## Abstract

A simple and accurate integral equation solution is presented for computing far-field antenna patterns from near-field measurements. The equivalence principle is used to replace the aperture of the antenna by equivalent electric or magnetic currents. An E-field integral equation (EFIE) is developed to relate these equivalent currents to the near-field data. Method of moments (MoM) is utilized to transform the integral equation into a matrix one and a conjugate gradient (CG) procedure is applied to solve it numerically. Accurate far-fields over large elevation and azimuthal ranges are calculated from simple measurements based on planar and spherical scanning.

Original language | English (US) |
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Pages (from-to) | 218-221 |

Number of pages | 4 |

Journal | IEE Conference Publication |

Issue number | 350 |

State | Published - 1991 |

Event | International Conference on Computation in Electromagnetics - London, Engl Duration: Nov 25 1991 → Nov 27 1991 |

## ASJC Scopus subject areas

- Electrical and Electronic Engineering