Verification of Complex Excitation Coefficients from Measured Space Array Antenna by the Equivalent Current Technique

In this paper the inverse-source technique or source reconstruction technique has been applied as a diagnostic tool to determine the complex excitation at sub array and single element level of a measured array antenna. The inverse-source technique, implemented in the commercially available tool “INSIGHT”, allows to compute equivalent electric and magnetic currents providing exclusive diagnostic information about the measured antenna. By additional processing of the equivalent currents the user can gain insight to the realized excitation law at single element and sub-array level to identify possible errors.