Results 101 to 110 of about 29,451 (299)

Antenna reconfiguration using metasurfaces [PDF]

, 2014
The paper describes the designs of a frequency-reconfigurable, polarization reconfigurable and pattern reconfigurable antennas using metasurfaces (MS).
Cheung, WSW, Yuk, TI, Zhu, H
core  

Photonic RF and microwave reconfigurable filters and true time delays based on an integrated optical Kerr frequency comb source

, 2018
We demonstrate advanced transversal radio frequency (RF) and microwave functions based on a Kerr optical comb source generated by an integrated micro-ring resonator.
Chu, Sai T., Little, Brent E., Mitchell, Arnan, Morandotti, Roberto, Moss, David J., Nguyen, Thach G., Shoeiby, Mehrdad, Wu, Jiayang, Xu, Xingyuan   +8 more
core   +1 more source

PATCH ANTENNA WITH RECONFIGURABLE POLARIZATION

Progress In Electromagnetics Research C, 2009
A reconfigurable patch antenna consisting of a square patch with two cross-shaped diagonal slots is presented. The proposed design approach is based on the use of two pairs of switches in order to obtain both frequency and polarization reconfigurability.
MONTI, GIUSEPPINA, Laura Corchia, TARRICONE, Luciano   +2 more
openaire   +2 more sources

Rewriting Polymer Fate via Chemomechanical Coupling

Advanced Materials, EarlyView.
This work introduces a life‐like “living” polymer platform that can grow, degrow, and reprogram its properties after fabrication. By integrating mass transport, reversible polymerization, and controlled catalysis, the material achieves on‐demand changes in size, shape, and mechanical properties.
Jiahe Huang, Haohui Zhang, Jiehao Chen, Xuelin Sui, Febby Krisnadi, Dongjing He, Huajian Ji, Will R. Gutekunst, Michael D. Dickey, Yuhang Hu   +9 more
wiley   +1 more source

Review on Multifunctional Pattern and Polarization Reconfigurable Antennas

IEEE Access
This paper presents a detailed review of multifunctional pattern and polarization reconfigurable antennas, highlighting their potential to enhance performance of the wireless communication systems. These adaptable antennas offer versatile functionalities,
Venkataswamy Suryapaga, Vikas V. Khairnar   +1 more
doaj   +1 more source

Pixel reconfigurable antennas: Towards low-complexity full reconfiguration

2016 10th European Conference on Antennas and Propagation (EuCAP), 2016
The explosive growth of wireless communications has brought new requirements in terms of compactness, mobility and multi-functionality that make reconfigurable antennas excellent candidates for future wireless networks. Pixel antennas are particularly interesting due to their ability to dynamically reshape its active surface to change their properties.
Rodrigo López, Daniel, Romeu Robert, Jordi, Cetiner, Bedri Artug, Jofre Roca, Lluís   +3 more
openaire   +2 more sources

Machine Learning–Assisted Bio‐Interfacial Engineering Resolves Structural–Functional Conflicts in Nanocomposites

Advanced Materials, EarlyView.
A machine learning‐guided bio‐interfacial design strategy resolves the long‐standing strength–toughness–functionality trade‐off in nanocomposites. By efficiently mapping high‐performance regions in the composition–processing space, the approach delivers hierarchically entangled, nanosheet‐pinned architectures that combine mechanical robustness ...
Hao Wang, Xianfeng Chen, Peiyao Yan, Siqi Liu, Biaobiao Yan, Junhua Kong, Siew Lang Teo, Kai Jin, Jie Zhang, Ping Koy Lam, Chaobin He   +10 more
wiley   +1 more source

A novel reconfigurable band-notched ultra-wideband slot antenna for cognitive radio systems

Dianzi Jishu Yingyong, 2019
A novel printed ultra-wideband(UWB) slot antenna with reconfigurable band-notched characteristics for cognitive radio(CR) applications is presented. An improved rectangular monopole antenna is used as the basic model and a tangential rectangular floor is
Lv Xinmeng, Jiang Xuanyou, Ma Wentao, He Wanbing   +3 more
doaj   +1 more source

Freeform Manufacturing of Plant‐Based Structural Colors for Scalable Photonic and Mechanochromic Devices

Advanced Materials, EarlyView.
A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song, Peiqi Niu, Wenxi Gu, Chun Lam Clement Chan, Jiuhong Yi, Xu Liu, Peng Tan, Chon In Haydn Cheong, Qingwen Guan, Dan Fang, Bingpu Zhou, Zi Liang Wu, Ji Liu, Yan Yan Shery Huang, Iek Man Lei   +14 more
wiley   +1 more source

Tunable multiband microstrip antenna for 5GHz WLAN [PDF]

, 2013
Copyright @ 2013. Ali Ejaz, R. Nilavalan & Hattan Abutarboush. This is a research/review paper, distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License http://creativecommons.org/licenses/by-nc/3.0 ...
Abutarboush, H, Ejaz, A, Nilavalan, R
core