Results 61 to 70 of about 14,576 (298)
Electromagnetic ScienceRecent explorations and advancements in communications systems have sparked a renewed fascination with beam-steerable high-gain antennas. While conventional active phased arrays have been long seen as a feasible solution, the associated cost is a major ...
Kayode Adedotun Oyesina, Alex M. H. Wong
doaj +1 more source
Directive Stacked Patch Antenna for UWB Applications
International Journal of Antennas and Propagation, 2013 Directional ultrawideband (UWB) antennas are popular in wireless signal-tracking and body-area networks. This paper presents a stacked microstrip antenna with an ultrawide impedance bandwidth of 114%, implemented by introducing defects on the radiating ...
Sharif I. Mitu Sheikh +2 more
doaj +1 more source
Application of adaptive antenna technology to third generation radio architectures [PDF]
, 1994 Work at Bristol has considered the application of adaptive antenna technology to a mixed cell architecture employing DS-CDMA as the air interface. In the scenario considered, both the umbrella cells and the underlying micro cells operate within the same ...
Beach, MA, Swales, SC, Tsoulos, GV
core +2 more sources
Molecular Oncology, EarlyView.Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff +11 more
wiley +1 more source
Electrically Small Supergain Arrays
, 2007 The theory, computer simulations, and experimental measurements are presented for electrically small two-element supergain arrays with near optimal endfire gains of 7 dB.
A. D. Yaghjian +43 more
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Magneto-Electric Dipole Antenna Arrays [PDF]
, 2014 A planar magneto-electric (ME) dipole antenna array is proposed and demonstrated by both full-wave analysis and experiments. The proposed structure leverages the infinite wavelength propagation characteristic of composite right/left-handed (CRLH ...
Caloz, Christophe +2 more
core +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
Active coated nano rod antennas for enhanced and directive scattering phenomena
EPJ Applied Metamaterials, 2019 The scattering properties of a range of symmetric and asymmetric active coated nano rod antennas are investigated numerically. The active nano rods are composed of a silica dioxide nano-core coated with a silver nano-shell, and with a canonical gain ...
Arslanagić Samel, Jacobsen Rasmus E.
doaj +1 more source
Sensors, 2021 We demonstrate a concept for a large enhancement of the directivity and gain of readily available cm- and mm-wave antennas, i.e., without altering any property of the antenna design.
Jéssica A. P. Ribeiro +4 more
doaj +1 more source
Massive MIMO Extensions to the COST 2100 Channel Model: Modeling and Validation
, 2019 To enable realistic studies of massive multiple-input multiple-output systems, the COST 2100 channel model is extended based on measurements. First, the concept of a base station-side visibility region (BS-VR) is proposed to model the appearance and ...
Edfors, Ove +3 more
core +1 more source