Results 11 to 20 of about 30,411 (268)

Partially Implicit FDTD (PI-FDTD) Method for Lower Dispersion and Anisotropic Errors

open access: yesIEEE Access, 2022
A new partially implicit 3D FDTD (PI-FDTD) method is introduced. The method is not unconditionally stable, but its stability limit is 6 times higher than that of the classic Yee’s FDTD method.
Mehmet Kusaf, Abdullah Yucel Oztoprak
doaj   +3 more sources

Practical method for the determination of time step in non-orthogonal FDTD [PDF]

open access: yes, 2001
The Non-Orthogonal FDTD algorithm is well-suited to the modelling of curved structures, however users of the technique frequently have difficulty determining an appropriate time step for the algorithm.
Nilavalan, R, Railton, CJ, Craddock, IJ
core   +7 more sources

Wideband printed bowtie antenna element development for post reception synthetic focusing surface penetrating radar [PDF]

open access: yes, 1999
A printed bowtie antenna for a Post Reception Synthetic Focussing Surface Penetrating Radar (PRSF-SPR) has been developed with the aid of FDTD analysis.
Nilavalan, R, Benjamin, R, Hilton, GS
core   +7 more sources

The influence of boundary-conditions on resonant frquencies of cavities in 3-D FDTD algorithm using nonorthogonal coordinates. [PDF]

open access: yes, 1994
The 3-dimensional finite-difference time-domain method in non-orthogonal co-ordinates (non-standard FDTD) is used to calculate the frequencies of resonators. The numerical boundary conditions of the method are presented.
Tong, Lin S.   +2 more
core   +4 more sources

Ultra-Broadband High-Efficiency Solar Absorber Based on Double-Size Cross-Shaped Refractory Metals

open access: yesNanomaterials, 2020
In this paper, a theoretical simulation based on a finite-difference time-domain method (FDTD) shows that the solar absorber can reach ultra-broadband and high-efficiency by refractory metals titanium (Ti) and titanium nitride (TiN).
Hailiang Li   +5 more
doaj   +1 more source

Peculiarities of focusing circularly and radially polarized super-Gaussian beams using ring gratings with varying relief height

open access: yesКомпьютерная оптика, 2022
The focusing features of a super-Gaussian beam, as well as Laguerre-super-Gaussian (1,0) modes with radial and circular polarizations on ring gratings (direct and inverse) with a variable height of individual relief rings were investigated in this paper.
D.A. Savelyev
doaj   +1 more source

Analyzing electromagnetic structures with curved boundaries on Cartesian FDTD meshes [PDF]

open access: yes, 1998
In this paper, a new finite-difference time-domain (FDTD) algorithm is investigated to analyze electromagnetic structures with curved boundaries using a Cartesian coordinate system. The new algorithm is based on a nonorthogonal FDTD method. However, only
Railton, CJ, Hao, Y
core   +1 more source

AI-Enhanced GWO-FDTD Co-Design of Multi-Band Plasmonic Nanorings for Multiplexed Biosensing [PDF]

open access: yesJournal of Optoelectronical Nanostructures
In this paper, we explore the notable advancements in optical biosensors that have emerged over the past decade. This analysis includes innovative fabrication techniques and the growing areas of application.
Mohsen Nasrolahi   +3 more
doaj   +1 more source

Unified GSTC-FDTD Algorithm for the Efficient Electromagnetic Analysis of 2D Dispersive Materials [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic wave analysis of complex media. Conventional FDTD analyses of very thin two-dimensional (2D) dispersive materials require overwhelming computing resources ...
Sangeun Jang   +3 more
doaj   +1 more source

An analytical and numerical analysis of several locally conformal FDTD schemes [PDF]

open access: yes, 1999
The virtues of the finite-difference time-domain (FDTD) method for the electromagnetic analysis of arbitrary complex metal and dielectric structures are well known.
Schneider, JB, Railton, CJ
core   +1 more source

Home - About - Disclaimer - Privacy