Results 11 to 20 of about 1,855 (196)

Circuit-Theoretic Modeling and Simulation Study of Near-Field MIMO Arrays of Dipole Antennas

open access: yesActive and Passive Electronic Components
Near-field mutual coupling among closely spaced antennas limits the deployment of wireless MIMO interconnects in chip-to-chip communication. This paper presents a circuit-theoretic modeling and simulation study of near-field MIMO (NFMIMO) systems using 1 
Abhishek Javali   +2 more
doaj   +2 more sources

Obstacle-Immune Microwave Wireless Power Transfer System Based on Amplitude-Dependent Caustic Metasurface. [PDF]

open access: yesAdv Sci (Weinh)
This paper innovatively proposes an advanced microwave wireless power transfer (MWPT) system based on the amplitude‐dependent caustic metasurface generating the circular Airy beam. The proposed MWPT system will advance the research and development of circular Airy beams in the radio frequency domain.
Zhang S   +7 more
europepmc   +2 more sources

Calibration and Stokes Imaging with Full Embedded Element Primary Beam Model for the Murchison Widefield Array [PDF]

open access: yes, 2017
15 pages, 11 figures. Accepted for publication in PASA. © Astronomical Society of Australia 2017The Murchison Widefield Array (MWA), located in Western Australia, is one of the low-frequency precursors of the international Square Kilometre Array (SKA ...
Bell, M. E.   +24 more
core   +4 more sources

Structural Antennas for 3cm Radar Onboard Multi-Rotor UAV [PDF]

open access: yes, 2017
A series of 3cm amateur band radar antennas suitable for installation on a cinematic grade multi-rotor UAV were considered. A wideband open waveguide mouth antenna was developed that can be made from the existing arms of a multi-rotor UAV without any ...
Gray, D., Le Kernec, J.
core   +1 more source

Structural Design and Electrical Characteristics Analysis of Mid-Load Whip Antenna

open access: yesInternational Journal of Antennas and Propagation, 2022
In order to facilitate the integration of the offshore surface antenna and reduce the manufacturing cost, the resonance shortening length and omnidirectional radiation performance of a centrally loaded whip antenna are analyzed.
Menglei Xiu, Lihua Li, Shimin Feng
doaj   +1 more source

5G Digital Twin: A Study of Enabling Technologies

open access: yesApplied Sciences, 2022
5G networks require dynamic network monitoring and advanced security solutions. This work performs the essential steps to implement a basic 5G digital twin (DT) in a warehouse scenario.
Ramiro Ramirez   +2 more
doaj   +1 more source

Simulated design strategies for SPECT collimators to reduce the eddy currents induced by MRI gradient fields [PDF]

open access: yes, 2015
Combining single photon emission computed tomography (SPECT) with magnetic resonance imaging (MRI) requires the insertion of highly conductive SPECT collimators inside the MRI scanner, resulting in an induced eddy current disturbing the combined system ...
Joseph, Wout   +6 more
core   +2 more sources

Simulation-based configurations study of active millimetre-wave imaging system for personal security

open access: yesThe Journal of Engineering, 2019
Active millimetre-wave (mm-wave) imaging techniques and systems have been widely investigated and developed, due to their ability to detect personal carried concealed weapons and other contraband, at airports and other secure locations.
Yan You, LingBo Qiao, ZiRan Zhao
doaj   +1 more source

An investigation into the Gustafsson limit for small planar antennas using optimisation [PDF]

open access: yes, 2013
The fundamental limit for small antennas provides a guide to the effectiveness of designs. Gustafsson et al, Yaghjian et al, and Mohammadpour-Aghdam et al independently deduced a variation of the Chu-Harrington limit for planar antennas in different ...
Lewis, Andrew   +2 more
core   +2 more sources

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