US 12,068,518 B2
Waveguide filter comprising a waveguide cavity defined by plural sidewalls and formed by a metal additive manufacturing technique having a specified overhang angle
Michael Hollenbeck, West Jordan, UT (US); and Robert Smith, West Jordan, UT (US)
Assigned to Optisys, Inc., Salt Lake City, UT (US)
Filed by Optisys, Inc., West Jordan, UT (US)
Filed on Apr. 28, 2022, as Appl. No. 17/661,267.
Claims priority of provisional application 63/180,923, filed on Apr. 28, 2021.
Prior Publication US 2022/0352614 A1, Nov. 3, 2022
Int. Cl. H01P 1/211 (2006.01); H01P 1/207 (2006.01); H01P 1/219 (2006.01); H01P 3/12 (2006.01); H01P 3/123 (2006.01); H01P 5/18 (2006.01)
CPC H01P 1/211 (2013.01) [H01P 1/207 (2013.01); H01P 1/219 (2013.01); H01P 3/12 (2013.01); H01P 3/123 (2013.01); H01P 5/18 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a waveguide cavity for propagating an electromagnetic signal, wherein the waveguide cavity is defined by a plurality of sidewalls;
wherein the waveguide cavity comprises an irregular hexagonal cross-sectional geometry that has a complex side;
wherein the complex side comprises a first side and a second side connected to the first side; and
wherein the first side and the second side of the complex side meet at a radiused edge;
wherein the apparatus is fabricated as a single indivisible metal element using metal additive manufacturing techniques such that the apparatus is fabricated in a positive Z-axis direction relative to a build plate; and
wherein the apparatus is oriented relative to the build plate such that an overhang angle on any downward facing surface of the apparatus is greater than or equal to 25 degrees.