Fixed Probe Based Digital Phased Array Calibration Using Virtual Probe Location

Abstract

An inclination towards low cost phased array antenna technology has been observed in recent years while signal digitization also become closer to the antenna elements. This ongoing trend sets the necessity of calibrating phased arrays into utmost importance. In this work, a quasi-near-field fixed probe based calibration scheme has been introduced, which is capable of calibrating a phased array faster than any traditional method. This paper proposed the theory, mathematical framework, and simulated results for phased array antenna calibration using a fixed probe and virtual probe location estimation.