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Efficient footprint patterns obtained by spreading out collapsed distributions
Author(s) -
Ares F.,
Rodriguez J. A.,
Vieiro A.,
Moreno E.
Publication year - 1997
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19970205)14:2<108::aid-mop10>3.0.co;2-7
Subject(s) - ripple , beamwidth , footprint , planar , side lobe , microwave , simulated annealing , planar array , boundary (topology) , minification , optics , physics , topology (electrical circuits) , electronic engineering , acoustics , algorithm , computer science , engineering , mathematics , antenna (radio) , mathematical analysis , mathematical optimization , electrical engineering , telecommunications , geology , paleontology , computer graphics (images) , voltage
An antenna pattern synthesis technique is presented that permits the design of planar arrays with footprint patterns of a specific boundary and controlled ripple and side‐lobe levels. The method involves two steps. The first consists of working with collapsed distributions in a sequence of crystal planes and determining how to spread these out into a planar distribution with a boundary that is inversely proportional to the flat‐top beamwidth. After that, a minimization of a cost function that makes use of the simulated annealing technique is performed in order to obtain the element excitations. This cost function is built as the squared difference between the desired and obtained SLL and ripple levels at different angular positions. The dynamic ratio of the excitations of the array was also taken into account in the cost function. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 14, 108–111, 1997