Integral equation solution for near-filled to far-field transformation

Peter Petre, T. K. Sarkar, Saila Ponnapalli, Bela Szekeres

Research output: Contribution to journalConference Articlepeer-review


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 languageEnglish (US)
Pages (from-to)218-221
Number of pages4
JournalIEE Conference Publication
Issue number350
StatePublished - 1991
EventInternational Conference on Computation in Electromagnetics - London, Engl
Duration: Nov 25 1991Nov 27 1991

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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