Device with waveguide structures

A device comprising:

• a first metal layer;
• at least one dielectric layer, wherein the first metal layer is disposed over the at least one dielectric layer;
• a second metal layer, wherein the at least one dielectric layer is disposed over the second metal layer;
• and
• a plurality of waveguide structures defining a first plurality of openings, each of the plurality of waveguide structures extending from the first metal layer to the second metal layer and through the at least one dielectric layer, wherein the first metal layer includes a second plurality of openings, and each opening of the second plurality of openings laterally surrounds at least one of the plurality of waveguide structures.

A radio frequency (RF) device comprising:

• a printed circuit board substrate comprising:
• a first metal layer;
• at least one dielectric layer, wherein the first metal layer is disposed over the at least one dielectric layer;
• a second metal layer, wherein the at least one dielectric layer is disposed over the second metal layer;
• and
• a plurality of waveguide structures, each comprising a portion of the first metal layer and conductive side walls that extend through the at least one dielectric layer from the first metal layer to the second metal layer, the sidewalls defining a first plurality of openings that extend through the first metal layer, the dielectric layer, and the second metal layer;
• and
• an antenna structure disposed on and in contact with the first metal layer of the printed circuit board substrate, wherein the first metal layer includes a second plurality of openings that laterally surround the plurality of waveguide structures.