Results 21 to 30 of about 8,123 (253)
Frontiers in Communications and Networks, 2021 This paper presents a design methodology focused on feeding networks that can improve the insertion loss and coverage efficiencies of millimeter-wave (mm-Wave) phased arrays in mobile terminals.
Jae-Yeong Lee +4 more
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Transmit beampattern design for airborne phased-MIMO radar
The Journal of Engineering, 2019 Airborne phased-MIMO radar based on sub-arrays is investigated that can combine the advantages of both MIMO radar and phased array radar. The transmit beampattern design method for airborne phased-MIMO radar is proposed that can control the transmit beam
Ye Dong, Fengfeng Cheng, Lanying Cao
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Generating amplitude acoustic patterns by mechanically shifting the emitters of an array [PDF]
AIP AdvancesAcoustic patterns are employed for particle patterning, targeted therapeutic ultrasound, or 3D printing. Patterns are generated using phased-arrays that electronically control each emitter or using passive structures that modulate the wave-field.
M. Aldea +5 more
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IET Microwaves, Antennas & Propagation, 2023 The detection and stealth abilities of array antennas depend mainly on the antennas' radiating and scattering performance, respectively. However, the operating environmental loads and assembly lead to serious structural errors, including deformation and ...
Yan Wang +10 more
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Genome-wide nucleosome positioning is orchestrated by genomic regions associated with DNase I hypersensitivity in rice. [PDF]
PLoS Genetics, 2014 Nucleosome positioning dictates the DNA accessibility for regulatory proteins, and thus is critical for gene expression and regulation. It has been well documented that only a subset of nucleosomes are reproducibly positioned in eukaryotic genomes.
Yufeng Wu, Wenli Zhang, Jiming Jiang
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IEEE Access, 2020 Ultrasonic phased array technology is used in various fields. Traditional full phased arrays place elements in every position of a uniform lattice with half-wavelength spacing between the lattice points, so the hardware cost is very high.
Han Zhang +3 more
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A Foldable Tightly Coupled Crossed Rings Antenna Array of Ultrawide Bandwidth and Dual Polarization
IEEE Access, 2022 Low-profile foldable array antennas are becoming increasingly more important for a wide range of applications such as satellite communications and wearable electronic devices.
Yanwei Fu +5 more
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Geometric Phase in Phasing of Antenna Arrays [PDF]
Symposium - International Astronomical Union, 2002 The response of a pair of differently polarized antennas is determined by their polarization states and a phase between them which has a geometric part which becomes discontinuous at singular points in the parameter space. Some consequences are described.
openaire +2 more sources
Pulse Dispersion in Phased Arrays
International Journal of Antennas and Propagation, 2017 Phased array antennas cause pulse dispersion when receiving or transmitting wideband signals, because phase shifting the signals does not align the pulse envelopes from the elements.
Randy L. Haupt, Payam Nayeri
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A compact SiGe D-band power amplifier for scalable photonic-enabled phased antenna arrays
Scientific Reports, 2023 To address the rising demand for high-speed wireless data links, communication systems operating at frequencies beyond $${100}\,\hbox {GHz}$$ 100 GHz are being targeted. A key enabling technology in the development of these wireless systems is the phased
Reinier Broucke +6 more
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