Abstract: An antenna arrangement having a stacked layered structure. The antenna arrangement including a radiation layer having a surface. The surface is delimited by a surface boundary. A first and a second slot extend along a first slot axis and second slot axis, respectively, and are arranged on the surface. The antenna arrangement also includes a distribution layer facing the radiation layer. The distribution layer is arranged to distribute a radio frequency signal to the first and second slots. The distribution layer includes a distribution layer feed and a ridge arranged to form a first ridge waveguide intermediate the distribution layer and the radiation layer. The ridge includes a first section connected to a second section via a curved section. The first section extends along a first ridge axis and the second section extends along a second ridge axis different from the first ridge axis.

Abstract: A multi-layer waveguide including at least three physical layers assembled into a multi-layer waveguide. The layers are a top layer, one or more intermediate layer, and a bottom layer. The multi-layer waveguide further includes a waveguide channel being an elongated aperture in at least one intermediate layer. At least one layer has a metasurface on a first surface facing a first adjoining layer, wherein the metasurface surrounds the elongated aperture and comprise thick and thin sections.

Abstract: A multi-layer signal filter includes at least three physical layers. Each layer has through going apertures arranged with an offset to apertures of at least one adjoining layer, each layer further has a filter channel opening for receiving signals to be filtered. The apertures are arranged along a perimeter outside the filter channel opening and the apertures are arranged with a central surface portion increasing the edge length of the aperture.

Abstract: 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.

Abstract: 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.

Abstract: A transition arrangement including a first transmission line being a planar transmission line including a coupling section and being disposed on a dielectric substrate layer. The substrate layer has a periodic or quasi-periodic structure arranged in the substrate layer such as to be disposed along at least part of the first transmission line and to partly surround the coupling section. The transition arrangement includes a conducting layer on which the substrate layer is arranged and which is adapted to act as a ground plane, and the periodic or quasi-periodic structure is so arranged and at such a distance from the first transmission line and/or the coupling section that EM energy, RF power, can be coupled contactlessly between the first transmission line and the periodic or quasi-periodic structure, the transition between the first transmission line and the periodic or quasi-periodic structure being planar and contactless without any galvanic contact.

Abstract: A microwave device, such as a waveguide, transmission line, waveguide circuit, transmission line circuit or radio frequency part of an antenna system, is disclosed. The microwave device comprises two conducting layers arranged with a gap there between, and a set of periodically or quasi-periodically arranged protruding elements fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths, thus forming a so-called gap waveguide. All protruding elements are connected electrically to each other at their bases at least via the conductive layer on which they are fixedly connected, and some or all of the protruding elements are in conductive or non-conductive contact also with the other conducting layer. A corresponding manufacturing method is also disclosed.

Abstract: A microwave device, such as a waveguide, transmission line, waveguide circuit, transmission line circuit or radio frequency part of an antenna system, is disclosed. The microwave device comprises two conducting layers arranged with a gap there between, and a set of periodically or quasi-periodically arranged protruding elements fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths, thus forming a so-called gap waveguide. All protruding elements are connected electrically to each other at their bases at least via the conductive layer on which they are fixedly connected, and some or all of the protruding elements are in conductive or non-conductive contact also with the other conducting layer. A corresponding manufacturing method is also disclosed.