Results 41 to 50 of about 29,953,595 (347)
IEEE Access, 2018 In this paper, an aperture efficient wideband high-gain patch antenna is designed using a novel multilayer-based metamaterial structure combined with a reactive impedance surface (RIS)-backed patch antenna.
Basudev Majumder +2 more
doaj +1 more source
IEEE Access, 2019 The development of wireless and satellite communication has led to a demand for high-performance microwaves and mm-wave components in terms of cost, losses, and fabrication complexity.
Syed M. Sifat +3 more
doaj +1 more source
High Refractive Index Metamaterial Superstrate for Microstrip Patch Antenna Performance Improvement
Frontiers in Physics, 2020 We propose a high refractive index metamaterial (HRIM)that is composed of two identical patch arrays symmetrically etched on both sides of a dielectric plate.
Xi Gao, Yan Zhang, Simin Li
doaj +1 more source
High speed InAs electron avalanche photodiodes overcome the conventional gain-bandwidth product limit [PDF]
, 2011 High bandwidth, uncooled, Indium Arsenide (InAs) electron avalanche photodiodes (e-APDs) with unique and highly desirable characteristics are reported. The e-APDs exhibit a 3dB bandwidth of 3.5 GHz which, unlike that of conventional APDs, is shown not to
David, John P. R. +4 more
core +1 more source
High-Gain Magnetized Inertial Fusion
Physical Review Letters, 2012 Magnetized inertial fusion (MIF) could substantially ease the difficulty of reaching plasma conditions required for significant fusion yields, but it has been widely accepted that the gain is not sufficient for fusion energy. Numerical simulations are presented showing that high-gain MIF is possible in cylindrical liner implosions based on the MagLIF ...
Stephen A, Slutz, Roger A, Vesey
openaire +3 more sources
Printed subthreshold organic transistors operating at high gain and ultralow power
Science, 2019 Low-power organic transistors For internet-of-things applications, transistors that deliver high signal amplification (high gain) at low power will help conserve power and extend battery life. Jiang et al.
Chen Jiang +5 more
semanticscholar +1 more source
Detection of sub-shot-noise spatial correlation in high-gain parametric down-conversion [PDF]
, 2004 Using a 1GW-1ps pump laser pulse in high gain parametric down-conversion allows us to detect sub-shot-noise spatial quantum correlation with up to one hundred photoelectrons per mode, by means of a high efficiency CCD.
A. Gatti +14 more
core +2 more sources
A High Gain and Wideband Narrow-Beam Antenna for 5G Millimeter-Wave Applications
IEEE Access, 2020 A wideband antenna with a high gain and narrow beam-width for future 5G communication systems is presented in this research. The antenna operates in 28 GHz 5G band with a large 35.53% bandwidth ranging from 23.41-33.92 GHz.
H. Ullah, F. A. Tahir
semanticscholar +1 more source
IET Microwaves, Antennas & PropagationThis paper proposes a polarisation‐insensitive absorptive metamaterial unit cell that achieves a perfect absorption of circularly polarised (CP) incident waves. To overcome the miniaturisation limitations inherent in conventional metamaterial designs, an
Guanjun Wang +4 more
doaj +1 more source
High-Gain Dual-Band Dual-Sense Circularly Polarized Spiral Series-Fed Patch Antenna
IEEE Open Journal of Antennas and Propagation, 2022 This paper demonstrates a dual-band circularly polarized (CP) two-dimensional (2D) series-fed patch array antenna. The CP rotating sense in each band is opposite to each other, which makes them well-suited for the downlink and uplink in satellite ...
Nghia Nguyen-Trong +2 more
doaj +1 more source