Title :
Near-field parameter variations and their effect upon reconstruction of antenna aperture excitations
Author :
Wey, C.-s. ; Xu, A. ; Mostafavi, M.
Author_Institution :
Antenna Specialist Co., San Carlos, CA, USA
Abstract :
A computer simulation is performed to evaluate the effect of various near-field parameters, such as the measurement distance and the sampling space, on the reconstruction of aperture distributions and the diagnostics of faulty elements in array antennas. The near field of an N*N dipole array containing one or more defective elements is simulated on a planar surface a distance d from the antenna for a given sample spacing of Delta S. Next, Gaussian noise is added to the near field and the result is back propagated to reconstruct the source. The measurement distance, the sample spacing, and the noise level are variables in this simulation study.<>
Keywords :
antenna arrays; antenna radiation patterns; digital simulation; electrical engineering computing; random noise; Gaussian noise; antenna aperture excitations; aperture distribution reconstruction; array antennas; back propagation; computer simulation; dipole array; faulty elements diagnosis; measurement distance; near-field parameters; noise level; sample spacing; Antenna arrays; Antenna measurements; Antennas and propagation; Aperture antennas; Computer simulation; Dipole antennas; Gaussian noise; Performance evaluation; Sampling methods; Surface reconstruction;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175124
