A Cubesat uses both rail rods, walls, or both as an antenna. Either the rail rods and/or walls may form a rectangular waveguide, and may have one or more slots that allow energy to leak and radiate in a predefined direction in space.

An adapter structure for transferring an electromagnetic signal between an electronic component and an antenna, the adapter structure includes an adapter body having a base surface. The adapter structure further includes at least one ridged adapter waveguide channel, wherein the at least one adapter waveguide channel extends from the base surface into the adapter body. The adapter structure further includes an electromagnetic band gap structure with a plurality of band gap elements, wherein the band gap elements are spaced apart relative to each other, project from the base surface and have a front face spaced apart from the base surface. At least one band gap element is arranged as extension of a ridge of an associated adapter waveguide channel.

The radar system includes a split-block assembly comprising a first portion and a second portion. The first portion and the second portion form a seam, where the first portion has a top side opposite the seam and the second portion has a bottom side opposite the seam. The system includes at least one port located on a bottom side of the second portion. Additionally, the system includes radiating elements located on the top side of the first portion, wherein the radiating elements are arranged in a plurality of arrays. Yet further, the system includes a set of waveguides in the split-block assembly configured to couple each array to at least one port. Furthermore, the split-block assembly is made from a polymer and where at least the set of waveguides, the at least one port, and the plurality of radiating elements include metal on a surface of the polymer.

A hollow conductor has a first flange, a second flange, a flexible hollow conductor section, and a first fastening unit. The flexible hollow conductor section is electrically connected both to the first flange and to the second flange in such a way that a radio-frequency signal (RF signal) can be transmitted from the first flange to the second flange or vice versa via the flexible hollow conductor section. The flexible hollow conductor section has a surface, and a first depression is arranged in the surface. The first fastening unit is connected to the first flange. The first fastening unit rests against the surface of the flexible hollow conductor section in a first overlap region in a longitudinal direction of the flexible hollow conductor section and engages in the first depression of the flexible hollow conductor section and thereby fixes the flexible hollow conductor section with respect to the first flange.

The present invention relates to a transition arrangement (1) between a SIW and a waveguide interface (3). The SIW comprises a dielectric material (4), a first and second metal layer (5, 6) and a first and second electric wall element (7a, 7b) running essentially parallel and electrically connecting the metal layers (5, 6). The transition arrangement (1) comprises a coupling aperture (8) in the first metal layer (5) and a third wall element (7c) running between the first and second electric wall elements (7a, 7b). The transition arrangement (1) further comprises an intermediate transition element (9) with a first and second main surface (10, 11), and a transition aperture (12) having first and second opening (13, 14) with corresponding first and second widths (w.sub.1, w.sub.2). The transition element (9) is mounted over the coupling aperture (8), the first width (w.sub.1) exceeding the second width (w.sub.2) and the transition from the first width (w.sub.1) to the second width (w.sub.2) taking place between the first opening (13) and the second opening (14) in at least one step (15, 16). The second opening (14) is mounted to the waveguide interface (3) having an interface opening (17) being offset relative the second opening (14), a front step (18) being formed.

A waveguide transition includes a ridge waveguide section with a first ridge part running along a first wall having a first distance to an opposing second wall. The waveguide transition comprises a partial H-plane waveguide section with an electrically conducting foil that comprises a longitudinally running foil slot ending a certain edge distance before a foil edge that faces the ridge waveguide section. The ridge waveguide section and the partial H-plane waveguide section overlap during a transition section that has a first end at a transition between the second wall and a third wall. There is a second distance between the first wall and the third wall that exceeds the first distance. The transition section has a second end where the first ridge part ends by a transversely running second ridge part that crosses the foil slot and connects to a third wall.

Apparatus for radiating and/or receiving microwaves and comprising one radiator group with u building blocks with u being an even number, wherein said radiator group has a sandwich-layout comprising a structured layer with q integrated cavities on one side face, with q being an even number, and a structured metal layer covering at least part of said one side face, said u building blocks are structurally identical, said metal layer is structured so that each of said u building blocks comprises a suspended patch-shaped element, which is cavity-backed by one of said q integrated cavities, the shape and size of said patch-shaped elements is defined by boundary slots of said metal layer, said at least one radiator group has a common, central feed point as interface for a hollow waveguide, and wherein said apparatus comprises a hollow waveguide or a waveguide flange being connected to said central feed point.

A wireless transmission system comprising a main circuit board having a first controller and a first connector assembly associated therewith; a removable and replaceable radio frequency module for transmitting and receiving wireless data, wherein the radio frequency module includes a second controller, a first module connector assembly, and a second connector assembly that is configured to couple to the first connector assembly; a removable and replaceable diplexer module for sending and receiving the wireless data at different frequencies, wherein the diplexer module includes a storage element, a first waveguide port connector, and a second module connector assembly that is configured to couple to the first module connector assembly; and a transition waveguide module having a second waveguide port connector that is configured to couple to the first waveguide port connector.

Disclosed are various embodiments for eliminating or minimizing atmospheric discharge within the internal phasing coil of the guided surface waveguide probe. A guided surface waveguide probe comprises a charge terminal elevated over a lossy conducting medium. The shape of the charge terminal is designed to minimize atmospheric discharge. A top portion of a coil being configured to provide a voltage to the charge terminal with a phase delay that matches a wave tilt angle associated with a complex Brewster angle of incidence associated with the lossy conducting medium is recessed within a hollow region of the charge terminal.

Disclosed is a support structure for a guided surface waveguide probe. In some embodiments, the support structure includes vertically oriented corner columns that define outer corners of the structure, vertically oriented intermediate columns that define portions of outer sides of the structure, each intermediate column being positioned between a pair of corner columns, framing members that extend between the corner columns and the intermediate columns, plates located at junctions between the framing members and the columns, and fasteners located at the junctions that secure the framing members and the plates to the corner columns and the intermediate columns, and that secure the framing members to the plates, wherein the corner columns, intermediate columns, framing members, plates, and fasteners are all made of a non-conductive material.