Phased Array Calibration Based on Measured Complex Signals in a Compact Multiprobe Setup

Abstract

Phased array calibration is typically carried out in plane-wave conditions, which requires expensive far-field setups. This letter presents a novel phased array calibration method based on measured complex array signal, which works in the cost-effective compact testing setup. The basic principle is to employ multi-probe antennas in a short measurement distance such that we can effectively retrieve the array element patterns in the boresight direction based on the recorded complex signals at the multiple probes using the interpolation technique. Both theoretical derivations and measurement validations are provided to demonstrate the effectiveness of the proposed method.

Removing the Froissart Doublets in a Rational Interpolation Based on Loewner Matrix

“…Interpolation is widely employed in the analyses of electromagnetic problems [1][2][3][4][5][6][7]. Of all the interpolation methods, many deal with rational interpolation, such as vector fitting [8], Padé approximant [9,10], minimal rational interpolation [11], adaptive rational interpolation based on Loewner matrix (ARILM) [12], etc.…”