An algorithm for the diagnosis of phase faults in array antennas from amplitude only far-field or near-field data is presented. The technique allows to diagnose the faults affecting only the phase of the excitation coefficient, whose amplitudes are then assumed equal to the nominal values. Discretised phase values, typical of digital phase shifters, are considered. The proposed approach is based on the optimization of a suitable objective functional via an Hybrid Evolutionary Algorithm. The main results of an extensive numerical analysis are presented in order to show the performances of the method.
A method for the diagnosis of phase faults in array antennas from amplitude-only field data / Bucci, OVIDIO MARIO; Capozzoli, Amedeo; D'Elia, Giuseppe. - ELETTRONICO. - 4:(2000), pp. 2238-2241. (Intervento presentato al convegno IEEE Int. Symp. on Antennas Prop. tenutosi a Salt Lake City, UT nel 16 Jul 2000-21 Jul 2000) [10.1109/APS.2000.874939].
A method for the diagnosis of phase faults in array antennas from amplitude-only field data
BUCCI, OVIDIO MARIO;CAPOZZOLI, AMEDEO;D'ELIA, GIUSEPPE
2000
Abstract
An algorithm for the diagnosis of phase faults in array antennas from amplitude only far-field or near-field data is presented. The technique allows to diagnose the faults affecting only the phase of the excitation coefficient, whose amplitudes are then assumed equal to the nominal values. Discretised phase values, typical of digital phase shifters, are considered. The proposed approach is based on the optimization of a suitable objective functional via an Hybrid Evolutionary Algorithm. The main results of an extensive numerical analysis are presented in order to show the performances of the method.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
