Accuracy of the method of moments for scattering by a cylinder

Karl F. Warnick, Weng Cho Chew

Research output: Contribution to journalArticlepeer-review


We study the accuracy and convergence of the method of moments for numerical scattering computations for an important benchmark geometry: the infinite circular cylinder. From the spectral decomposition of the electric-field integral equation for this scatterer, we determine the condition number of the moment matrix and the dependence of solution error on the choice of basis functions, discretization density, polarization of the incident field, and the numerical quadrature rule used to evaluate moment-matrix elements. The analysis is carried out for both the TM polarization (weakly singular kernel) and TE polarization (hypersingular kernel). These results provide insights into empirical observations of the convergence behavior of numerical methods in computational electromagnetics.

Original languageEnglish (US)
Pages (from-to)1652-1660
Number of pages9
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number10
StatePublished - Oct 2000
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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