Self-Calibration for Fault or Obstacle Correction in Continually Rotating Array Antennas

Abstract

Abstract-A novel self-calibration scheme for rotating array antennas is proposed. It is based on the acquisition of some near field samples using a static probe providing information about the actual behavior of the antenna. If any error, fault or obstacle modifies the desired behavior, the weights applied to the feedings of the array elements are modified so that specifications are fulfilled again. Additionally, coupling between the elements of the arrays is also accounted for. Different disciplines such as near field to far field transformation, antenna modeling, adaptive filtering or automatic learning are involved in this system. Some significant results are also presented.

Comparison of Different Methods for the Experimental Antenna Phase Center Determination Using a Planar Acquisition System

“…The severe requirements usually imply the use of higher and higher working frequencies, such as microwave or even millimeter band [10,11]. One important issue related to the radiating terminals is its proper and accurate characterization [12] and one usual problem is the accurate determination of the radiation pattern and the phase center of the antenna. This article is focused in this last topic.…”