A Broadband Array with Unbalanced Feeds : Elements and Power Combiners Based on the Fragmented Aperture Principle

A fully combined, fixed-beam, ultra-wideband array with unbalanced feeds is described. Both the array elements and power combiners are based on the fragmented aperture principle. Each was designed separately using a genetic algorithm, then combined to form an integrated version of the array. Measured results are reported including realized gain, and beamwidths in the principal planes.