Results 41 to 50 of about 16,921 (260)

MULTIELEMENT SYSTEMS OF CIRCUMFERENTIAL SLOTS ON A COAXIAL LINE SCREEN

Radio Physics and Radio Astronomy, 2017
Purpose: The electrodynamic characteristics of circumferential slot arrays on a coaxial line shield and the ways of their control by changing the feeder, array geometrical parameters and electrophysical parameters of internal and external spaces are ...
V. A. Katrich, V. A. Lyashchenko, N. V. Medvedev   +2 more
doaj   +1 more source

Multidimensional Index Modulation in Wireless Communications

, 2017
In index modulation schemes, information bits are conveyed through indexing of transmission entities such as antennas, subcarriers, times slots, precoders, subarrays, and radio frequency (RF) mirrors.
Bhat, Sandeep, Chockalingam, A., Jacob, Swaroop, Shamasundar, Bharath   +3 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

Advanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang, Jiaqi Zhang, Mei Cui, Wei Qi, Renliang Huang, Rongxin Su, Kai Zhang   +6 more
wiley   +1 more source

A Wideband Circularly Polarized Antenna Array Using Irregularly Shaped Hexagonal Slot Optimized by Iterative Taguchi’s Method

IEEE Access
This study proposes a novel 2.45 GHz wideband $2\times 2$ circularly polarized (CP) slot antenna array, which consists of irregularly hexagonal slot CP antenna elements and a sequentially rotated phase feed network.
Wei-Chung Weng, Chi-Keong Wong
doaj   +1 more source

Antenna-coupled TES bolometers used in BICEP2, Keck array, and SPIDER

, 2015
We have developed antenna-coupled transition-edge sensor (TES) bolometers for a wide range of cosmic microwave background (CMB) polarimetry experiments, including BICEP2, Keck Array, and the balloon borne SPIDER. These detectors have reached maturity and
A. D. Turner, A. G. Vieregg, A. Orlando, A. S. Rahlin, A. Trangsrud, A. Weber, B. G. Keating, C. A. Bischoff, C. B. Netterfield, C. D. Dowell, C. D. Reintsema, C. D. Sheehy, C. L. Kuo, C. L. Wong, C. Pryke, D. Barkats, D. V. Wiebe, E. Bullock, E. M. Leitch, G. C. Hilton, G. Chattopadhyay, G. Davis, G. P. Teply, H. G. LeDuc, H. Hui, H. T. Nguyen, I. Buder, J. A. Bonetti, J. A. Brevik, J. E. Tolan, J. J. Bock, J. M. Kovac, J. P. Filippini, J. P. Kaufman, J. Zmuidzinas, K. D. Irwin, K. Megerian, K. S. Karkare, K. W. Yoon, L. Duband, L. Moncelsi, M. Amiri, M. C. Runyan, M. Halpern, M. Hasselfield, M. Lueker, N. Llombart, null null, P. A. R. Ade, P. K. Day, P. Mason, P. Wilson, R. O’Brient, R. S. Tucker, R. Schwarz, R. V. Sudiwala, R. W. Aikin, R. W. Ogburn IV, S. A. Kernasovskiy, S. Fliescher, S. J. Benton, S. Kefeli, S. R. Golwala, S. R. Hildebrandt, S. Richter, V. Hristov, W. C. Jones, Z. K. Staniszewski   +67 more
core   +1 more source

New‐Era Polymer Thermoelectrics: Material Innovations, Doping Frontiers, Decoupling Strategies, and Unconventional Applications

Advanced Materials, EarlyView.
The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley   +1 more source

Gapwaveguide Automotive Imaging Radar Antenna With Launcher in Package Technology

IEEE Access, 2023
A 77 GHz gapwaveguide radar antenna system with launcher-in-package (LiP) technology is presented in this paper for automotive imaging applications. Firstly, state-of-the-art LiP technology integrated with radar transceivers is proposed. The transceivers
Qiannan Ren, Carlo Bencivenni, Giorgio Carluccio, Harshitha Thippur Shivamurthy, Anton De Graauw, Feike Jansen, Jian Yang, Ashraf Uz Zaman   +7 more
doaj   +1 more source

Microstrip Patch Antennas Fed by Substrate Integrated Waveguide [PDF]

, 2013
Dizertační práce je zaměřena na výzkum mikropáskových flíčkových antén a anténních řad napájených vlnovodem integrovaným do substrátu (SIW). Využitím vlnovodu integrovaného do substrátu pro napájení mikropáskové flíčkové antény dochází ke kombinaci ...
Mikulášek, Tomáš
core