcoming sixth generation (6G) wireless networks due to their unprecedented capabilities in shaping the wireless ...
Aymen Khaleel, Recep Vural, Mehmet C. Ilter, Majid Gerami, Ertugrul Basar   +4 more
doaj   +1 more source

Reconfigurable intelligent surface-empowered MIMO systems

National Science Review, 2023
A brief overview is presented in this perspective, considering the application of reconfigurable intelligent surfaces for future multiple-input multiple-output (MIMO) systems.
openaire   +4 more sources

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

A Review of Metasurfaces for Microwave Energy Transmission and Harvesting in Wireless Powered Networks

IEEE Access, 2021
Wireless energy transmission and harvesting techniques have recently emerged as attractive solutions to realize wireless powered networks. By eliminating fundamental power constraints arising from the use of conventionally battery sources, wireless modes
Akaa Agbaeze Eteng, Hui Hwang Goh, Sharul Kamal Abdul Rahim, Akram Alomainy   +3 more
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Architecture for sub-100 ms liquid crystal reconfigurable intelligent surface based on defected delay lines

Communications Engineering
Reconfigurable intelligent surfaces, comprised of passive tunable elements, are emerging as an essential device for upcoming millimeter wave and terahertz wireless systems. A fundamental aspect of the device involves the tuning technology used to achieve
Robin Neuder, Marc Späth, Martin Schüßler, Alejandro Jiménez-Sáez   +3 more
doaj   +1 more source

AI-Driven Optimization of Wave-Controlled Reconfigurable Intelligent Surfaces

IEEE Open Journal of the Communications Society
A promising type of Reconfigurable Intelligent Surface (RIS) employs tunable control of its varactors using biasing transmission lines below the RIS reflecting elements.
Gal Ben-Itzhak, Miguel Saavedra-Melo, Ender Ayanoglu, Filippo Capolino, A. Lee Swindlehurst   +4 more
doaj   +1 more source

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Nonterrestrial Communications Assisted by Reconfigurable Intelligent Surfaces

Proceedings of the IEEE, 2022
arXiv admin note: text overlap with arXiv:2012.04775, arXiv:2010.02749 by other ...
Jia Ye, Jingping Qiao, Abla Kammoun, Mohamed-Slim Alouini   +3 more
openaire   +3 more sources