Abstract: An array antenna (100) having a layered configuration. The array antenna comprises a radiation layer (110) comprising a plurality of radiation elements (111) and a distribution layer (120) facing the radiation layer. The distribution layer is arranged to distribute a radio frequency, RF, signal to the plurality of radiation elements. The distribution layer comprises at least one distribution layer feed (121) and at least one first waveguide (122) arranged to guide the RF signal between at least one distribution layer feed and at least one radiation element. The array antenna further comprises at least a second waveguide (130) connected to at least one distribution layer feed (121). Any of the first (122) and the second (130) waveguides comprises plastics with a first type of surface treatment (313), where the first type of surface treatment comprising metallization.

Abstract: An antenna element (100) for an array antenna. The antenna element having a layered configuration comprising a first ground plane (151), a first dielectric layer (140) facing the first ground plane (151), a first planar radiation element (131) facing the first dielectric layer (140), and a feeding via hole (132) arranged electrically connected to the first planar radiation element (131) and arranged extending through the first dielectric layer (140) and through the first ground plane (151) without electrical contact. The antenna element further comprises at least one complementary set comprising a complementary dielectric layer (120) and a complementary planar radiation element (111) facing the complementary dielectric layer. The set is arranged stackable facing the first planar radiation element (131) such that a complementary dielectric layer is arranged between two radiation elements (111, 131) in the layered configuration.

Abstract: An antenna arrangement suitable for a vehicle radar transceiver. The antenna arrangement includes a radiating layer having a surface, the surface delimited by a surface boundary. One or more apertures are arranged on the surface. The antenna arrangement further includes one or more surface current suppressing members arranged on the surface. The one or more surface current suppressing members are arranged to suppress a surface current from an aperture to the surface boundary. The one or more surface current suppressing members include one or more grooves.

Abstract: An antenna arrangement (100) comprising a radiation layer (110) comprising a first slot (111) and a second slot (112) extending along a first slot axis (D3) and second slot axis (D4), respectively, where the first and the second slots are arranged in a column (115) extending along a column axis (D5), and where the slot axes are arranged at respective non-zero third and fourth angles (a3, a4) with respect to the column axis; and a distribution layer (120) facing the radiation layer (110), comprising a first ridge waveguide comprising a first ridge (121) and a second ridge waveguide comprising a second ridge (122), wherein waveguiding paths (201, 202) of the first and second waveguides are configured to match respective shapes of the first and second ridges.

Abstract: The present disclosure relates to an antenna arrangement (10) comprising a PCB (1) a plurality of solder balls (16) soldered on the first major surface (la) of the PCB (1), the PCB (1) further comprising a conductive layer (12a) connecting the solder balls (16) at their bases. The antenna arrangement further comprises an antenna module (2) comprising a second major surface (2b) which is electrically conductive and at least one waveguide opening (23) and at least one antenna aperture (22), wherein the antenna module (2) is arranged with the second major surface (2b) facing the PCB (1). The solder balls (16) are arranged to form an EBG structure together with the conductive second major surface (2b) of the antenna module (2) and the conductive layer of the first major surface (la) of the PCB (1), and the antenna arrangement (10) further comprises a transmitting and/or receiving component (3).

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 waveguide comprising 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 comprises 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 transition arrangement (100) comprising a first conductive layer (110), a second conductive layer (120), and a third conductive layer (130) in a stacked layer configuration. The first conducive layer (110) comprises a first ridge (111) arranged along a first waveguiding path, and a first metamaterial structure (113) arranged along a perimeter of the first waveguide path. The second conducive layer (120) comprises a second ridge (121) arranged along a second waveguiding path, and a second metamaterial structure (123) arranged along a perimeter of the second waveguide path. The third conductive layer (130) is arranged in between the first and the second conductive layers (110, 120). The third conductive layer comprises respective planar surfaces facing the first and the second first metamaterial structures (113,123), respectively.

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: An arrangement (100) for interconnection of waveguide structures (10,20) or components comprising a number of waveguide flange adapter elements (100) having a surface of a conductive material with a periodic or quasi-periodic structure (15) formed by a number of protruding elements (115) arranged or designed to allow waves to pass across a gap between a surface around a waveguide opening (3) to another waveguide opening in a desired direction or waveguide paths, at least in an intended frequency band of operation, and to stop propagation of waves in the gap in other directions.

Abstract: A micro strip to waveguide transition comprising a waveguide module and a section of printed circuit board (PCB). The waveguide module comprises a waveguide aperture and a repetitive structure, the waveguide aperture being arranged extending through the module for attaching a waveguide to an external side of the module, the repetitive structure comprising a plurality of protruding elements arranged to surround the waveguide aperture on an internal side of the module and to define a passage into the waveguide aperture on the internal side, wherein the repetitive structure is configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure while allowing propagation via the passage, the transition further comprising a PCB with a patch antenna connected to a transmission line and arranged to face the passage into the waveguide aperture.

