Results 21 to 30 of about 3,368,646 (281)

Broadband Low-RCS Linearly Polarized Metasurface–Based Antenna

International Journal of Antennas and Propagation
In this paper, a broadband linearly polarized (LP) metasurface (MS)–based antenna with low radar cross section (RCS) over a wideband is proposed. The radiation and scattering mechanisms of the antenna are analyzed under the guidance of characteristic ...
Jinhong Luo, Yongtao Jia, Gang Shi, Zhongxun Liu, Jiahao Zhang, Ying Liu   +5 more
doaj   +1 more source

Design of Low-SAR High-Efficiency Terminal Antenna Using Magnetic Field Homogenization

Micromachines
A low-SAR high-efficiency terminal antenna based on the magnetic field homogenization is proposed in this paper. Starting from the spatial correlation between the antenna’s near-field tangential magnetic field hotspots and SAR distribution, the influence
Sihan Xiao, Yong-Chang Jiao, Ziming Lv, Liupeng Zan, Zibin Weng   +4 more
doaj   +1 more source

Research on ultra wideband radar life detection technology

Gong-kuang zidonghua, 2023
Ultra wideband (UWB) radar life detection technology has the advantages of low power consumption, good penetration, and high confidentiality. It is beneficial for improving the survival rate of trapped personnel after disasters. This paper systematically
ZHAO Youxin, YAO Haifei, LI Jiahui, PENG Ran, LI Xun   +4 more
doaj   +1 more source

The radar signature of the Wind Lens: a less disruptive wind turbine? [PDF]

, 2012
We study the radar signature of a new type of wind turbine, named the Wind Lens. This design includes a flanged shroud around the turbine which concentrates the wind flow past the turbine blades and hence improves the efficiency.
H. Griffiths, Griffiths, Hugh D., T. Matsuura, A. Balleri, A. Al-Armaghany, Al-Armaghany, A., Tong, Kenneth, K. Tong, Balleri, Alessio, Matsuura, Takashi   +9 more
core   +1 more source

Discovery of Energy‐Localized Trap States via Opto‐Electrical Spectroscopy in UWBG Perovskite La:SrSnO3 FETs

Advanced Functional Materials, EarlyView.
Combined UV–vis transmittance and wavelength‐dependent photo‐assisted DC I–V analyses reveal defect‐induced optical instability and a high density of deep donor‐like subgap traps in La‐doped SrSnO3. The resulting MOSFET achieves one of the highest on/off ratios reported for ABO3 perovskite devices, demonstrating the promise of stannate perovskites as ...
Sojin Jung, Junghyun Koo, Hongseung Lee, Donghwan Kim, Dongho Won, Weideng Sun, Jaewook Yoo, Minah Park, Seohyeon Park, Seongbin Lim, Joonsung Lee, Sungjune Park, Sangmoon Yoon, Tae Wan Kim, Bharat Jalan, Gang Qiu, Kiyoung Lee, Hagyoul Bae   +17 more
wiley   +1 more source

The dependence of radar target detectability on array weighting function [PDF]

, 2009
Presented at the IET-Radar 2007 Conference Edinburgh 15-18 October 2007This paper describes simulation work to assess the detectability of targets by an airborne fire control radar (FCR) operating in a medium pulse repetition frequency (PRF) mode in ...
Alabaster, Clive M., Hughes, Evan J.
core   +6 more sources

Design and Analysis of Ultra-Thin Broadband Transparent Absorber Based on ITO Film

Micromachines
In this paper, we design an ultra-thin broadband transparent absorber based on indium tin oxide (ITO) film, and we choose polymethyl methacrylate (PMMA) high-transmittance dielectric sheet instead of the traditional dielectric sheet and polyethylene ...
Zibin Weng, Yahong Li, Youqian Su, Zechen Li, Jingnan Guo, Ziming Lv, Chen Liang   +6 more
doaj   +1 more source

Reservoir‐Driven Neuromorphic Computing Based on Composite Rare‐Earth/Transition Metal Oxide Memristor

Advanced Functional Materials, EarlyView.
A defect‐engineered Ag/Gd2O3:Nb2O5/Pt rare earth composite oxide memristor enables stable multilevel reservoir states through pulse driven conductance modulation. Experimentally measured device responses are incorporated into a device aware reservoir computing framework for CIFAR‐100 image classification, highlighting the potential of rare earth ...
Hammad Ghazanfar, Haider Abbas, Muhammad Rabeel, Honggyun Kim, Ghulam Dastgeer, Muhammad Nasim, Furqan Zahoor, Yawar Abbas, Waqas Ahmad, Deok‐kee Kim   +9 more
wiley   +1 more source

A TM₀₁-TE₁₁ Circular Waveguide Mode Converter on the Basis of Dielectric Filling

Micromachines
In this paper, a dielectric-filled circular waveguide TM01-TE11 mode converter is proposed, which has high conversion efficiency and a wide operating bandwidth.
Zibin Weng, Ziming Lv, Liupeng Zan, Sihan Xiao, Chen Liang   +4 more
doaj   +1 more source

Simulation of hailstorm event using Mesoscale Model MM5 with modified cloud microphysics scheme [PDF]

Annales Geophysicae, 2008
Mesoscale model MM5 (Version 3.5) with some modifications in the cloud microphysics scheme of Schultz (1995), has been used to simulate two hailstorm events over Gangetic Plain of West Bengal, India. While the first event occurred on 12 March 2003 and
P. Chatterjee, D. Pradhan, U. K. De
doaj   +1 more source