An analysis of range distance requirements for large antenna measurements by the use of the transient characteristics

Abstract

The goal of the paper is to analyze the association of the diflerent range time domain (TO) responses and the amplitude and phase antenna patterns (AP) for point probe and for probe with the same aperture size as the size of anienna under test. When deriving the T D field dependence is suggested to have radiated a 6-pulse by every points of aperture. The M e t h o d of Transient Field Calculation For the aperture antenna (mirror or the antenna array), we present the pulse radiating characteristic (PRC) of aperture E,(t,Fj a t the point with the coordinate defined by the radiusvector Fin the following form : E

Transient field calculation of aperture antennas

“…This conclusion allows one to reduce distances to surrounding objects to a few wavelengths in the case of near-field time-domain measurements and to reconstruct antenna patterns without the influence of surrounding objects [19]. The use of the PRC method makes a correction to the range distance requirements for large antenna measurements [20] as indicated in [21].…”

Range Distance Requirements for Large Antenna Measurements for Linear Aperture With Uniform Field Distribution

“…Another physical explanation of the effect of sidelobe reduction when the big probe was used is given in [17,18]. Cases when the test antenna is a circular plane aperture and the probe antenna is a circular plane aperture or a small (negligible size) antenna were considered for uniform field distribution.…”