Results 31 to 40 of about 25,027 (314)
GEODA-GRUA: Adaptive Multibeam Conformal Antenna for Satellites Communications
, 2011 The GEODA-GRUA is one conformal adaptive antenna array designed for satellite communications. Operating at 1.7 GHz with circular polarization, it is possible to track and communicate with several satellites at once being able to receive signals in full ...
Arias Campo, Marta +11 more
core +1 more source
ICT Express, 2019 Fractal arrays are repetitive-geometry-based smart arrays having impressive array factor properties. However, the performance of these arrays degrades owing to their large number of antenna elements at higher expansion levels. This research work presents
V.A. Sankar Ponnapalli, P.V.Y. Jayasree
doaj +1 more source
Study and Design of a Diferentially Fed Tapered Slot Antenna Array
, 2010 The results of a parametric study and design of an ultrawideband dual-polarized array of differentially-fed tapered slot antenna elements are presented. We examine arrays of bunny-ear antennas and discuss the capabilities and limitations of differential ...
Lera Acedo, Eloy de +5 more
core +1 more source
Scanned microstrip arrays using simple integrated ferrite phase shifters [PDF]
, 2000 A phase-steered microstrip antenna array is presented, suitable for application as a mobile vehicle satellite terminal. Phase shifters are implemented on a hybrid dielectric-ferrite substrate, and use is made of the phase transition near the cut-off ...
Langley, Richard J. +2 more
core +1 more source
IEEE Access, 2021 Two designs of conical-beam array antennas are presented for different fifth-generation applications. They are based on slotted cylindrical waveguides and a travelling-wave topology, where the waveguide is used to progressively excite a cross-slot array.
Pablo Sanchez-Olivares +2 more
doaj +1 more source
BROADBAND ANTENNAS AND ANTENNA ARRAYS WITH REACTIVE LOADS [PDF]
Telecommunications and Radio Engineering, 2018 Subject and Purpose. The results of studies of actual methods for expanding the frequency range of vibrational curved whip and loop antennas, and antenna arrays based on them are presented. Optimal designs of broadband antennas with the concentrated reactive loads included in the shoulders are considered. Methods and methodology.
V. V. Ovsyanikov, E. R. Beznosova
openaire +1 more source
Spatial channel characterization for smart antenna solutions in FDD wireless networks [PDF]
, 2004 This paper introduces a novel metric for determining the spatial decorrelation between the up- and down-link wireless bearers in frequency division duplex (FDD) networks.
M. Beach +10 more
core +1 more source
Algerian Journal of Signals and Systems, 2020 MIMO systems constitute a backbone of the fourth and fifth generations of wireless communication systems. The purpose of this paper is to introduce the involvement of conformal antenna arrays into MIMO systems.
Abdelmadjid RECIOUI
doaj +1 more source
Comparison of Microwave Hyperthermia Applicator Designs with Fora Dipole and Connected Array
Sensors, 2023 In microwave hyperthermia tumor therapy, electromagnetic waves focus energy on the tumor to elevate the temperature above its normal levels with minimal injury to the surrounding healthy tissue.
Gulsah Yildiz +7 more
doaj +1 more source
Molecular Oncology, EarlyView.Pair‐wise comparison of the CellSearch and FETCH enrichment technologies for circulating tumor cells (CTCs) from metastatic breast, prostate, and small cell lung cancer patients shows an increased capture of CTCs using FETCH enrichment. The clinical implementation of circulating tumor cells (CTCs) as a predictive tool for therapy efficacy in the ...
Michiel Stevens +6 more
wiley +1 more source