Patent ID: 7724197

Claim:
A beam forming lens having: a first plurality of beam port waveguides having a waveguide height Wh 1 sufficient to support TE10 modes; a second plurality of array port waveguides having a waveguide height sufficient to support TE10 modes; a plurality of dummy ports; a parallel plate lens region having a height Wh 2 sufficient to support at least TE10 and TE20 modes; said first plurality of beam port waveguides coupled to said parallel plate lens region with a plurality of beam port apertures, whereby each said beam port waveguide is coupled to a beam port divider, said beam port divider comprising a first divider with a first port coupled to said beam port waveguide and a pair of second ports formed from said first port with a resistive septum, each said first divider second ports coupled to a second divider having a first port coupled to one of said first divider second ports, each said second divider second ports coupled to one of said beam port apertures of said parallel plate lens region; said second plurality of array port waveguides coupled to said parallel plate lens region with a plurality of array port apertures opposite from said first plurality of beam port apertures, said array port waveguides each coupled to a transformer including a waveguide height increase and a divider including a resistive septum forming two ports coupled with apertures to said parallel plate lens region; said beam port apertures and said array port apertures separated on each end by said plurality of dummy ports.