Off-Grid Perfect BCs for the FDTD Method

Abstract

This paper presents a method for implementing off-grid boundary conditions (BCs) within Yee's Finite-Difference Time-Domain (FDTD) method, without disturbing the existing uniform mesh or changing the standard FDTD code. Both perfect electric conductor (PEC) and perfect magnetic conductor (PMC) walls are considered. The field values at off-grid virtual boundaries are obtained by extrapolation of adjacent field values. The method greatly enhances the flexibility of the FDTD method with respect to its ability to represent complex geometrical domains without reducing the spatial step.

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Document Details

Document Type
Technical Report
Publication Date
Apr 23, 2004
Accession Number
ADA438231

Entities

People

  • Natalia K. Nikolova
  • Yotka S. Rickard

Organizations

  • McMaster University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Boundaries
  • Electric Conductors
  • Electric Fields
  • Errors
  • Finite Difference Time Domain
  • Frequency
  • Information Operations
  • Magnetic Fields
  • Resonant Frequency
  • Resonators
  • Sine Waves
  • Standards
  • Stationary
  • Symmetry
  • Time Domain

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Maritime Combat Support and Expeditionary Logistics.
  • Solar Photovoltaics and Thermoelectric Devices.