Abstract: The present invention relates to a metalized waveguide interface (1) for providing a galvanically isolated waveguide connection for a propagating signal, between a standardized waveguide (2) and a, to the standardized waveguide non-compatible, metalized chip-level waveguide (3). The metalized waveguide interface (1) is configured such that a first open-ended quarter wavelength waveguide (31) and a second open-ended quarter wavelength waveguide (32) is obtained along the directions d1 and d2, respectively, when the metalized chip-level waveguide (3) is mounted on the support surface (5). The interface is further configured such that third open-ended quarter wavelength waveguide (33) is obtained between the third surface portion (9) and the metalized chip-level waveguide (3) when the metalized chip-level waveguide (3) is mounted on the support surface (5).

Abstract: The present disclosure relates to a waveguide section (101) comprising at least one air-filled waveguide conducting tube (104; 104a, 104b, 104c, 104d) having a longitudinal extension (L1). Each waveguide conducting tube (104; 104a, 104b, 104c, 104d) has an electrically conducting inner wall (106) and comprises at least one set of at least two electrically conducting integrally formed protrusions (107; 107a, 107b, 107c, 107d). Each protrusion (107a, 107b, 107c, 107d) is electrically conducting and comprises a corresponding plate part (109; 109a, 109b, 109c, 109d) that is adapted to form a capacitance (C1, C2, C3, C4; C10; C11) with at least one other plate part in the same set of protrusions (107; 107a, 107b, 107c, 107d) for each set of protrusions (107; 107a, 107b, 107c, 107d), whereby an RF, radio frequency, signal passing via a corresponding waveguide conducting tube (104) is arranged to be electromagnetically filtered.

Abstract: The present disclosure relates to a sub array antenna (101a, 101b, 101c) adapted to be mounted to at least one other sub array antenna (101a, 101b, 101c) along at least one extension (E1, E2) to form an array antenna (100). The sub array antenna (101a, 101b, 101c) comprises an electrically conducting ground plane (102a, 102b, 102c) and at least one edge part (104a, 105a; 104b, 105b; 104c, 105c) that is adapted to face an edge part of an adjacent sub array antenna. The edge part (104a, 105a; 104b, 105b; 104c, 105c) at least partly comprises a locking structure comprising an outer lock part (103a, 103b) and an indent (106a, 106b) that is positioned between the outer lock part (103a, 103b) and the ground plane (102a, 102b, 102c) in a direction of the extension (E1, E2).

Abstract: A resonance cavity comprising a first layer of dielectric material having a first dielectric constant and a first thickness, a second layer of dielectric material having a second dielectric constant different from the first dielectric constant and a second thickness, a metal patch arranged between the first and the second layer of dielectric material, and an electromagnetically shielded enclosure having at least one aperture, the electromagnetically shielded enclosure arranged to enclose part of the first and second layers of dielectric material and the metal patch.

Abstract: The present invention relates to a metalized waveguide interface (1) for providing a galvanically isolated waveguide connection for a propagating signal, between a standardized waveguide (2) and a, to the standardized waveguide non-compatible, metalized chip-level waveguide (3). The metalized waveguide interface (1) is configured such that a first open-ended quarter wavelength waveguide (31) and a second open-ended quarter wavelength waveguide (32) is obtained along the directions d1 and d2, respectively, when the metalized chip-level waveguide (3) is mounted on the support surface (5). The interface is further configured such that third open-ended quarter wavelength waveguide (33) is obtained between the third surface portion (9) and the metalized chip-level waveguide (3) when the metalized chip-level waveguide (3) is mounted on the support surface (5).

Abstract: A filter arrangement having three or more stacked metallization layers separated by printed circuit board, PCB, layers. Each metallization layer includes an aperture. The filter arrangement has a plurality of via-holes extending though the stacked metallization layers and through the separating Dielectric material layers, whereby the via-holes and the metallization layers delimit a cavity in each Dielectric material layer. The cavities in two consecutive Dielectric material layers being coupled by the aperture in the single metallization layer separating the two consecutive Dielectric material layers. The aperture of a topmost metallization layer being arranged as antenna element. The filter arrangement having a signal interface arranged as a conduit connecting at least one dielectric material layer to an exterior of the filter arrangement.

