UHF Phased Array Antenna Measurements

摘要

Accurate UHF phased array antenna patterns are difficult to achieve due to high level multipath present in the far field measurement test range. Special range geometry's and source arrangements have been devised over the years to mitigate the measurement errors produced by test range multipath. In this paper we will describe new measurement results achieved using Aperture Synthesis illumination method designed to optimize and control the influence of ground reflections and in turn reduce quiet-zone amplitude ripple. Measured phased array patterns at 418, 434, 449, and 464 MHz will be shown for a 64-element array.