Results 41 to 50 of about 4,022 (224)

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

RADAR CROSS SECTION CHARACTERIZATION OF CORNER REFLECTORS IN DIFFERENT FREQUENCY BANDS AND POLARIZATIONS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Corner Reflectors (CR) are standard passive radar targets which offer one of the best solutions for SAR calibration. Radar Cross Section (RCS) of corner reflectors plays a vital role for estimation of calibration parameters and hence back scatter ...
P. V. Jayasri, K. Niharika, K. Yedukondalu, E. V. S. Sita Kumari, A. V. V. Prasad   +4 more
doaj   +1 more source

Dimensional Engineering of Wet‐Spun MOF‐Based Woven Fabrics for Superior Electromagnetic Wave Absorption

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work fabricated MOF‐based woven absorbing fabrics with dimensional engineering via a wet spinning strategy. The absorbing fabrics achieve a reflection loss of −51.47 dB at 2.9 mm, with an effective absorption bandwidth reaching 3.54 GHz. The absorbing fabrics can be freely bent, stretched, and folded, with individual fibers exhibiting a break ...
Zihao Yan, Liyuan Guan, Qing Liu, Junhao Lin, Jianyong Yu, Bin Ding, Zhaoling Li   +6 more
wiley   +1 more source

Radar cross-section estimation in reverberation chambers

, 2020
International audienceThis chapter is dedicated to recent advances in a rather unexplored range of applications. It deals with the ability of performing radar cross-section (RCS) measurements, using a reverberation chamber (RC).
Besnier, Philippe, Philippe Besnier
core   +1 more source

Marine Radar Target Ship Echo Generation Algorithm and Simulation Based on Radar Cross-Section

Journal of Marine Science and Engineering
In this study, a simplified radar echo signal model suitable for radar simulators and a Radar Cross-Section (RCS) calculation model based on the Physical Optics (PO) method was developed.
Chang Li, Xiao Yang, Hongxiang Ren, Shihao Li, Xiaoyu Feng   +4 more
doaj   +1 more source

Purification and Properties of Polyvinyl Nitrate and Its Compatibility With Solid Oxidizers

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Polyvinyl nitrate (PVN) is a nitrate‐ester energetic binder that can be produced directly from polyvinyl alcohol—a cheap commodity feedstock—thereby offering potential cost and supply‐chain advantages over binders based on nitrocellulose and other specialty polymers.
Stephen Spice, Monica C. Chandwani, Carole A. Morrison, Colin R. Pulham   +3 more
wiley   +1 more source

Regulating the Dielectric Behavior of Conductive Polymers Through Vapor Phase Infiltration for Tunable Microwave Absorption

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
Vapor phase infiltration (VPI) enables atomic‐level dielectric regulation in conductive polymer foams. The VPI‐treated foam exhibits enhanced absorption efficiency per unit thickness (~2.6 times), dynamic frequency tunability (94.5% coverage in 2–18 GHz), and on/off switching ability while retaining performance under acid/alkali exposure and repeated ...
Pengpeng Mou, Jinchuan Zhao, Xiao Liu, Lihong Wu, Xin Li, Gengping Wan, Guizhen Wang   +6 more
wiley   +1 more source

Measurement of diffraction radar cross-section(RCS)

Electronics Letters, 2000
A technique is described for measuring the RCS of 2D (two-dimensional) diffracting sources. The measured and predicted diffraction RCS of a conducting halfplane edge and a gap in an otherwise infinite conducting plane are presented. The technique may be used to measure the diffraction coefficient of an impedance discontinuity.
openaire   +1 more source

Analyzing the electromagnetic scattering characteristics for plasma targets based on shooting and bouncing ray method

AIP Advances, 2019
The analysis of radar target electromagnetic scattering characteristics is the basis of radar target detection, imaging and recognition. The high-frequency algorithm shooting and bouncing ray (SBR) method is used to calculate the radar cross section (RCS)
Junyang Zhou, Yiping Han
doaj   +1 more source

Infrared‐Microwave Compatible Stealth Transparent Metasurface With Digital Camouflage and Hybrid Absorption‐Scattering

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
Traditional metasurfaces suffer from the drawbacks of pure microwave absorption and low IR emissivity stealth, namely failing to match complex ambient backgrounds with varying IR emissivity and generating excess heat accumulation (enhanced IR thermal radiation).
Dan Liu, Yanzhao Wang, Kefeng Ji, Huanhuan Gao, Sihong Zhou, Tong Liu, He‐Xiu Xu   +6 more
wiley   +1 more source