Results 21 to 30 of about 10,067 (265)

Thinning of Sierpinski fractal array antennas using bounded binary fractal-tapering techniques for space and advanced wireless applications

open access: yesICT 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

Metamaterial‐based linear phased array antenna with improved wide‐angle scanning bandwidth by parasitic metal strips

open access: yesIET Microwaves, Antennas & Propagation, 2021
Two metamaterial‐based linear phased array antennas with improved wide‐angle scanning bandwidth are designed in this study. Metamaterial antenna element consists of a metamaterial patch, periodic metal strips, distributed metal strips and slot coupling ...
Qi Zhang   +5 more
doaj   +1 more source

Capacity Optimization of MIMO Systems Involving Conformal Antenna Arrays using a Search Group Algorithm

open access: yesAlgerian 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

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular 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

W‐band single‐layer circularly‐polarised antenna based on compact gap waveguide

open access: yesIET Microwaves, Antennas & Propagation
A single‐layered W band circularly polarised (CP) antenna array fed by a sequential feeding network using compact gap waveguides (GWs) with reduced pins is presented.
Zheng Liu   +3 more
doaj   +1 more source

Flow Enabled Target Capture Halbach‐based magnetic enrichment increases circulating tumor cell capture from blood in metastatic cancer patients

open access: yesMolecular 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

Antenna array architecture [PDF]

open access: yesProceedings of the IEEE, 1992
An abbreviated view of the topics included in modern array architecture is presented. The broad subject of architecture includes all the electromagnetic, thermal and mechanical aspects that need to be addressed by the array design team. The emphasis is on the interaction between the selection of an array aperture organization, corporate feeds, devices ...
openaire   +2 more sources

Orbital Angular Momentum for Wireless Communications: Key Performance Indicators and Performance Comparison

open access: yesIEEE Access
Orbital angular momentum (OAM) is an intrinsic property of electromagnetic (EM) waves that has opened new possibilities for enhancing the capacity of wireless communications. Consequently, it has garnered significant attention in recent years.
Zihao Wang   +2 more
doaj   +1 more source

Comparison of Microwave Hyperthermia Applicator Designs with Fora Dipole and Connected Array

open access: yesSensors, 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

Identification and characterisation of calcitonin receptor isoforms expressed in glioblastoma derived glioma stem and U‐87 MG cells

open access: yesFEBS Open Bio, EarlyView.
Glioblastoma cells express calcitonin receptor variants (CT receptor isoforms) that may help them survive stress. Using qPCR, transcript‐specific long‐read nanopore sequencing, immunofluorescence co‐localisation and comparative sequence analysis, this study identifies a novel alternatively spliced CALCR transcript that encodes the CTb receptor isoform ...
Pragya Gupta   +7 more
wiley   +1 more source

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