Abstract: The present disclosure relates to a waveguide section (101) comprising at least one air-filled waveguide conducting tube (104; 104a, 104b, 104c, 104d) having a longitudinal extension (L1). Each waveguide conducting tube (104; 104a, 104b, 104c, 104d) has an electrically conducting inner wall (106) and comprises at least one set of at least two electrically conducting integrally formed protrusions (107; 107a, 107b, 107c, 107d). Each protrusion (107a, 107b, 107c, 107d) is electrically conducting and comprises a corresponding plate part (109; 109a, 109b, 109c, 109d) that is adapted to form a capacitance (C1, C2, C3, C4; C10; C11) with at least one other plate part in the same set of protrusions (107; 107a, 107b, 107c, 107d) for each set of protrusions (107; 107a, 107b, 107c, 107d), whereby an RF, radio frequency, signal passing via a corresponding waveguide conducting tube (104) is arranged to be electromagnetically filtered.

Abstract: The present invention relates to a metalized waveguide interface (1) for providing a galvanically isolated waveguide connection for a propagating signal, between a standardized waveguide (2) and a, to the standardized waveguide non-compatible, metalized chip-level waveguide (3). The metalized waveguide interface (1) is configured such that a first open-ended quarter wavelength waveguide (31) and a second open-ended quarter wavelength waveguide (32) is obtained along the directions d1 and d2, respectively, when the metalized chip-level waveguide (3) is mounted on the support surface (5). The interface is further configured such that third open-ended quarter wavelength waveguide (33) is obtained between the third surface portion (9) and the metalized chip-level waveguide (3) when the metalized chip-level waveguide (3) is mounted on the support surface (5).

Abstract: It is provided a waveguide comprising a tubular, electrically conductive waveguide body, the waveguide having a rectangular cross-section. The waveguide further comprises an electrically conductive foil comprising at least one matching portion arranged within the waveguide body, extending along a propagation direction of the waveguide body, and at least one connection portion arranged outside of the waveguide body, for connecting the waveguide to a component, wherein the matching portion of the foil is tapered in a propagation direction of the waveguide and arranged to form a ridge protruding from a sidewall of the waveguide along part of the length of the waveguide, and wherein the connection portion extends outside of the waveguide, in a propagation direction of the waveguide and in the same plane as the matching portion. It is also provided a waveguide arrangement and a method for manufacturing such a waveguide arrangement.

Abstract: The present disclosure relates to a waveguide transition arrangement (1) comprising a first ground plane (6) with a first aperture (7), a feed probe (4) that crosses the first aperture (7), a second ground plane (8) with a second aperture (9), and a waveguide resonator part (10) that has an opening (11) that faces the second aperture (9). The first ground plane (6) faces the second ground plane (8) and is positioned between the feed probe (4) and the second ground plane (8), and the second ground plane (8) faces the waveguide resonator part (10). A wall structure (12) is at least partly arranged between the first ground plane (6) and the second ground plane (8) such that a first cavity (13) is formed in an enclosed volume between them.

Abstract: A filter arrangement having three or more stacked metallization layers separated by printed circuit board, PCB, layers. Each metallization layer includes an aperture. The filter arrangement has a plurality of via-holes extending though the stacked metallization layers and through the separating Dielectric material layers, whereby the via-holes and the metallization layers delimit a cavity in each Dielectric material layer. The cavities in two consecutive Dielectric material layers being coupled by the aperture in the single metallization layer separating the two consecutive Dielectric material layers. The aperture of a topmost metallization layer being arranged as antenna element. The filter arrangement having a signal interface arranged as a conduit connecting at least one dielectric material layer to an exterior of the filter arrangement.

Abstract: A resonance cavity comprising a first layer of dielectric material having a first dielectric constant and a first thickness, a second layer of dielectric material having a second dielectric constant different from the first dielectric constant and a second thickness, a metal patch arranged between the first and the second layer of dielectric material, and an electromagnetically shielded enclosure having at least one aperture, the electromagnetically shielded enclosure arranged to enclose part of the first and second layers of dielectric material and the metal patch.

Abstract: A method (400) for positioning a first and a second radio antenna comprising the steps of configuring (SI) the first antenna to have a main lobe L1 and configuring (52) the second antenna to be a directive antenna having a main lobe L2. The method also comprising the steps of transmitting (S3) a first alignment signal from the first antenna to the second antenna and positioning (S4) the second antenna based on the received first alignment signal, as well as reconfiguring (S5) the first antenna to be a directive antenna having an antenna main lobe L3, the antenna main lobe L3 having a more narrow main lobe width than the antenna main lobe L1. The method provides a systematic approach to finding optimum antenna positions and corresponding main lobe directions which is especially suited for aligning directive radio antennas in NLOS communication scenarios.