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: An antenna arrangement (100) having a layered configuration comprising a slot layer (130) comprising one or more slot layer apertures (131), and a distribution layer (120) facing the slot layer. The distribution layer is arranged to distribute two radio frequency, RF, signals to the one or more slot layer apertures (131). The distribution layer comprises a distribution layer feed (121) and at least one first waveguide (122) arranged to guide the RF signals between the distribution layer feed and the one or more slot layer apertures (131). The first waveguide (122) is a dual mode ridge waveguide comprising two parallel ridges (123) arranged on the distribution layer (120) and along the first waveguide, where the two ridges are arranged in proximity to each other to support two modes.

Abstract: An antenna arrangement having a stacked layered structure. The antenna arrangement includes a radiation layer including one or more radiation elements, and a distribution layer facing the radiation layer. The distribution layer is arranged to distribute a radio frequency signal to the one or more radiation elements. The distribution layer includes at least one distribution layer feed. Any of the distribution layer and the radiation layer includes a first electromagnetic bandgap, EBG, structure arranged to form at least one first waveguide intermediate the distribution layer and the radiation layer. The first EBG structure is arranged to prevent electromagnetic radiation in a frequency band of operation from propagating from the first waveguide in directions other than through the distribution layer feed and the one or more radiation elements. The radiation layer and the distribution layer are attached to each other with one or more fastening members including respective deformable tails.

Abstract: An antenna arrangement having a stacked layered structure. The antenna arrangement includes a radiation layer including one or more radiation elements, and a distribution layer facing the radiation layer. The distribution layer is arranged to distribute a radio frequency signal to the one or more radiation elements. The distribution layer includes at least one distribution layer feed and a first electromagnetic bandgap, EBG, structure arranged to form at least one first waveguide intermediate the distribution layer and the radiation layer. The first EBG structure is also arranged to prevent electromagnetic propagation in a frequency band of operation from propagating from the at least one first waveguide in directions other than through the at least one distribution layer feed and the one or more radiation elements. The distribution layer includes a plurality of distribution modules and a positioning structure, the positioning structure is arranged to fix the distribution modules in position.

Abstract: A microstrip to waveguide transition comprising a waveguide module and a section of printed circuit board (PCB). The waveguide module comprises a waveguide aperture and a repetitive structure, the waveguide aperture being arranged extending through the module for attaching a waveguide to an external side of the module, the repetitive structure comprising a plurality of protruding elements arranged to surround the waveguide aperture on an internal side of the module and to define a passage into the waveguide aperture on the internal side, wherein the repetitive structure is configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure while allowing propagation via the passage, the transition further comprising a PCB with a patch antenna connected to a transmission line and arranged to face the passage into the waveguide aperture.

Abstract: An antenna array with a layered structure having a base layer with a metamaterial structure, a printed circuit board (PCB) layers, a feed layer arranged on the opposite side of the PCB from the RF IC(s), and a radiating layer arranged on the feed layer. The radiating layer having a plurality of radiating elements. The metamaterial structure is arranged to attenuate electromagnetic radiation propagating between the at least two adjacent waveguides in the frequency band.

Abstract: A high frequency filter comprising a waveguide and at least one resonant cavity is disclosed. The waveguide is a so-called gap waveguide, and comprises a metal or metallized base layer, a lid arranged in parallel with said metal or metallized baser layer, a waveguiding structure in the form of a ridge, a groove or a microstrip line, and an artificial magnetic conductor arranged on said base layer, between the baser layer and the lid, and arranged aligned with said waveguiding structure to prevent waveguide propagation along other directions than along said waveguide structure. The filter further comprises at least one resonant cavity arranged within said baser layer, and extending essentially perpendicular to a plane of said baser layer. The filter may e.g. be used in a phased array antenna.

Abstract: An antenna arrangement having a stacked layered structure. The antenna arrangement includes a radiation layer including one or more radiation elements, and a distribution layer facing the radiation layer. The distribution layer is arranged to distribute a radio frequency signal to the one or more radiation elements. The distribution layer includes at least one distribution layer feed and a first electromagnetic bandgap, EBG, structure arranged to form at least one first waveguide intermediate the distribution layer and the radiation layer. The first EBG structure is also arranged to prevent electromagnetic propagation in a frequency band of operation from propagating from the at least one first waveguide in directions other than through the at least one distribution layer feed and the one or more radiation elements. The distribution layer includes a plurality of distribution modules and a positioning structure, the positioning structure is arranged to fix the distribution modules in position.

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.