PERFORMANCE IMPROVEMENT IN AMPLITUDE SYNTHESIS OF UNEQUALLY SPACED ARRAY USING LEAST MEAN SQUARE METHOD

S. Kazemi, Hamid Reza Hassani, Gholamreza R. Dadashzadeh, Fatemeh Geran Gharakhili
2008 Progress in Electromagnetics Research B  
In this paper, an efficient method to obtain the elements current distribution for a non uniformly spaced array is presented. For a given far field pattern, after sampling the array factor the proposed method uses the least mean square error technique to solve the system of equations rather than solving the previously published Legendre function method. It's shown that the average side lob level obtained by this proposed method is some 5 dB lower in comparison with the existing Legendre
more » ... ng Legendre function method of solution. If the Legendre function method published in the literature is to be used to solve for the current distribution, in the final part of this paper, a criteria on how to choose suitable vectors that would result in a 3 dB lower side lobe level performance will be provided.
doi:10.2528/pierb07103002 fatcat:gritr5yjvjepdbdtoesm45topm