Abstract:

Based on the orthogonal method for the antenna pattern synthesis of linear arrays, some constraint conditions are proposed to implement a constrained orthogonal synthesis. The proposed method simplifies the calculation due to the orthogonalization in unconstrained orthogonal approach, and it helps to realize the pattern synthesis of uniform or nonuniform linear arrays. Experimental results show that the proposed constrained orthogonal approach can fulfill the pattern synthesis of linear arrays with such constrains as beam steering in a given direction, null steering and sidelobe level suppression, and that it is of similar performance to that of the iterative computationbased adaptive synthesis method but with simple analytical calculation.

Key words: antenna, pattern synthesis, constrained orthogonal method, nonuniform linear array