On the Geometry Synthesis of Uniformy Excited Conformal Arrays by the Orthogonal Method

Presentation of a geometry synthesis procedure accompanied by the Orthogonal Method employed for arrays on various non-planar surfaces is given in the work at hand. Prior to the enforcement of the design procedure the host´s response is analyzed so that radiation from the element radiators are characterised. Afterwards, radiation information is used in the design technique to synthesize an array with the desired response specifications. We start from an initial conformal array and we perturb the element positions by combining an iterative technique with the orthogonal method. The final position of the elements is found from the last iteration where the desired approximation of the pattern is obtained. It is noticed that our formulation does not give always a successful outcome, since the search can be trapped in a local minimum. Thus, the successful issue comes from a suitable selection of the initial array. Also, in many cases the procedure could be repeated for non-uniform excitations if the final result does not give the desired approximation. Several examples for conformal arrays on circular cylinders, on paraboloids and on elliptic cones for different cases will show the applicability of the orthogonal method.