A Novel Combined Potential-Field Formulation for Densely Discretized Perfectly Conducting Objects

Eris O., Karaova G., Ergul O.

IEEE Transactions on Antennas and Propagation, 2022 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Publication Date: 2022
  • Doi Number: 10.1109/tap.2022.3145425
  • Title of Journal : IEEE Transactions on Antennas and Propagation
  • Keywords: Boundary conditions, Broadband communication, broadband solvers, dense-discretization problems, Electric potential, Integral equations, Magnetic domains, Magnetic resonance, potential integral equations, Standards, Surface integral equations


IEEEWe present a novel surface-integral-equation formulation that provides broadband solutions of electromagnetic problems involving perfectly conducting objects. The formulation, namely the combined potential-field formulation (CPFF), is based on a well-balanced combination of the conventional potential integral equations, the magnetic-field integral equation, and an additional potential integral equation involving magnetic vector potential. In addition to being stable for dense discretizations, CPFF is free of internal resonances, and it enables accurate and efficient solutions of large-scale closed conductors using conventional basis and testing functions. Numerical results demonstrate that CPFF clearly outperforms other formulations, including the popular combined-field integral equation, for densely discretized objects comparable to or larger than wavelength.