Magnetic Recording: Magnetic‐Pole Flip by Millimeter Wave (Adv. Mater. 48/2020)
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Materials"
DOI: 10.1002/adma.202070361
Abstract: recording methodology, “focused-millimeter-wave-assisted magnetic recording (F-MIMR)”, to drastically increase the recording density of magnetic tapes. Demonstrations are performed using magnetic films based on a series of epsilon iron oxide, ε-Fe2O3. Irradiation of the focused millimeter… read more here.
Keywords: millimeter wave; magnetic recording; magnetic pole; pole flip ... See more keywords
A Compact Two-Frequency Notch Filter for Millimeter Wave Plasma Diagnostics
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Infrared, Millimeter, and Terahertz Waves"
DOI: 10.1007/s10762-020-00701-6
Abstract: Sensitive millimeter wave diagnostics in magnetic confinement plasma fusion experiments need protection from gyrotron stray radiation in the plasma vessel. Modern electron cyclotron resonance heating (ECRH) systems take advantage of multi-frequency gyrotrons. This means that… read more here.
Keywords: frequency; millimeter; notch filter; millimeter wave ... See more keywords
Wideband Antipodal Vivaldi Antenna Using Metamaterial for Micrometer and Millimeter Wave Applications
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Infrared, Millimeter, and Terahertz Waves"
DOI: 10.1007/s10762-021-00799-2
Abstract: In this research article, a wideband antipodal Vivaldi antenna (AVA) is presented by incorporating a negative index metamaterial (NIM). The proposed antenna is designed using a linearly tapered shape structure. The overall performance of the… read more here.
Keywords: micrometer millimeter; vivaldi antenna; millimeter; antipodal vivaldi ... See more keywords
A Broadband Gap Waveguide-Based Magic-T Junction for Millimeter-Wave Applications
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Infrared, Millimeter, and Terahertz Waves"
DOI: 10.1007/s10762-021-00808-4
Abstract: A broadband magic-T junction for millimeter-wave applications is proposed in this article. Gap waveguide technology is employed to overcome fabrication and assembly challenges at millimeter-wave frequencies. The measured results for a fabricated prototype are in… read more here.
Keywords: millimeter; gap waveguide; magic junction; millimeter wave ... See more keywords
Deep Learning Architectures for Accurate Millimeter Wave Positioning in 5G
Sign Up to like & getrecommendations! Published in 2019 at "Neural Processing Letters"
DOI: 10.1007/s11063-019-10073-1
Abstract: The introduction of 5G’s millimeter wave transmissions brings a new paradigm to wireless communications. Whereas physical obstacles were mostly associated with signal attenuation, their presence now adds complex, non-linear phenomena, including reflections and scattering. The… read more here.
Keywords: architectures accurate; millimeter; learning architectures; deep learning ... See more keywords
Simultaneous generation of 40, 80 and 120 GHz optical millimeter-wave from one Mach-Zehnder modulator and demonstration of millimeter-wave transmission and down-conversion
Sign Up to like & getrecommendations! Published in 2017 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.04.043
Abstract: Abstract We demonstrate multi-frequency QPSK millimeter-wave (mm-wave) vector signal generation enabled by MZM-based optical carrier suppression (OCS) modulation and in-phase/quadrature (I/Q) modulation. We numerically simulate the generation of 40-, 80- and 120-GHz vector signal. Here,… read more here.
Keywords: vector; millimeter; generation 120; millimeter wave ... See more keywords
Planar discrete lens antenna integrated on dielectric substrate for millimeter-wave transceiver module
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Microwave and Wireless Technologies"
DOI: 10.1017/s1759078717001416
Abstract: A novel topology of high-gain millimeter-wave antenna compatible with substrate integration is presented. The antenna is composed of a planar discrete lens laid on top of a core dielectric, while the planar focal source is… read more here.
Keywords: module; millimeter; millimeter wave; planar discrete ... See more keywords
A super-heterodyne passive 35 GHz millimeter-wave imaging system for detecting hidden objects
Sign Up to like & getrecommendations! Published in 2023 at "International Journal of Microwave and Wireless Technologies"
DOI: 10.1017/s1759078723000405
Abstract: Passive millimeter-wave imaging systems (PMWIS) are employed for detecting concealed objects by mapping millimeter waves emitted from materials or living tissues. The emitted waves are measured by a receiver or radiometers without employing external wave… read more here.
Keywords: wave imaging; millimeter wave; ghz; super heterodyne ... See more keywords
Contact angle measurement of free-standing square-millimeter single-layer graphene
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-06608-0
Abstract: Square millimeters of free-standing graphene do not exist per se because of thermal fluctuations in two-dimensional crystals and their tendency to collapse during the detachment from the substrate. Here we form millimeter-scale freely suspended graphene… read more here.
Keywords: free standing; contact angle; millimeter; graphene ... See more keywords
Single-Crystal MoO3 Micrometer and Millimeter Belts Prepared from Discarded Molybdenum Disilicide Heating Elements
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-34849-y
Abstract: Single-crystal MoO3 micrometer to millimeter even centimeter belts were prepared via a novel route of oxidizing a discarded molybdenum disilicide heating element at 1000 °C for 3 h. The morphology and structure features, and growth mechanism of… read more here.
Keywords: moo3; crystal moo3; microscopy; millimeter ... See more keywords
Propagation properties of sub-millimeter waves in foggy conditions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Physics"
DOI: 10.1063/1.5083711
Abstract: The propagation of millimeter (MMW) and submillimeter (terahertz, THz) waves in the atmosphere is subject to absorptive and dispersive effects. The resulting attenuation and temporal group delay increase in cloudy and hazy weather. In this… read more here.
Keywords: propagation; millimeter; attenuation; group delay ... See more keywords