Results 51 to 60 of about 155,916 (298)
Quad-Band 3D Rectenna Array for Ambient RF Energy Harvesting
International Journal of Antennas and Propagation, 2020 This paper presents a quad-band, 3D mountable rectenna module for ambient energy harvesting. With the aim of powering up Internet of Things (IoT) nodes in practical ambient environments, a hybrid approach of combining power, both at RF and DC, is adopted
Fatima Khalid +4 more
doaj +1 more source
A Multi-Band Magneto-Electric Dipole Antenna With Wide Beam-Width
IEEE Access, 2020 A multi-band and wide beam-width magneto-electric (ME) dipole antenna is proposed in this report. The proposed antenna has a simple structure, which consists of four $\Gamma $ -shaped electric plates which can change the current distribution and realize ...
Guangwei Yang +4 more
doaj +1 more source
1-bit reconfigurable transmitarray with low loss and wide bandwidth
New Journal of Physics, 2021 We present a novel X-band 1-bit reconfigurable transmitarray with excellent polarization conversion. The basic element consists of two layers of metal patterns connected by a metal through-hole and feed structures.
Wen Hua Gao +6 more
doaj +1 more source
Dual-Frequency Linear-to-Circular Polarization Converter for Ka-Band Applications
Sensors, 2022 A dual-band linear-to-circular planar polarization converter based on a multilayer printed circuit board (PCB) is proposed and demonstrated. Each cell of the periodic surface is formed by six substrate layers separated by five foam spacers. The three top
Francesco Greco, Emilio Arnieri
doaj +1 more source
, 2018 This paper presents an evaluation of distortion and interference sources, namely, the harmonic distortion and antenna crosstalk, originating within a 2 x 2 millimeter-wave (mm-wave) multiple-input-multiple-output (MIMO) testbed.
Buisman, Koen +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar +6 more
wiley +1 more source
X-Band Dual Circularly Polarized Patch Antenna With High Gain for Small Satellites
IEEE Access, 2019 This paper presents an X-band circularly polarized patch antenna with a simulated high gain of 12.5 dBi and a simulated side-lobe-level of below -20 dB, within the bandwidth of 5.2%.
Paolo Squadrito +2 more
doaj +1 more source
Millimeter Light Curve with Abrupt Jump in Cyg X-3 2008 April-May Outburst
, 2010 Cyg X-3 is a well-known microquasar with a bipolar relativistic jet. Its famous giant radio outbursts have been repeated once every several years. However, the behavior of the millimeter wave emission has remained unclear because of limitations of time ...
Kotani, Taro +3 more
core +1 more source
A millimeter-wave slot-V antenna [PDF]
, 1992 A V-shaped slot antenna built on a dielectric substrate is presented. The antenna is a nonresonant, traveling-wave design, with a predicted impedance in the range from 50 Ω to 80 Ω. Calculations indicate that this antenna should have a gain of 15 dB with
Moussessian, Alina, Rutledge, David B.
core +1 more source
Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials
Advanced Engineering Materials, EarlyView.Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai +2 more
wiley +1 more source