linear vector product of the transformed signals and a stored beam forming function and finally processes the complex linear vector product through an inverse fnt network to generate a set of simultaneous multiple antenna beams the advantages of utilizing the fnt include reduced hardware requirements greater processing speed due to a reduction in multiplications required to be performed and sharper output beams due to the absence in the fnt of round off errors application_number US 91813278 A description a preferred embodiment of the present invention will now be described in connection with a circular equispaced array of antenna elements although it is understood that the present inventive technique and apparatus may be equally applicable to other array configurations and computation situations for example the array elements may be placed in non circular e g ellipitical patterns as long as they are equally angularly spaced about a point referring now to fig1 an array of n antenna elements 10 are located on a circle 11 which has its center at 12 the elements 10 are equally angularly separated by an angle u03b8 the output signal from a given element is denoted by a k u03b8 where u03b8 is the angular spacing between adjacent elements and k ranges from 0 to n 1 thus for the elements shown a 0 is the output of the.