US 12,261,366 B1
Horn antennas with integrated feed networks
Timothy Patrick Wink, Castle Rock, CO (US); Cory W. Craddock, Denver, CO (US); and Jason Stewart Wrigley, Littleton, CO (US)
Assigned to LOCKHEED MARTIN CORPORATION, Bethesda, MD (US)
Filed by Lockheed Martin Corporation, Bethesda, MD (US)
Filed on Jan. 12, 2022, as Appl. No. 17/573,712.
Int. Cl. H01Q 21/06 (2006.01); H01P 1/161 (2006.01); H01Q 13/02 (2006.01); H01Q 21/00 (2006.01)
CPC H01Q 21/064 (2013.01) [H01P 1/161 (2013.01); H01Q 13/0283 (2013.01); H01Q 21/0087 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a horn antenna array formed in a single workpiece of material comprising horn antenna elements with integrated feed networks;
each of the integrated feed networks comprising:
a waveguide interface flange having a port;
a filter element having a serpentine cavity coupled to the port that is at least partially formed by a base section, wherein a separation interface is established between the base section and an attachable cap that forms a remainder of the serpentine cavity; and
a polarizer element having a waveguide cavity that couples between the serpentine cavity of the filter element and an associated horn antenna element that forms a signal aperture.