Results 21 to 30 of about 18,390 (268)
IEEE Access, 2019 In this paper, the development of a millimeter-wave hybrid beamforming (HBF) transceiver system for 5G millimeter-wave multiple-input-multiple-output (MIMO) communication is presented.
Ruoqiao Zhang +4 more
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Combined Single-Layer K-Band Transmitarray and Beamforming S-Band Antenna Array for Satcom
IEEE Open Journal of Antennas and Propagation, 2022 In this paper, a dual-band antenna at 4.5 GHz and 25 GHz is presented. The antenna is a low-frequency phased patch antenna array combined with a high-frequency transmitarray with a fixed beam.
Daniel Edelgaard Serup +2 more
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Nanophotonics, 2022 Metasurfaces have attracted significant attention in recent years due to their unprecedented light-manipulation abilities. However, most metasurfaces so far have relied on external light excitation, prohibiting them from full on-chip integration ...
Wu Geng-Bo +3 more
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User Impact on Phased and Switch Diversity Arrays in 5G Mobile Terminals
IEEE Access, 2018 In this paper, a mobile terminal phased array at 28 GHz with different scan angles is compared with a switch diversity antenna array at 28 GHz in the case of antenna beams pointing at the user's body.
Igor Syrytsin +2 more
doaj +1 more source
A Non-Linear Correction Method for Terahertz LFMCW Radar
IEEE Access, 2020 The nonlinearity in terahertz (THz) linear frequency modulated continuous wave (LFMCW) radar usually blurs the range profile and decreases the signal to noise ratio, hampering applications where high range-resolution is particularly emphasized.
Yade Li +5 more
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Wide-Band and Wide-Angle Scanning Phased Array Antenna for Mobile Communication System
IEEE Open Journal of Antennas and Propagation, 2021 A wide-band phased array antenna with wide-angle scanning capability for mobile communication system is proposed in this article. An air cavity is properly embedded into the substrate under each array element.
Guangwei Yang, Yiming Zhang, Shuai Zhang
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Millimeter-wave detection of landmines
SPIE Proceedings, 2013 Millimeter wave absorption relative to background soil can be used for detection landmines with little or no metal content. At these frequencies, soil and landmine absorb electromagnetic energy differently. Stepped frequency measurements from 20 GHz to 60 GHz were used to detect buried surrogate landmines in the soil.
Ozturk, Hilmi +6 more
openaire +3 more sources
Millimeter-wave compressive holography [PDF]
Applied Optics, 2010 We describe an active millimeter-wave holographic imaging system that uses compressive measurements for three-dimensional (3D) tomographic object estimation. Our system records a two-dimensional (2D) digitized Gabor hologram by translating a single pixel incoherent receiver. Two approaches for compressive measurement are undertaken: nonlinear inversion
Cull, Christy Fernandez +4 more
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Squeezing Millimeter Waves into Microns [PDF]
Physical Review Letters, 2004 Microstructured metallic devices will play a vital role in the continuing search to manipulate the passage of electromagnetic radiation relevant to optical, microwave, and communication technologies. Here, we investigate the electromagnetic response of a completely novel and ultrathin (
Hibbins, Alastair P. +3 more
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Leida xuebao, 2018 Two important issues must be considered when modeling the terahertz (THz) wave scattering behavior using microwave EM methods. The first is the material response characteristics, including the metallic materials that may be beyond the scope of the Drude ...
Chen Hui +4 more
doaj +1 more source