Results 11 to 20 of about 655,319 (295)
Use of a portable topographic mapping millimetre wave radar at an active lava flow. [PDF]
, 2006 A ground-based millimetre wave radar, AVTIS (All-weather Volcano Topography Imaging Sensor), has been developed for topographic monitoring. The instrument is portable and capable of measurements over ranges up to ∼7 km through cloud and at night.
James, M R +9 more
core +5 more sources
Millimetre wave imaging for concealed target detection [PDF]
, 2011 PhDConcealed weapon detection (CWD) has been a hot topic as the concern about pub- lic safety increases. A variety of approaches for the detection of concealed objects on the human body based on earth magnetic ¯eld distortion, inductive magnetic ¯eld,
Zhang, Lianhong
core +4 more sources
Selective Pyroelectric Detection of Millimetre Waves Using Ultra-Thin Metasurface Absorbers. [PDF]
Sci Rep, 2016 Sensing infrared radiation is done inexpensively with pyroelectric detectors that generate a temporary voltage when they are heated by the incident infrared radiation.
Kuznetsov SA +3 more
europepmc +2 more sources
Low attenuation microwave waveguides [PDF]
, 1974 PhDAn investigation of the dispersion and attenuation characteristics of cylindrical structures supporting guided electromagnetic waves with low attenuation is described.
Al-Hariri, Ali Mohammed Bakir
core +4 more sources
IEEE Journal of Microwaves, 2022 Satellite, fifth generation (5G), and sixth generation (6G) mobile communication systems operating at micro- and millimeter wave frequencies are an essential pillar in advanced network architectures for high-throughput low latency services.
Tobias Chaloun +6 more
doaj +1 more source
Harmonic information transitions of spatiotemporal metasurfaces
Light: Science & Applications, 2020 Metamaterials: Heightened harmonics from moving metasurfaces The generation of light harmonics by rapidly-changing metasurfaces could provide exciting new methods of information processing.
Haotian Wu +6 more
doaj +1 more source
Nanophotonics, 2020 In this paper, a dual-band reflective meta-hologram is designed providing two distinct information channels whose field intensity distributions can be independently manipulated at the same time.
Iqbal Shahid +5 more
doaj +1 more source
IEEE Journal of Microwaves, 2021 To support the ever-increasing demand on connectivity and datarates, multiple beam antennas are identified as a critical technology for the fifth generation (5G), the sixth generation (6G) and more generally beyond 5G (B5G) wireless communication links ...
Y. Jay Guo +2 more
doaj +1 more source
Compact parallel‐plate waveguide half‐Luneburg geodesic lens in the Ka‐band
IET Microwaves, Antennas & Propagation, 2021 A parallel‐plate waveguide half‐Luneburg geodesic lens is designed and experimentally validated in the Ka‐band. The geodesic lens profile is modulated using spline functions to reduce its height, while the symmetry halving the lens enables reduction of ...
Nelson J.G. Fonseca +2 more
doaj +1 more source
A generalized method for calculating plasmoelectric potential in non-Mie-resonant plasmonic systems
Nanophotonics, 2022 Since its first observation in 2014, plasmoelectric potential (PEP) has drawn a great deal of research interest in all-metal optoelectronics and photochemistry.
Xu Yunkun +4 more
doaj +1 more source