Title :
Regularized matrix method for near-field diagnostic techniques of phased array antennas
Author :
Gattoufi, L. ; Picard, D. ; Rahmat Samii, Y. ; Bolomey, J.C.
Author_Institution :
Lab. des Signaux et Syst., CNRS, Gif-sur-Yvette, France
Abstract :
Near-field measurements can be used as diagnostic tools to reconstruct the aperture field distribution of planar array antennas and to locate their possible defective elements. A regularized matrix method for obtaining the individual element excitation of an array antenna from measured near-fields is presented. A computer simulation is performed to evaluate the effect of various near-field parameters such as the measurement distance and the sample spacing on the reconstruction of the excitation. The validity of the approach has been verified using both synthetic and actual measurements data. Good results have been obtained.
Keywords :
antenna phased arrays; antenna radiation patterns; antenna testing; inverse problems; matrix algebra; signal reconstruction; aperture field distribution reconstruction; computer simulation; defective elements; diagnostic tools; element excitation; excitation reconstruction; inverse problem; measured field processing; measurement distance; measurements data; near-field diagnostic techniques; near-field measurements; near-field parameters; phased array antennas; planar array antennas; regularized matrix method; sample spacing; synthetic data; Antenna arrays; Antenna measurements; Antennas and propagation; Aperture antennas; Inverse problems; Matrix decomposition; Performance evaluation; Phased arrays; Planar arrays; Transmission line matrix methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631741
