### Abstract

The adaptive integral method (AIM) is applied to the solution of the combined field integral equation (CFIE) of scattering by a three-dimensional (3-D) perfect electric conductor (PEC). The employment of CFIE eliminates the interior resonance problem suffered by both the electric field integral equation (EFIE) and the magnetic field integral equation (MFIE). Furthermore, it significantly improves the efficiency of AIM by reducing the number of iterations for convergence. It is shown that the memory requirement and computational complexity per iteration of the AIM solution of CFIE are O(N^{1.5}) and O(N^{1.5}log N), respectively, for 3-D PEC surface scattering problems.

Original language | English (US) |
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Pages (from-to) | 321-328 |

Number of pages | 8 |

Journal | Microwave and Optical Technology Letters |

Volume | 19 |

Issue number | 5 |

DOIs | |

State | Published - Jan 1 1998 |

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### Keywords

- Electromagnetic scattering
- Electromagnetics
- Integral equation

### ASJC Scopus subject areas

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

### Cite this

*Microwave and Optical Technology Letters*,

*19*(5), 321-328. https://doi.org/10.1002/(SICI)1098-2760(19981205)19:5<321::AID-MOP3>3.0.CO;2-G