Accession Number : ADD007352

Title :   Method for Determining Antenna Near-Fields from Measurements on a Spherical Surface.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Tricoles,Gus P ; Rope,L

Report Date : 06 May 1980

Pagination or Media Count : 10

Abstract : A method for determining antenna near-fields from measurements on a spherical surface. Phase and intensity values are measured by scanning a probe antenna over a spherical surface. The method applies both to planar or conformal antennas. The spherical surface may be in the Fresnel or Fraunhofer regions. The field at the antenna is computed utilizing the complex conjugate of the measured field. As a result, the source antenna at the point at which the antenna radiating field is evaluated is inside the measurement surface. Far-field patterns can be computed from the near-fields reconstructed from the spherical hologram surface. (Author)

Descriptors :   *Patents, *Antenna radiation patterns, Near field, Phase measurement, Field intensity

Subject Categories : Test Facilities, Equipment and Methods
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE