Patent ID: 11881607
Assignee: LOCKHEED MARTIN CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. An antenna array, comprising:
a plurality of horn antennas each having a horn element coupled to a septum orthomode transducer polarizer at a common port;
each septum orthomode transducer polarizer comprising:
a waveguide cavity with two signal ports at a first longitudinal end and the common port at a second longitudinal end;
a septum element disposed longitudinally for a septum length in the waveguide cavity starting from the first longitudinal end between the two signal ports and comprising a series of step downs established over the septum length; and
ridge elements positioned on side walls of the waveguide cavity, each extending longitudinally for the septum length and comprising a first thickness proximate to the first longitudinal end smoothly tapering to a second thickness a selected longitudinal distance away from the first longitudinal end terminating in a step discontinuity to a corresponding side wall that establishes placement in the waveguide cavity as generally congruent with the septum element.