Surface impedance boundary conditions (SIBCs) have been successfully used for over 70 years in both analytical and numerical computation. Currently, its importance in computer-aided design of electromagnetic devices has become prominent. High frequency SIBCs have been particularly successful because of the minimal penetration of electromagnetic fields in conductors and lossy dielectrics. SIBCs based on the skin depth have also been used albeit these have been limited to first order (Leontovich) condition. A general method of derivation of SIBCs of arbitrary order is presented and shown to apply to low frequency power structures. The SIBCs are universally applicable and the order of the SIBC allows control of errors in design. Whereas low order SIBCs apply to classical flat surfaces and perpendicular diffusion, higher order conditions take into account curvatures and lateral diffusion of fields as well. Results shown include transmission line parameters, eddy current testing and other power applications in which they contribute to speed and accuracy of the design.

Computer-aided design in electromagnetics – The case for surface impedance boundary conditions

DI RIENZO, LUCA;
2012-01-01

Abstract

Surface impedance boundary conditions (SIBCs) have been successfully used for over 70 years in both analytical and numerical computation. Currently, its importance in computer-aided design of electromagnetic devices has become prominent. High frequency SIBCs have been particularly successful because of the minimal penetration of electromagnetic fields in conductors and lossy dielectrics. SIBCs based on the skin depth have also been used albeit these have been limited to first order (Leontovich) condition. A general method of derivation of SIBCs of arbitrary order is presented and shown to apply to low frequency power structures. The SIBCs are universally applicable and the order of the SIBC allows control of errors in design. Whereas low order SIBCs apply to classical flat surfaces and perpendicular diffusion, higher order conditions take into account curvatures and lateral diffusion of fields as well. Results shown include transmission line parameters, eddy current testing and other power applications in which they contribute to speed and accuracy of the design.
File in questo prodotto:
File Dimensione Formato  
aece_2012_3_1.pdf

Accesso riservato

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 1.2 MB
Formato Adobe PDF
1.2 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/680999
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 4
social impact