Results 101 to 110 of about 639,224 (342)

High Rate/Low Complexity Space-Time Block Codes for 2x2 Reconfigurable MIMO Systems

, 2015
In this paper, we propose a full-rate full-diversity space-time block code (STBC) for 2x2 reconfigurable multiple-input multiple-output (MIMO) systems that require a low complexity maximum likelihood (ML) detector. We consider a transmitter equipped with
Hua, Yingbo, Jafarkhani, Hamid, Mehrpouyan, Hani, Vakilian, Vida   +3 more
core  

A novel green antenna phase-shift system with data acquisition boards [PDF]

, 2012
A novel green phase shifter system is proposed in this research. The system is developed by a combination of reconfigurable beam steering antennas and data acquisition (DAQ) boards. A combination of two reconfigurable beam steering antennas, located side-
Abd. Rahim, Sharul Kamal, Abdul Rahman, Tharek, Ahmad, Z. A., Jamlos, M. A., Jamlos, M. F., Jusoh, M., Kahar, N. F., Kamarudin, Muhammad Ramlee, Malek, M. F., Romli, M. A.   +9 more
core  

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Jonas Riisnaes Karl, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source

A Dual-Band Frequency Reconfigurable MIMO Patch-Slot Antenna Based on Reconfigurable Microstrip Feedline

IEEE Access, 2018
In this paper, a novel microstrip feedline-based dual-band frequency reconfigurable multipleinput multiple-output (MIMO) patch-slot antenna design is presented.
Xiongwen Zhao, Sharjeel Riaz
doaj   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

Advanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Design of frequency and beam reconfigurable antenna based on encoded reflectors for Wi-Fi and IoT applications

AIP Advances
A frequency and beam reconfigurable antenna based on encoded reflectors for Wi-Fi and IoT applications is proposed in this paper. By modifying the traditional Alford antenna, extending the transmission line, adding radiation arms, and loading PIN diodes,
Ziyi Jiao, Yutong Zhao
doaj   +1 more source

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Frequency-Reconfigurable Antenna Using Metasurface

IEEE Transactions on Antennas and Propagation, 2014
A frequency-reconfigurable antenna designed using metasurface (MS) to operate at around 5 GHz is proposed and studied. The frequency-reconfigurable metasurfaced (FRMS) antenna is composed of a simple circular patch antenna and a circular MS with the same diameter of 40 mm (0.67 λ) and implemented using planar technology.
Zhu, HL, Liu, XH, Yuk, TTI, Cheung, SW
openaire   +3 more sources

Programmable In‐Situ Interactions Between Resins and Photopolymerized Structures for Seamlessly Integrated Optical Manufacturing of Microlenses

Advanced Functional Materials, EarlyView.
This study presents a dynamic interaction between liquid resins and photopolymerized structures enabled by an in situ light‐writing setup. By controlling a three‐phase interface through localized photopolymerization, which provides physical confinement for the remaining uncured resin regions, the approach establishes a programmable pathway that ...
Kibeom Kim, Sangmin Oh, Kahyun Hur, Hyesung Cho   +3 more
wiley   +1 more source

Electronically Tunable Antenna Pair and Novel RF Front-End Architecture for Software-Defined Radios

EURASIP Journal on Advances in Signal Processing, 2005
This paper proposes a novel RF front-end architecture for software-defined radios (SDRs) based on an electronically tunable antenna pair controlled by an antenna control unit (ACU) consisting of field effect transistor (FET) switches and a field ...
Oh Sung-Hoon, Aberle James T, Anantharaman Sreeraman, Arai Kentaro, Chong Han Liang, Koay Seng Chee   +5 more
doaj   +1 more source