Results 51 to 60 of about 6,839,717 (234)

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

3D Large‐Scale Subwavelength‐Resolution Sound Sheet Tomography Based on an Active and Programmable Circular Meta‐Array

Advanced Science, EarlyView.
A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang, Zi‐Bin Lin, Zhuo Chen, Zhao‐Hui Liu, Jin‐Lian He, Jun‐Jie Song, Long‐Sheng Zeng, Liang Zhou, Ming‐Yue Ding, Yu‐Gui Peng, Ming Yuchi, Xue‐Feng Zhu   +11 more
wiley   +1 more source

A 3×3 Antenna Beamforming Network Based on Waveguide Nolen Matrix for Ka-Bands

IEEE Access
The Fifth generation (5G) wireless communication system aims to provide high bandwidth, high sensitivity, high gain and power capability. Millimeter wave technology then proposed for these demands with various range of features such as higher bandwidth ...
Hatem Oday Hanoosh, Mohamad Kamal A. Rahim, Noor Asniza Murad, Yaqdhan Mahmood Hussein   +3 more
doaj   +1 more source

Robust MMSE Beamforming for Multiantenna Relay Networks [PDF]

IEEE Transactions on Vehicular Technology, 2016
we propose a robust minimum mean square error (MMSE) based beamforming technique for multiantenna relay broadcast channels, where a multi-antenna base station transmits signal to single antenna users with the help of a multiantenna relay. The signal transmission from the base station to the single antenna users is completed in two time slots, where the
Kanapathippillai Cumanan, Zhiguo Ding 0001, Yogachandran Rahulamathavan, Mehdi M. Molu, Hsiao-Hwa Chen   +4 more
openaire   +3 more sources

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

Advanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang, Zheng Xing Wang, Wanwan Cao, Zhen Jie Qi, Li Jie Wu, Han Qing Yang, Qun Yan Zhou, Si Ran Wang, Hui Dong Li, Jun Yan Dai, Jiang Luo, Jun Wei Wu, Jia Nan Zhang, Zhen Zhang, Qiang Cheng   +14 more
wiley   +1 more source

6G virtualized beamforming: a novel framework for optimizing massive MIMO in 6G networks

EURASIP Journal on Wireless Communications and Networking
The advent of 6G networks promises unprecedented connectivity, with massive multiple-input multiple-output (MIMO) technology playing a critical role in achieving high throughput, low latency, and enhanced spectral efficiency.
Ahmed M. Alwakeel
doaj   +1 more source

Optimal Hybrid Beamforming Design for Millimeter-Wave Massive Multi-User MIMO Relay Systems

IEEE Access, 2019
As a promising technology in the next generation mobile network, millimeter-wave (mmWave) communication can mitigate the spectrum crunch of improving the network capacity by exploiting the large underutilized spectrum bands of the mmWave frequencies. The
Yang Zhang, Jianhe Du, Yuanzhi Chen, Meng Han, Xingwang Li   +4 more
doaj   +1 more source

Optimum Wideband High Gain Analog Beamforming Network for 5G Applications

IEEE Access, 2019
A broadband high-gain millimeter-wave (mmWave) array beamforming network (BFN) design, analysis, and implementation based on the Rotman lens antenna array feeding are presented.
Essa H. Mujammami, Islam Afifi, A. Sebak
semanticscholar   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Butler-Matrix Beamspace Front-Ends for Massive MIMO: Architecture, Loss Budget, and Capacity Impact

Sensors
Massive Multiple-Input Multiple-Output (MIMO) systems with hundreds or thousands of antenna elements are fundamental to next-generation wireless networks, promising unprecedented spectral efficiency through spatial multiplexing and beamforming.
Felipe Vico, Jose F. Monserrat, Yiqun Ge
doaj   +1 more source