Evaluating near-field radiation patterns of commercial antennas

Fernando Las-Heras, Marcos Rodríguez Pino, Susana Loredo, Yuri Alvarez, Tapan K. Sarkar

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


A source reconstruction technique from the measured near fields is proposed to obtain a set of equivalent currents that will characterize the forward and backward radiation patterns of an antenna. Once the equivalent sources are determined, the electromagnetic field at any aspect angle and distance from the antenna can be calculated. In this paper, the method is applied to the evaluation of the radiation from commercial antennas at any observation point. The electric field patterns of a DCS base station antenna at 1800 MHz and a horn antenna at 2500 MHz have been calculated and plotted at several distances from the antenna. This method can be used in characterizing the "reference volumes" or exclusion zones for transmitting antennas dealing with the maximum levels of electromagnetic radiation safe for human exposure, as stated in many national and international regulations.

Original languageEnglish (US)
Pages (from-to)2198-2207
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Issue number8
StatePublished - Aug 2006


  • Atenna measurement
  • Equivalent magnetic currents
  • Human exposure
  • Near-field pattern
  • Near-field to far-field transformation
  • Non-ionizing EM fields

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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