Results 221 to 230 of about 776,777 (280)

Wideband patch antenna with enhanced gain stability for sub-6 GHz 5G applications. [PDF]

Sci Rep
Vijayadheeswar Reddy S, Kumar J.
europepmc   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

Advanced Materials Interfaces, Volume 13, Issue 19, 6 October 2026.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood, Mingxuan Li, Vahid Rad, Mehdi Zarei, Chen‐Yu Yeh, Masoud Soroush, Guangyong Li, Paul W. Leu   +7 more
wiley   +1 more source

Sixty-port dual-band octa-pentacle MIMO antenna for vehicular communications. [PDF]

Sci Rep
Illakiya KS, Palaniswamy SK, Kumar S, Kanagasabai M, Kannappan L, Kumar DB, Hemanth S, Goyal B, Soliman NF, Algarni AD.   +9 more
europepmc   +1 more source

Comprehensive evaluation of a tri-band MIMO antenna with SAR and MIMO performance for 5G devices. [PDF]

Sci Rep
Murugeswari S, Dhananjeyan R, Suganthy M, Selvakumar S, Sundaravadivel P, Kumar DR.   +5 more
europepmc   +1 more source

Prospects and challenges in developing the next generation astronomical sub-millimetre and terahertz heterodyne receivers. [PDF]

Astrophys Space Sci
Tan BK.
europepmc   +1 more source

Compact dual-slot antenna with enhanced bandwidth for multi-band wireless and satellite systems. [PDF]

Sci Rep
Shivakumar BR, Pallavi M.
europepmc   +1 more source

Design of an Ultra-Wideband MIMO Antenna with Open-Slot Structures for 5G Metal-Frame Smartphones. [PDF]

Sensors (Basel)
Chen L, Bai J, Gu H.
europepmc   +1 more source

Development of Wideband Circular Microstrip Patch Antenna for Use in Microwave Imaging for Brain Tumor Detection. [PDF]

Sensors (Basel)
Özmen H, Wu M, Dalarsson M.
europepmc   +1 more source

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Ultra wideband antenna

IEEE Communications Magazine, 2004
Ultra wideband antennas are specifically designed to transmit and/or receive very short time durations of electromagnetic energy. It is well known that UWB antenna design remains the major factor in the progress of UWB technology. This article describes a study of conventional antennas and why they are not suitable for a UWB system.
Kamya Yekeh Yazdandoost, Ryuji Kohno
exaly   +2 more sources

Ultra-wideband sources and antennas

Ultra- Wideband Short-Pulse Electromagnetics 4 (IEEE Cat. No.98EX112), 2002
Ultra-Wideband (UWB) sources and antennas are of interest for a variety of potential applications that range from transient radar systems to communications systems. In this paper, we discuss the research issues and progress being made in gas, oil and solid state switching, UWB sources, and antennas.
William D. Prather, Forrest J. Agee, Carl E. Baum, Jane M. Lehr, James P. O’Loughlin, Jeffrey W. Burger, Jon S. H. Schoenberg, David W. Scholfield, Robert J. Torres, Jonathan P. Hull, John A. Gaudet   +10 more
openaire   +1 more source