A Study of Phased Array Antenna Patterns Determined by Measurements on a Near-Field Range.

摘要

The validity of the near-field measurement technique is the determination of the far-field radiation patterns of large phased arrays is demonstrated. The significance of accurately characterizing the near-field probe at all angles of interest is demonstrated. A new method of processing the Fast Fourier Transform has been developed that allows increased pattern resolution and reduced core memory requirements. The measurement of absolute gain has been carried out by a new approach using a standard gain horn. The accuracy of this method is demonstrated. A computer-aoded simulation study of near-field errors has been conducted using an empirical base model for the illumination function determined from measurements in the near field.