Abstract: There are provided mechanisms for generating a beam set. A method is performed by a radio transceiver device. The method comprises generating the beam set as combination of at least two beam pairs. Each beam pair is formed by two respective beams with orthogonal polarizations. The two beams have their pointing directions separated by a first angular separation delta1>0. Neighbouring beam pairs have their pointing directions separated by a second angular separation delta2>0. The first angular separation delta1 is a function of the second angular separation delta2.

Abstract: A wireless communication system node has at least two antenna ports, a beamforming controller, and a beamforming network. The beamforming network has at least two beam ports that are adapted to provide corresponding beams. The beamforming controller is arranged to control the beamforming network such that the beams have a common envelope in a desired plane, where the common envelope is adapted to provide coverage for a certain communication system sector.

Abstract: The present disclosure relates to an array antenna arrangement comprising at least one set of at least two sub-array antennas. Each set of sub-array antennas is mounted such that a corresponding array antenna column is formed. For each polarization in each set of sub-array antennas, each sub-array antenna comprises a corresponding sub-array antenna port that is associated with a certain sub-array antenna beam pointing direction setting, and each sub-array antenna port is connected to a corresponding radio chain in a set of radio chains, where each set of radio chains is adapted to provide a corresponding digital antenna beam pointing direction setting. In at least one set of sub-array antennas, at least one sub-array beam pointing direction setting, differs from a corresponding digital antenna beam pointing direction setting.

Abstract: There is provided mechanisms for OTA calibration of an AAS. The AAS comprises N antenna branches, each of which comprises a respective subarray. The subarray of each antenna branch gives rise to a subarray antenna pattern extending over an angular interval. A method is performed by a test equipment. The method comprises obtaining measurement values for each of the antenna branches. At least one measurement value is obtained per each antenna branch. The method comprises determining one calibration factor value per antenna branch using the measurement values and taking the subarray antenna patterns into account. The method comprises applying the determined calibration factor values to the N antenna branches, thereby calibrating the AAS.

Abstract: There are provided mechanisms for generating a beam set. A method is performed by a radio transceiver device. The method comprises generating the beam set as combination of at least two beam pairs. Each beam pair is formed by two respective beams with orthogonal polarizations. The two beams have their pointing directions separated by a first angular separation delta1>0. Neighbouring beam pairs have their pointing directions separated by a second angular separation delta2>0. The first angular separation delta1 is a function of the second angular separation delta2.

Abstract: A wireless communication system node has at least two antenna ports, a beamforming controller, and a beamforming network. The beamforming network has at least two beam ports that are adapted to provide corresponding beams. The beamforming controller is arranged to control the beamforming network such that the beams have a common envelope in a desired plane, where the common envelope is adapted to provide coverage for a certain communication system sector.

Abstract: The present disclosure relates to a wireless communication system node (1), where the node (1) comprises at least two antenna ports (P1A, P1B, P1C, P1D; P2A, P2B, P2C, P2D). The node (1) further comprises a beamforming controller (2) and a 5 beamforming network (3) which in turn comprises at least two beam ports (4, 5, 6, 7; 8, 9, 10, 11) that are adapted to provide corresponding beams (12, 13, 14, 15; 16, 17, 18, 19). The beamforming controller (2) is arranged to control the beamforming network (3) such that the beams (12, 13, 14, 15; 16, 17, 18, 19) have a common envelope (20) in a desired plane, where the common envelope (20) is adapted to a 10 desired coverage for a certain communication system sector (37).

Abstract: A method (20) of determining sign of a calibration compensation for use in an antenna system (10) is provided, the antenna system (10) comprising individually calibrated subarrays (2a, 2b).

Abstract: A method (20) of calibrating an antenna system (10) comprising a number of antenna elements is provided.

Abstract: A method (20) of determining sign of a calibration compensation for use in an antenna system (10) is provided, the antenna system (10) comprising individually calibrated subarrays (2a, 2b).

Abstract: A method (20) of calibrating an antenna system (10) comprising a number of antenna elements is provided.

Abstract: The present disclosure relates to a wireless communication system node (1), where the node (1) comprises at least two antenna ports (P1A, P1B, P1C, P1D; P2A, P2B, P2C, P2D). The node (1) further comprises a beamforming controller (2) and a 5 beamforming network (3) which in turn comprises at least two beam ports (4, 5, 6, 7; 8, 9, 10, 11) that are adapted to provide corresponding beams (12, 13, 14, 15; 16, 17, 18, 19). The beamforming controller (2) is arranged to control the beamforming network (3) such that the beams (12, 13, 14, 15; 16, 17, 18, 19) have a common envelope (20) in a desired plane, where the common envelope (20) is adapted to a 10 desired coverage for a certain communication system sector (37).

Abstract: A method of calibrating an antenna system comprising a number of antenna elements is provided. The method comprises transmitting and measuring at least for first and second reference antenna elements, thereby obtaining first and second sets of corresponding number of measurement values; calculating, for a first type of beamforming and for each calibration antenna element j a correction value—?Rijk,Type 1, thereby obtaining a first part of a correction matrix; calculating, for a second type of beamforming and for each branch j a correction value ?Ri,jType 2, thereby obtaining a second part of the correction matrix; performing an optimization procedure using as input the correction matrix thereby obtaining, for each row of the correction matrix, a respective optimized constant, and calculating a compensation value ?ri for each antenna element based on the respective optimized constant.