Abstract: The present disclosure relates to a waveguide transition arrangement (1) comprising a first ground plane (6) with a first aperture (7), a feed probe (4) that crosses the first aperture (7), a second ground plane (8) with a second aperture (9), and a waveguide resonator part (10) that has an opening (11) that faces the second aperture (9). The first ground plane (6) faces the second ground plane (8) and is positioned between the feed probe (4) and the second ground plane (8), and the second ground plane (8) faces the waveguide resonator part (10). A wall structure (12) is at least partly arranged between the first ground plane (6) and the second ground plane (8) such that a first cavity (13) is formed in an enclosed volume between them.

Abstract: It is provided a waveguide comprising a tubular, electrically conductive waveguide body, the waveguide having a rectangular cross-section. The waveguide further comprises an electrically conductive foil comprising at least one matching portion arranged within the waveguide body, extending along a propagation direction of the waveguide body, and at least one connection portion arranged outside of the waveguide body, for connecting the waveguide to a component, wherein the matching portion of the foil is tapered in a propagation direction of the waveguide and arranged to form a ridge protruding from a sidewall of the waveguide along part of the length of the waveguide, and wherein the connection portion extends outside of the waveguide, in a propagation direction of the waveguide and in the same plane as the matching portion. It is also provided a waveguide arrangement and a method for manufacturing such a waveguide arrangement.

Abstract: 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 (w1, w2).

Abstract: An antenna arrangement comprising a SIW with at least one radiating arrangement. The SIW comprises a dielectric material, a first and second metal layer and a first and second electric wall element running essentially parallel and electrically connecting the metal layers. For each radiating arrangement, the antenna arrangement comprises at least one coupling aperture in the first metal layer, and for each coupling aperture there is a third wall element running between the first and second electric wall elements, across a SIW longitudinal extension (es). For each radiating arrangement, the antenna arrangement further comprises an at least partly electrically conducting antenna component which comprises at least four radiating elements and is surface-mounted on the first metal layer, enclosing at least one coupling aperture. For each radiating arrangement, electromagnetic signals are arranged to be transmitted between said coupling aperture and said radiating elements.

Abstract: A frequency demultiplexer comprising an input part (106) with an input port (101), a low pass filter (125) and a band-pass filter (108) with output ports (120, 145). The input part (106), the low-pass filter (125) and the band-pass filter (108) comprise open waveguide sections, and the band-pass filter (108) comprises gap-coupled resonators (130, 135, 140). The input part (106) and the low-pass filter (125) connect to the same resonator (130), the connection (121) of the low-pass filter (125) being at a first maximum distance (L1) from a center point (N) of the resonator and the connection (116) of the output port (101) being at a second maximum distance (L2) from said center point (N) of the resonator. The center point (N) corresponds to a wave node of a wavelength ?, where ?=2d/M, M is a positive integer value and d is the shortest end-to-end distance along the resonator.

Abstract: A duplex unit allowing simultaneous transmission and reception of microwave signals on at least partly overlapping frequency bands, comprising an interference canceller unit and a control unit, the duplex unit being arranged to receive a transmit signal and to output a first part of the transmit signal at an antenna port, the duplex unit further being arranged to receive a receive signal comprising a payload signal at the antenna port, and to output a combination of the receive signal and a filtered transmit signal as an interference suppressed receive signal of the duplex unit.

Abstract: A transceiver 100 for simultaneous transmission and reception of communication signals in a multiple-input multiple-output, MIMO, system allowing operation on at least partly overlapping frequency bands. The transceiver 100 comprising an antenna arrangement 110, a duplex arrangement 120, and a modem unit 130. The duplex arrangement 120 being adapted to forward a transmit signal T1 from the modem unit to the antenna arrangement 110. The duplex arrangement 120 also being adapted to receive a receive signal R1 from the antenna arrangement 110 and to forward an interference suppressed receive signal R2 to the modem unit. The duplex arrangement 120 comprising an interference cancellation unit adapted to generate the interference suppressed receive signal R2 by combining the receive signal R1 from the antenna arrangement and the transmit signal T1.