Planar N-way metamaterial power divider

A zero-phase-shift metamaterial lens with a concave circular face and a flat face can transform cylindrical waves into plane waves. If a sectoral shaped transmission line is connected to the concave circular lens face, and N ports are equally placed along the flat lens face, equal in-phase power division to these N ports occurs when the input port is connected the apex of the sectoral transmission line. Spatial and frequency response calculations of a 10-way power divider whose sector flare angle is 90 degrees, and spacing between the output ports is 0.26 wavelength, and operating at 1 GHz, demonstrate the feasibility of the divider.