Abstract: A method of calibrating an antenna system comprising a number of antenna elements is provided. The method comprises transmitting and measuring at least for first and second reference antenna elements, thereby obtaining first and second sets of corresponding number of measurement values; calculating, for a first type of beamforming and for each calibration antenna element j a correction value—?Rijk,Type 1, thereby obtaining a first part of a correction matrix; calculating, for a second type of beamforming and for each branch j a correction value ?Ri,jType 2, thereby obtaining a second part of the correction matrix; performing an optimization procedure using as input the correction matrix thereby obtaining, for each row of the correction matrix, a respective optimized constant, and calculating a compensation value ?ri for each antenna element based on the respective optimized constant.

Abstract: The present disclosure relates to a wireless communication network node which comprises an antenna arrangement having at least three antenna columns. Each antenna column comprises at least two antenna elements of a first polarization (P1) and at least two antenna elements of a second polarization (P2), orthogonal to the first polarization (P1). For each antenna column, the antenna elements of the first polarization (P1) are connected to a combined port of a corresponding first filter device, and the antenna elements of the second polarization (P2) are connected to a combined port of a corresponding second filter device. Each of the filter devices is arranged to separate signals of different frequency bands between the respective combined port and respective filter ports. The antenna arrangement is arranged for transmission at two different channels (TX1, TX2) and reception at four different channels (RX1, RX2, RX3, RX4) for three different frequency bands (f1, f2, f3).

Abstract: The present invention relates to a wireless communication node (1) comprising at least one antenna arrangement (2, 3, 4). Each antenna arrangement (2, 3, 4) comprises at least three antenna devices (5, 6, 7, 8), comprising corresponding pairs of antenna ports (A, B, C, D) with a corresponding first and second antenna port (P1A, P1 B, P1 C, P1D; P2A, P2B, P2C, P2D). Each antenna port (P1A, P1 B, P1C, P1D; P2A, P2B, P2C, P2D) is arranged downlink and uplink and is connected to a corresponding radio transceiver unit (11, 12, 13, 14, 15, 16, 17, 18). Each antenna device (5, 6, 7, 8) comprises at least one corresponding dual polarized antenna element (19, 20, 21, 22) arranged for transmitting and receiving signals at a first polarization (P1) via the corresponding first antenna port (P1A, P1B, P1 C, P1 D) and for transmitting and receiving signals at a second polarization (P2) via the corresponding second antenna port (P2A, P2B, P2C, P2D).

Abstract: The invention provides an antenna arrangement having an operating frequency band with a mean wavelength ? and comprising at least two columns of antenna elements with at least two antenna elements in each column. Each column of antenna elements extends above a separate elongated column ground plane with a column separation defined as a distance between mid-points of neighbouring column ground planes. The antenna elements in each column are located along a column axis pointing in a longitudinal direction of the column ground plane wherein all column separations are below 0.9? and wherein a parasitic element extends above at least one antenna element in each column. Parameters of the parasitic element are adapted for proper excitation thus achieving a reduced beamwidth for each of said columns of antennas. The invention also provides a method to manufacture the antenna arrangement.

Abstract: A node in a wireless communication network, includes a 4TX/4RX triple band antenna arrangement with at least three antenna columns, each antenna column includes two sets of subarrays. Each set of subarrays has at least two subarrays with at least one antenna element each. Each set of subarrays includes antenna elements having one of a first polarization and a mutually orthogonal second polarization. For each subarray, the antenna elements are connected to a combined port of a corresponding filter device. Each filter device has a first filter port and a second filter port. For each set of subarrays, the first filter ports of each pair of filter devices that are connected to said set of subarrays are pair-wise connected to a corresponding phase altering device. The second filter ports of each pair of filter devices connected to the set of subarrays are pair-wise connected to another corresponding phase altering device.

Abstract: The present disclosure relates to a wireless communication network node (1) which comprises an antenna arrangement (2) having at least three antenna columns (3, 4, 5). Each antenna column (3, 4, 5) comprises at least two antenna elements (14, 15; 16, 17; 22, 23; 24, 25; 30, 31; 32, 33) of a first polarization (P1) and at least two antenna elements (18, 19; 20, 21; 26, 27; 28, 29; 34, 35; 36, 37) of a second polarization (P2), orthogonal to the the first polarization (P1). For each antenna column (3, 4, 5), the antenna elements (14, 15; 16, 17; 22, 23; 24, 25; 30, 31; 32, 33) of the first polarization (P1) are connected to a combined port (64, 65, 66) of a corresponding first filter device (38, 39, 40), and the antenna elements (18, 19; 20, 21; 26, 27; 28, 29; 34, 35; 36, 37) of the second polarization (P2) are connected to a combined port (67, 68, 69) of a corresponding second filter device (44, 45, 46).

Abstract: The present invention relates to a wireless communication node (1) comprising at least one antenna arrangement (2, 3, 4). Each antenna arrangement (2, 3, 4) comprises at least three antenna devices (5, 6, 7, 8), comprising corresponding pairs of antenna ports (A, B, C, D) with a corresponding first and second antenna port (P1A, P1 B, P1 C, P1D; P2A, P2B, P2C, P2D). Each antenna port (P1A, P1 B, P1C, P1D; P2A, P2B, P2C, P2D) is arranged downlink and uplink and is connected to a corresponding radio transceiver unit (11, 12, 13, 14, 15, 16, 17, 18). Each antenna device (5, 6, 7, 8) comprises at least one corresponding dual polarized antenna element (19, 20, 21, 22) arranged for transmitting and receiving signals at a first polarization (P1) via the corresponding first antenna port (P1A, P1B, P1 C, P1 D) and for transmitting and receiving signals at a second polarization (P2) via the corresponding second antenna port (P2A, P2B, P2C, P2D).