Results 101 to 110 of about 22,763 (260)

Multiband Omnidirectional Invisibility Cloak

Advanced Science
AbstractTransformation optics (TO) provides a powerful tool to manipulate electromagnetic waves, enabling the design of invisibility cloaks, which can render objects invisible. Despite many years of research, however, invisibility cloaks experimentally realized thus far can only operate at a single frequency.
Xiaojun Hu, Yu Luo, Jie Wang, Jingxin Tang, Yuan Gao, Jianhua Ren, Huilong Yu, Jingjing Zhang, Dexin Ye   +8 more
openaire   +3 more sources

Multiband Polarization Imaging

, 2020
Multiband polarization imaging is an emerging sensing method that enables simultaneous acquisition of multiband spectral and multiangle polarization information of an object of interest in the scene.
Seong G Kong, Qunnie Peng, Yongqiang Zhao, Chen Yi   +3 more
core  

Multiband-OFDM UWB vs IEEE802.11n: System Level Design Considerations

, 2006
Both Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra Wideband (UWB) technology and Multiple-Input Multiple Output (MIMO)-OFDM technology have been proposed for future wireless communications systems, supporting data-rates in excess ...
Jayalath, Dhammika, Zhang, Jian, Chen, Ying   +2 more
core   +1 more source

Optimizing Performance of Antenna Arrays with Clustered Fractal Shapes for Multiband Applications

Journal of Telecommunications and Information Technology
Fractal antennas are mainly used in multiband applications. However, these types of arrays suffer from numerous disadvantages, such as high sidelobe levels, low directivity, poor taper efficiency, and high design computational complexity. In this paper,
Jafar Ramadhan Mohammed, Dalia Ahmad Al-Khafaf   +1 more
doaj   +1 more source

A Hybrid RF Coil for Whole‐Brain Imaging in Non‐Human Primates at 7 T

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 996-1010, August 2026.
ABSTRACT Purpose Ultra‐high field MRI (≥ 7 T) offers unprecedented potential for mapping non‐human primate (NHP) brain function. However, complex electromagnetic systems are required to meet the challenges of UHF imaging and the mechanical demands of awake NHP studies.
Elias Djaballah, Éric Giacomini, Paul‐François Gapais, Michel Luong, Alexis Amadon, Qi Zhu   +5 more
wiley   +1 more source

Multiband‐structured Kalman filter

IET Signal Processing, 2018
The broadband Kalman filter (BKF) and general Kalman filter (GKF) have been proposed for the application of acoustic system identification. Here, the authors present a multiband‐structured Kalman filter (MSKF) to speed up the convergence rate of BKF and GKF for highly correlated signal.
Feiran Yang 0001, Jun Yang 0004
openaire   +1 more source

Design of Differential Single‐Block and Multi‐Block Presaturated Ultrashort Echo Time Pulse Sequences for Fast and Flexible Short‐T2 Imaging

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 711-726, August 2026.
ABSTRACT Purpose Ultrashort echo time (UTE) techniques are essential for the magnetic resonance imaging of short‐T2 signals. Current UTE techniques are time‐consuming and often require the acquisition of an inflexible volume. In this work, we implement new UTE sequences—differential single‐block presaturated UTE (δSB‐UTE) and differential multi‐block ...
Jason A. Reich, Shannon L. Taylor, Kevin D. Harkins, Rachelle L. Crescenzi, Erin L. MacMillan, Rebecca E. Feldman   +5 more
wiley   +1 more source

An Improvised Method: Ingested Pin Extraction with Multiband Ligator Barrel

Children presenting with ingestion of pins is a common presentation encountered at large-volume endoscopic departments, with potentially serious complications such as perforation.
Akshaya Sathyamurthy, Saiprasad Lad, Vinay Borkar, Motij Kumar Dalai   +3 more
core   +1 more source

Dynamical Modulation of Dual‐Band Thermal Emission in a Graphene‐2D‐hBN‐LiV2O5 Heterostructure

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
A van der Waals heterostructure combining graphene, 2D‐hBN, and LiV2O5 enables dynamically tunable dual‐band mid‐infrared thermal emission with narrow spectral features. Plasmon–phonon strong coupling yields five hybrid polariton branches, whereas coupled‐oscillator models quantify mode mixing and Rabi splittings (up to 27.72 meV via hBN‐thickness ...
Yuhui Cai, Minru Zhu, Peiyuan Huang, Qinmiao Chen, Xuening Wang, Bingfeng Fan, Yongyao Li, Jiayao Huang, Dongxu Zhao   +8 more
wiley   +1 more source

Dual-band Multi Slot Patch Antenna for Wireless Applications

Journal of Telecommunications and Information Technology, 2013
In this paper a novel configuration of broadband multi slot antenna for C/X bands is presented and analyzed. By cutting two diamond slots in the middle of the rectangular patch and three triangular slots in the right side of the patch, resonances can be
Mohammad Samsuzzaman, Mohammad Tariqul Islam, Mohammad Rashed Iqbal Faruque   +2 more
doaj   +1 more source