Results 151 to 160 of about 17,188 (287)

Sensitivity‐Tunable Complex Permittivity Sensing Enabled by Bound States in the Continuum in a Waveguide‐Resonator System

Laser &Photonics Reviews, EarlyView.
This work introduces two types of bound states in the continuum (BICs) and their merging in a waveguide‐resonator system, which significantly enhances the quality factor (Q$Q$). Benefiting from the high‐Q$Q$ characteristics of quasi‐BICs, a sensitivity‐tunable complex permittivity sensor is developed based on this system, achieving improvements of 93 ...
Yuhang Yang, Yinbing An, Yu Chen, Yihao Yang, Zi‐lan Deng, Yulan Huang, Shangli Tang, Tao Fu   +7 more
wiley   +1 more source

MODELLING OF RECONFIGURABLE TERAHERTZ INTEGRATED ARCHITECTURE (RETINA) SIW STRUCTURES [PDF]

, 2010
Lucyszyn, S, Zhou, Y
core   +1 more source

Non‐Uniform Programmable Photonic Waveguide Meshes

Laser &Photonics Reviews, EarlyView.
Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley   +1 more source

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, EarlyView.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

Accurate modeling of antennas using variable-fidelity EM simulations and co-kriging [PDF]

, 2012
Couckuyt, Ivo, Dhaene, Tom, Koziel, Slawomir, Ogurtsov, Stanislav   +3 more
core   +1 more source

A Novel 3D Probe for Near-Field Scanning Microwave Microscopy. [PDF]

Sensors (Basel)
Almuhlafi AM, Ramahi OM.
europepmc   +1 more source

MULTI LAYER STACKED RECTANGULAR DIELECTRIC RESONATOR ANTENNA

International Journal of Technical Research & Science, 2020
Richa Gupta, Mahender Singh, Arti Vaish, Ankit Gaur   +3 more
openaire   +1 more source

Dipole‐Quadrupole Model and Multipole Analysis of Resonant Membrane Metasurfaces

Laser &Photonics Reviews, EarlyView.
Membrane metasurfaces, arrays of holes in a dielectric membrane, are appealing because they require no substrate and allow access to resonant near‐fields. However, developing a comprehensive theoretical description for them remains challenging. We introduce a semi‐analytical dipole‐quadrupole approach to analyze their resonant spectra at arbitrary ...
Izzatjon Allayarov, Andrey B. Evlyukhin, Antonio Calà Lesina   +2 more
wiley   +1 more source

Wideband circularly polarized dielectric resonator antenna with high gain for microwave wireless power transfer. [PDF]

Sci Rep
Abdalmalak KA, Abdelmoneim LH, Alsirhani KF, Alanazi MD, Nasrat L, Abdel-Nasser M.   +5 more
europepmc   +1 more source

Vibration Attenuation of Cantilever Beam Using Electromagnetic Delayed Feedback

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study presents a combined analytical and numerical investigation of a single‐input single‐output delayed feedback controller designed to suppress vibrations in a cantilever beam actuated by an electromagnet positioned beneath its free end. An analytical model was developed using the linearized equation of motion for a transversely excited
Mohammad Alabdullah, Khaled Alhazza
wiley   +1 more source