Title :
Phase optimization for near field focus on simultaneous targets using antenna arrays
Author :
Álvarez, Jana ; Ayestarán, Rafael G. ; León, Germán ; López-Fernández, Jesús A. ; Las-Heras, Fernando
Author_Institution :
Dept. of Electr. Eng., Univ. of Oviedo, Gijon, Spain
Abstract :
A new method for antenna array multifocusing on one or more target points is described. Optimization based on the Levenberg-Marquardt algorithm is used to synthesize the phase of the feeding weights to be applied at each element of the array. The aim is achieving a radiated pattern where the maximum values are located at the multiple focal points, simultaneously. In order to show the efficiency of the method, tests are carried out on a 16 × 16 planar array and then an example using an 8 × 8 patch array is designed, simulated and implemented focusing on two different targets.
Keywords :
antenna feeds; antenna radiation patterns; microstrip antenna arrays; optimisation; planar antenna arrays; Levenberg-Marquardt algorithm; antenna array multifocusing; feeding weights; focal points; near-field focus; patch array; phase optimization; planar array; radiation pattern; Cost function; Focusing; Jacobian matrices; Phased arrays; Planar arrays;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6205987
