Are you using the right tools in computational electromagnetics?

Abstract

Have you ever wondered why we use certain computational electromagnetics methods and how we decide on the choice of tools for modeling problems in electromagnetics? Though true for any field, particularly in electrodynamics, there is a gap between current practitioners' knowledge and knowhow about different tools and the state‐of‐the‐art developments. Rapid advancements made in material science and (nano)‐fabrication techniques are demanding new tools with multiscale and multiphysics capabilities. In this article, we cover the recent developments and highlight capabilities and limitations of different electromagnetic modeling tools. One has to answer a series of questions about modeling constraints and objectives before picking the appropriate tool. We aim to clarify some of the misconceptions, discuss limits and capabilities of some of the popular electromagnetic modeling tools, and provide a few practical tips, so that applied physicists and engineers can make informed decisions while choosing appropriate tools for their applications.

Rectangular Microstrip Antennas – A Tutorial

“…A new variation of FDTD, namely Finite Volume Time Domain (FVTD) method provides the best of FEM and FDTD, because deals with an unstructured mesh and it is possible to use an explicit time-stepping scheme [20].…”

“…New class of FEM called the Discontinuous Galerkin Method (DGM), which impose the continuity constraints on the computed flux components [20].…”

“…As computers became more efficient in handling complex numbers, analytical tools began to be less useful for antenna design and simulation [20].…”

Introductory Chapter: Modern Applications of Electrostatics and Dielectrics

“…*Address all correspondence to: krish@sankaran.org These advanced applications of electrostatics and dielectrics rely on accurate modelling methods and tools. The choice of right electromagnetic tools for modelling is an important challenge for design and application engineers [15,16]. Various advanced modelling tools are being developed for modelling such applications that includes some of the classical computational methods [17,18], and non-mainstream computational methods [19,20].…”

ANC System Modeling and Simulations in a Wide-Area Virtual Environment Using FDTD Approach with Perfectly Matched Layer Absorbing Boundaries

“…Some researchers attempted to create a quiet zone in specific area like closed room using sparse decomposition of reference signals from distributed sensors arranged in term of circular arrays to reduce broadband noise fields [18][19][20]. Some researchers applied electromagnetic wave equations to explore the ANC propagation filed, for example, Szarvas and Sujbert [21] presented the efficiency testing of the ANC calculation by acoustic field modeling, Sankaran reviewed many computational tools on how to make a good choice for modelling electromagnetics wave propagation problem [22], Orlis, Giouvanakis and Papanikolaou presented the simulation of the ANC in a small and enclosed workplace and modeling using the Finite Difference Time Domain (FDTD) method [23]. It should be noted here that although many ANC research have been done and already published but almost all of the done research would mainly focus on purely acoustic domain performance using either the numerical or analytical methodologies and neglecting some important factors or parameters involving in the actual environment.…”