A CG‐FFHT method for the scattering solution of axisymmetric inhomogeneous media

Qing‐Huo ‐H Liu, Weng Cho Chew

Research output: Contribution to journalArticle


We propose a new technique to solve the integral equation for wave scattering by an axisymmetric inhomogeneity using the conjugate gradient (CG) method together with the fast Fourier‐Hankel transforms (FFHT). The method uses fast Hankel transform (FHT) and fast Fourier transform (FFT) requiring only O(N log N) floatingpoint operations per iteration and O(N) storage. © 1993 John Wiley & sons, Inc.

Original languageEnglish (US)
Pages (from-to)101-104
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number2
StatePublished - Feb 1993



  • Conjugate gradient
  • fast Fourier transform
  • fast Hankel transform
  • inhomogeneous medium
  • wave scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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