Results 41 to 50 of about 17,188 (287)
A Compact Sequentially Rotated Circularly Polarized Dielectric Resonator Antenna Array
Applied Sciences, 2021 In this study, a compact 2 × 2 circularly polarized (CP) sequentially rotated (SR) dielectric resonator antenna (DRA) array operating in the IEEE 802.11a band is presented.
Yazeed Qasaymeh +2 more
doaj +1 more source
Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna
Advanced Functional Materials, EarlyView.We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz +9 more
wiley +1 more source
A novel Multi-permittivity Cylindrical Dielectric Resonator Antenna for Wideband Applications [PDF]
, 2014 In this paper, a novel multi-permittivity cylindrical dielectric resonator antenna for wideband application is presented. The multi-permittivity cylinder is formed by combining two different permittivity material sectors in such a way that each sector ...
Abdullah, M. Z. +6 more
core +1 more source
Microwave whirlpools in a rectangular-waveguide cavity with a thin ferrite disk
, 2007 We study a three dimensional system of a rectangular-waveguide resonator with an inserted thin ferrite disk. The interplay of reflection and transmission at the disk interfaces together with material gyrotropy effect, gives rise to a rich variety of wave
A. Gurevich +5 more
core +1 more source
«QUADRUPOLE» MODE DR FILTER FOR C-BAND APPLICATIONS
Information and Telecommunication Sciences, 2013 The possibility of reducing the radiation loss of dielectric resonator (DR) to the external environment has been investigated for the first time by applying higher order mode of DR, namely “quadrupole” type, with higher Q factor.
Tetiana Pidgurska, Olexander Trubin
doaj +1 more source
A wideband frequency reconfigurable rectangular dielectric resonator antenna
2016 10th European Conference on Antennas and Propagation (EuCAP), 2016 A wideband frequency reconfigurable dielectric resonator antenna (DRA) is presented and discussed. The proposed antenna is capable of frequency switching at two different bands between 4.12 GHz and 8.85 GHz. The rectangular dielectric resonator with a permittivity of 15 is fed by U-shaped microstrip feed line.
Danesh, S +4 more
openaire +3 more sources
Sensorized Engineered Tissues with Built‐in Thermoregulation and Nutrient Supply
Advanced Functional Materials, EarlyView.This work introduces a granular hydrogel‐based tissue engineering platform that includes a closed‐loop temperature control to maintain 37°C and sustainably releases nutrients, thereby enabling cells to retain a high viability even if stored at room temperature for up to 24 h.
Antonia Georgopoulou +5 more
wiley +1 more source
A New Wideband Circularly Polarized Dielectric Resonator Antenna [PDF]
, 2014 A wideband and compact circularly polarized (CP) C-shaped dielectric resonator antenna (DRA) is presented. The proposed C-shaped DR is excited by a simple stripe line connected to a coplanar waveguide (CPW) feeding line.
Danesh, Sh. +4 more
core
Alexandria Engineering JournalDielectric resonator antennas (DRAs) use dielectric material as a resonator to accomplish high radiation efficiency and avoid severe conductor loss. The dielectric material that behaves as a resonator is plagued by a number of limitations, including ...
Mohamad Faiz Mohamed Omar +7 more
doaj +1 more source
A Wideband Circularly Polarized Pixelated Dielectric Resonator Antenna
Sensors, 2016 The design of a wideband circularly polarized pixelated dielectric resonator antenna using a real-coded genetic algorithm (GA) is presented for far-field wireless power transfer applications.
Son Trinh-Van +3 more
doaj +1 more source