Characterizing the three‐dimensional distribution of schooling reef fish with a portable multibeam echosounder
Sign Up to like & getrecommendations! Published in 2021 at "Limnology and Oceanography: Methods"
DOI: 10.1002/lom3.10427
Abstract: Multispecies schools of small planktivorous fishes are important constituents of reefs and coastal infrastructure; however, determining the extent and distribution of these schools is challenging. Here, we describe a novel use of a low‐cost portable… read more here.
Keywords: portable multibeam; multibeam; distribution; school thickness ... See more keywords
Nonlinear dynamics of a foldable multibeam structure with one to two internal resonances
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2018.10.034
Abstract: Abstract Nonlinear dynamics of a foldable multibeam structure subjected to a base excitation with one to two internal resonances are investigated in this paper. The nonlinear partial differential governing equations of the multibeam structure is… read more here.
Keywords: foldable multibeam; one two; multibeam; multibeam structure ... See more keywords
Ammunition detection using high frequency multibeam snippet backscatter information.
Sign Up to like & getrecommendations! Published in 2018 at "Marine pollution bulletin"
DOI: 10.1016/j.marpolbul.2018.05.063
Abstract: The present study reports the evaluation of snippet backscatter information gathered with a high-frequency multibeam echosounder system (200-400 kHz) due to their usability to detect ammunition of different sizes in shallow coastal waters. Besides the feasibility… read more here.
Keywords: ammunition; snippet backscatter; backscatter; backscatter information ... See more keywords
Smart optical cross dipole nanoantenna with multibeam pattern
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-84495-0
Abstract: In this paper, an optical smart multibeam cross dipole nano-antenna has been proposed by combining the absorption characteristic of graphene and applying different arrangements of directors. By introducing a cross dipole nano-antenna with two V-shaped… read more here.
Keywords: nano antenna; pattern; cross dipole; cross ... See more keywords
Output microwave characteristics of a Ka-band relativistic klystron amplifier with spatially nonuniform multibeam electron emission
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Plasmas"
DOI: 10.1063/5.0013000
Abstract: The effects of spatial nonuniformity of electron multibeam emission on the output characteristics of a coaxial multibeam Ka-band relativistic klystron amplifier (RKA) are investigated using particle-in-cell simulations. The spatial nonuniformity is simulated using four different… read more here.
Keywords: emission areas; output microwave; output; electron ... See more keywords
mmWave multibeam phased array antenna for 5G applications
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Electromagnetic Waves and Applications"
DOI: 10.1080/09205071.2021.1917004
Abstract: A fully integrated 28 GHz, 5G mmWave microstrip phased array antenna on a multilayer substrate is presented. The proposed array provides independently steerable, simultaneous multiple beams in any arbitrary azimuth, elevation angles with equal or unequal… read more here.
Keywords: multiple beams; applications mmwave; phased array; array antenna ... See more keywords
Multibeam absolute stimulated Raman scattering and two-plasmon decay.
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review E"
DOI: 10.1103/physreve.101.043214
Abstract: Multibeam absolute instability thresholds for stimulated Raman scattering (SRS) and two-plasmon decay (TPD) are calculated in three dimensions for conditions relevant to direct-drive inertial confinement fusion experiments on the OMEGA laser and at the National… read more here.
Keywords: raman scattering; stimulated raman; multibeam absolute; plasmon decay ... See more keywords
A Multibeam Ambient Electromagnetic Energy Harvester With Full Azimuthal Coverage
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Internet of Things Journal"
DOI: 10.1109/jiot.2021.3119417
Abstract: Confronting the challenge of replacing or recharging batteries for numerous low-power devices in the Internet of Things, the harvesting of ambient electromagnetic (EM) energy is considered a promising approach. Since EM energy is randomly distributed… read more here.
Keywords: multibeam; energy; full azimuthal; ambient electromagnetic ... See more keywords
A Multibeam and Surface Plasmonic Clothing With RF Energy-Localized Harvester for Powering Battery-Free Wireless Sensor
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Internet of Things Journal"
DOI: 10.1109/jiot.2022.3142781
Abstract: A wearable radio-frequency (RF) energy-localized harvester with multiple antennas and spoof surface plasmon (SSP) structure for multibeam radiation is presented to power the Bluetooth sensor module. The harvester contains four separate antennas connected by SSP… read more here.
Keywords: harvester; multibeam; energy; power ... See more keywords
Dual-Polarization Printed Holographic Multibeam Metasurface Antenna
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"
DOI: 10.1109/lawp.2017.2743710
Abstract: Multibeam antennas have emerged as a promising concept for applications where selective beam coverage is required. Multibeam radiation can be achieved leveraging the concept of metasurfaces, enabling the radiated wavefronts to be tailored in an… read more here.
Keywords: multibeam radiation; metasurface antenna; dual polarization; multibeam ... See more keywords
A Compact Multibeam Folded Transmitarray Antenna at Ku-Band
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Antennas and Wireless Propagation Letters"
DOI: 10.1109/lawp.2021.3064217
Abstract: Multibeam antennas have found more and more applications in current and future communication systems. In this letter, a low-profile multibeam fully planar folded transmitarray antenna (FTA) based on the bifocal principle is proposed. It consists… read more here.
Keywords: multibeam; band; transmitarray; folded transmitarray ... See more keywords