A radio frequency (“RF”) waveguide device fabricated by additive manufacturing is provided that includes a RF channel comprising a wall and a RF component comprising an unsupported span extending from the wall of the RF channel. The unsupported span can include at least one unsupported surface extending from the wall at an oblique angle relative to the wall. The RF component formed in this manner with additive manufacturing does not negatively impact the RF performance of the RF waveguide.

A radio frequency (“RF”) waveguide device fabricated by additive manufacturing is provided that includes a RF channel comprising a wall and a RF component comprising an unsupported span extending from the wall of the RF channel. The unsupported span can include at least one unsupported surface extending from the wall at an oblique angle relative to the wall. The RF component formed in this manner with additive manufacturing does not negatively impact the RF performance of the RF waveguide.

A multi-layer waveguide device, a multi-layer waveguide arrangement, and a method for production thereof, wherein the multi-layer waveguide comprises at least three horizontally divided layers assembled into a multi-layer waveguide. The layers are at least a top layer, an intermediate layer, and a bottom layer, wherein each layer has through going holes extending through the entire layer. The holes are arranged with an offset to adjacent holes of adjoining layers creating a leak suppressing structure.

A stacked, multi-layer transmission line is provided. The stacked transmission line includes at least a pair of conductive traces, each conductive trace having a plurality of conductive stubs electrically coupled thereto. The stubs are disposed in one or more separate spatial layers from the conductive traces.

A stacked, multi-layer transmission line is provided. The stacked transmission line includes at least a pair of conductive traces, each conductive trace having a plurality of conductive stubs electrically coupled thereto. The stubs are disposed in one or more separate spatial layers from the conductive traces.

A stacked, multi-layer transmission line is provided. The stacked transmission line includes at least a pair of conductive traces, each conductive trace having a plurality of conductive stubs electrically coupled thereto. The stubs are disposed in one or more separate spatial layers from the conductive traces.

A free-from radio frequency (RF) media includes a substrate having a first dielectric layer formed thereon and a second dielectric layer on an upper surface of the first dielectric layer. A first conductive layer is formed on an upper surface of the first dielectric layer and has a first overall profile. A second conductive layer having a second overall profile is formed on an upper surface of the second dielectric layer such that the second dielectric layer is interposed between the first and second conductive layers. The first overall profile of the first conductive layer is different from the second overall profile of the second conductive layer.

The present invention provides a feed circuit capable of enhancing a mechanical strength and electrical characteristics thereof. A waveguide is provided on a plate-like member, and has a plurality of branches. A bridging part-extends in a Y direction intersecting an X direction in which the waveguide-guides an electromagnetic wave between sidewalls of the waveguide (14), and includes a plurality of members provided at predetermined intervals in the X direction so that intensity of a reflected wave becomes a predetermined intensity or less.

The present invention provides a feed circuit capable of enhancing a mechanical strength and electrical characteristics thereof. A waveguide is provided on a plate-like member, and has a plurality of branches. A bridging part-extends in a Y direction intersecting an X direction in which the waveguide-guides an electromagnetic wave between sidewalls of the waveguide (14), and includes a plurality of members provided at predetermined intervals in the X direction so that intensity of a reflected wave becomes a predetermined intensity or less.

A free-from radio frequency (RF) media includes a substrate having a first dielectric layer formed thereon and a second dielectric layer on an upper surface of the first dielectric layer. A first conductive layer is formed on an upper surface of the first dielectric layer and has a first overall profile. A second conductive layer having a second overall profile is formed on an upper surface of the second dielectric layer such that the second dielectric layer is interposed between the first and second conductive layers. The first overall profile of the first conductive layer is different from the second overall profile of the second conductive layer.