Results 31 to 40 of about 347,807 (287)
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
doaj +1 more source
Photonic wideband phased array: an optical time steered antenna based on a new true time delay unit [PDF]
, 2006 L’attività di ricerca svolta durante il corso di dottorato e descritta dettagliatamente all’interno della tesi è stata diretta al progetto di una innovativa rete ottica di formazione del fascio per antenne a schiera a banda larga esenti dal fenomeno del ...
Curcio, Claudio
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
The microbiome in human skin aging
FEBS Letters, EarlyView.Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana +3 more
wiley +1 more source
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
doaj +1 more source
Phased array systems in silicon
IEEE Communications Magazine, 2004 Phased array systems, a special case of MIMO systems, take advantage of spatial directivity and array gain to increase spectral efficiency. Implementing a phased array system at high frequency in a commercial silicon process technology presents several challenges.
Ali Hajimiri +5 more
openaire +3 more sources
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
MOSAIC: A Scalable reconfigurable 2D array system for NDT [PDF]
, 2008 This paper documents the development of a scalable 2D array system, or Mosaic that can be targeted at a wide range of NDT applications by way of a reconfigurable tile that can be tessellated to form arrays of any size and shape.
Afroukh, F. +16 more
core +1 more source