Results 31 to 40 of about 14,576 (298)
Superscattering and Directive Antennas via Mode Superposition in Subwavelength Core-Shell Meta-Atoms
Photonics, 2021 Designing a subwavelength structure with multiple degenerate resonances at the same frequency can vastly enhance its interaction with electromagnetic radiation, as well as define its directivity.
Alexander W. Powell +3 more
doaj +1 more source
Software tool for optimising indoor/outdoor coverage in a construction site [PDF]
, 1998 A system architecture, an empirical propagation model, and a software combined with a CAD tool, have been designed to offer mobile communication services to construction sites. Results have been validated by measurements.Peer ReviewedPostprint (published
Agustí Comes, Ramon +4 more
core +2 more sources
Results in EngineeringAn interferometric antenna system for Wi-Fi direction finding (DF) using only two directive tilted antennas, is proposed in this work. Typically, more than two receiver chains are needed to obtain high angular sensitivity, with a distance between ...
M. Hutar +4 more
doaj +1 more source
Drones, 2023 Interferometric synthetic aperture radar (InSAR) is an active remote sensing technique that typically utilises satellite data to quantify Earth surface and structural deformation.
Anthony Carpenter +3 more
doaj +1 more source
Ultra directive antenna via transformation optics
, 2009 Spatial coordinate transformation is used as a reliable tool to control electromagnetic fields. In this paper, we derive the permeability and permittivity tensors of a metamaterial able to transform an isotropically radiating source into a compact ...
Burokur, Shah Nawaz +2 more
core +1 more source
Effect of antenna element properties and array orientation on performance of MIMO systems [PDF]
, 2004 This document is made available in accordance with publisher policies. Please cite only the published version using the reference above.
Beach, MA +5 more
core +3 more sources
RFID coverage extension using microstrip-patch antenna array [PDF]
, 2009 In this paper, a UHF-band 2 x 2 microstrip phased-array antenna is designed and implemented to extend the coverage of an RFID reader system. The phased-array antenna has four microstrip-patch antennas, three Wilkinson power dividers, and a transmission ...
Abbak, Mehmet +2 more
core +1 more source
EURASIP Journal on Wireless Communications and Networking, 2007 This paper deals with a novel MAC layer protocol, namely, directive synchronous transmission asynchronous reception (D-STAR) able to space-time synchronize a wireless sensor network (WSN).
Gianfranco Manes +7 more
doaj +2 more sources
A ray tracing‐assisted device discovery approach for low terahertz communications
IET Microwaves, Antennas & Propagation, 2023 Future wireless communication systems at low terahertz frequencies (0.1–1 THz) suffer from high attenuation losses, and therefore, highly directive antennas are foreseen.
Tobias Doeker +2 more
doaj +1 more source
Textile Diamond Dipole and Artificial Magnetic Conductor Performance under Bending, Wetness and Specific Absorption Rate Measurements [PDF]
, 2015 Textile diamond dipole and Artificial Magnetic Conductor (AMC) have been proposed and tested under wearable and body centric measurements. The proposed antenna and AMC sheet are entirely made of textiles for both the substrate and conducting parts, thus ...
Abd Malek, M. F. +5 more
core +2 more sources