153 citations · 282 across the 9 of their papers we have counts for
9 papers
An Overview of Machine Learning Techniques for Radiowave Propagation Modeling
Aristeidis Seretis, Costas D. Sarris
We give an overview of recent developments in the modeling of radiowave propagation, based on machine learning algorithms. We identify the input and output specification and the ar…
An Expedient Approach to FDTD-based Modeling of Finite Periodic Structures
Aaron J. Kogon, Costas D. Sarris
This paper proposes an efficient FDTD technique for determining electromagnetic fields interacting with a finite-sized 2D and 3D periodic structures. The technique combines periodi…
FDTD Modeling of Periodic Structures: A Review
Aaron J. Kogon, Costas D. Sarris
This paper reviews the state of the art of periodic boundary conditions (PBCs) in Finite-Difference Time-Domain (FDTD) simulations. The mathematical principles and 3D FDTD implemen…
FDTD-Based Diffuse Scattering and Transmission Models for Ray-Tracing of Millimeter-Wave Communication Systems
Stefanos Bakirtzis, Takahiro Hashimoto, Costas D. Sarris
At millimeter-wave frequencies, diffuse scattering from rough surfaces is an important propagation mechanism. Including this mechanism in radio propagation modeling tools,such as r…
Efficient Computation of High-Order Electromagnetic Field Derivatives for Multiple Design Parameters in FDTD
Kae-An Liu, Costas D. Sarris
This paper introduces a new computational framework to derive electromagnetic field derivatives with respect to multiple design parameters up to any order with the Finite-Differenc…
Computation of High-Order Electromagnetic Field Derivatives with FDTD and the Complex-Step Derivative Approximation
Kae-An Liu, Hans-Dieter Lang, Costas D. Sarris
This paper introduces a new approach for the computation of electromagnetic field derivatives, up to any order, with respect to the material and geometric parameters of a given geo…
Optimization of Wireless Power Transfer Systems Enhanced by Passive Elements and Metasurfaces
Hans-Dieter Lang, Costas D. Sarris
This paper presents a rigorous optimization technique for wireless power transfer (WPT) systems enhanced by passive elements, ranging from simple reflectors and intermedi- ate rela…
Semidefinite Relaxation-Based Optimization of Multiple-Input Wireless Power Transfer Systems
Hans-Dieter Lang, Costas D. Sarris
An optimization procedure for multi-transmitter (MISO) wireless power transfer (WPT) systems based on tight semidefinite relaxation (SDR) is presented. This method ensures physical…
Structure-Preserving Reduction of Finite-Difference Time-Domain Equations with Controllable Stability Beyond the CFL Limit
Xihao Li, Costas D. Sarris, Piero Triverio
The timestep of the Finite-Difference Time-Domain method (FDTD) is constrained by the stability limit known as the Courant-Friedrichs-Lewy (CFL) condition. This limit can make FDTD…