A Study on the Method of Rapid Calibration of Passive Phased Array Antenna of Broadband-strong-feeding

In this paper, a fast frequency interpolation method is proposed through theoretical analysis of the phase frequency charcteristics of strong-fed broadband phased array antenna channel. Under the premise of meeting the requirements of the calibration accuracy, the entire frequency band can be obtained by minimizing the test sample data. The data solves the shortcomings of the long point-by-point calibration method of broadband phased array antennas, and can greatly improve the calibration efficiency of strong-fed broadband passive phased array antennas. At the same time, this method is also suitable for channel phase-frequency characteristics with flat or approximately linear, so it has higher application value.