US 11,890,676 B2
Waveguide fence support
James Benedict, Andover, MA (US); Raquel M. Doyen, Marlborough, MA (US); Brian J. Duffy, Marlborough, MA (US); Judith E. Gill, Dallas, TX (US); Erica Klek, Wilmington, MA (US); and Jacob Steinberg, Dallas, TX (US)
Assigned to Raytheon Missiles & Defense (RMD), Tucson, AZ (US)
Filed by Raytheon Company, Waltham, MA (US)
Filed on Feb. 15, 2021, as Appl. No. 17/176,115.
Prior Publication US 2022/0258244 A1, Aug. 18, 2022
Int. Cl. B22F 10/47 (2021.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); B33Y 40/20 (2020.01); B22F 10/28 (2021.01); G01R 1/02 (2006.01); G01R 29/08 (2006.01); H01P 11/00 (2006.01)
CPC B22F 10/47 (2021.01) [B22F 10/28 (2021.01); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 80/00 (2014.12); G01R 1/02 (2013.01); G01R 29/0878 (2013.01); B22F 2301/052 (2013.01); H01P 11/002 (2013.01); Y10T 29/49002 (2015.01)] 16 Claims
OG exemplary drawing
 
1. A method of making a waveguide for a radar system comprising:
forming an additive manufacturing build of a waveguide by forming an initial layer, followed by forming a succession of build layers on the initial layer in a build direction from the initial layer towards a final layer, wherein forming the succession of build layers includes forming an overhanging feature supported by a support formed in the succession of build layers,
wherein the additive manufacturing build is a radar waveguide, and wherein the overhanging feature is a fence across an electromagnetic (EM) wave passage that extends in the build direction, wherein forming the support includes building the support up in successive layers from an initial support layer to a final support layer that contacts a first layer of the fence, followed by removing the support from the fence in the EM wave passage.