Numerical design of dual-beam open-end waveguide antenna array for the angular diversity at millimeter waves

This paper presents the design of open-end waveguide antenna array for dual-beam radiations at millimeter waves to provide an angular diversity. The array is consisted of four elements with a beam forming network (BFN) designed to form two beams with two excitation ports. The antenna architecture and BFN design are presented with the radiation examined to demonstrate the characteristics.