ANTENNA TESTING FROM PHASELESS MEASUREMENTS - PROBE COMPENSATION AND EXPERIMENTAL RESULTS IN THE CYLINDRICAL CASE

The experimental feasibility of testing a radiating source by a method requiring only amplitude data is shown in the cylindrical scanning te chnique. The proposed innovative approach is applied to a set of measu red near held data of a parabolic reflector antenna. The presence of a real probe antenna is also considered. No a priori assumption about t he missing phase information is required; the solution is found by sta rting from a completely random first guess. The applied technique, esp ecially at millimeter wavelengths, provides a powerful tool for dealin g with several applications, such as f.i. reflector or array testing a nd diagnostics. It has high precision and employs less expensive and s impler setups.