Radar Cross Section (RCS) Technique For Antennas Characterisation

Abstract

In this paper, we present a non-contact radar technique for antennas characterisation. Both monostatic and bistatic radar configurations are used. By analysing the physical phenomena of the antenna backscatter with available terminal impedances, the re-radiation mode (transmission-mode) can be extracted. The calibration process eliminates contributions of both the antenna structure mode and measurement environment. In normal incidence, the transmission-mode data leads to the calculation of the antenna gain in the frequency domain. In bistatic mode, it is possible to reconstruct the far field radiation pattern of the antenna. The consistency of the results is based on the comparison of the reconstructed gain and radiation patterns based on the radar and conventional techniques obtained jointly by CST Microwave Studio numerical simulations and measurements.