BUTLER MATRIX CIRCUIT, PHASED ARRAY ANTENNA, FRONT END MODULE, AND WIRELESS COMMUNICATION TERMINAL

    公开(公告)号:EP3726644A1

    公开(公告)日:2020-10-21

    申请号:EP18888427.4

    申请日:2018-09-06

    发明人: MORITA, Shinya

    摘要: [Object] There is provided a Butler matrix circuit that makes it possible to further reduce volume and power consumption and to obtain symmetrical radiation characteristics.
    [Solution] There is provided a Butler matrix circuit including: four processing-circuit-side terminals; four antenna-side terminals; a first 90° hybrid coupler coupled to a first processing-circuit-side terminal and a second processing-circuit-side terminal; a second 90° hybrid coupler coupled to a third processing-circuit-side terminal and a fourth processing-circuit-side terminal; a third 90° hybrid coupler coupled to a first antenna-side terminal and a third antenna-side terminal; a fourth 90° hybrid coupler coupled to a second antenna-side terminal and a fourth antenna-side terminal; a first 90° delay circuit provided between the first 90° hybrid coupler and the third 90° hybrid coupler; and a second 90° delay circuit provided between the first 90° hybrid coupler and the fourth 90° hybrid coupler.

    A BEAMFORMING ANTENNA SYSTEM COMPRISING A CYLINDRICAL BEAMFORMING ANTENNA

    公开(公告)号:EP3512039A1

    公开(公告)日:2019-07-17

    申请号:EP18151190.8

    申请日:2018-01-11

    摘要: The invention relates to a beamforming antenna system (100). The beamforming antenna system (100) comprises a cylindrical beamforming antenna (101) having a cylindrical surface and an array (102) of antenna elements. The beamforming antenna system (100) further comprises a driving circuit (103) being configured to drive a subarray of the array (102) of antenna elements to generate a spatially directed transmission beam. The driving circuit (103) comprises a storage (105) being configured to store reference phase shift values for generating spatially directed transmission beams using a planar beamforming antenna. The driving circuit (103) further comprises a processor (107) being configured to select a subset of the pre-stored reference phase shift values, to adapt the selected subset of pre-stored reference phase shift values to the cylindrical distribution of the array (102) of antenna elements of the cylindrical beamforming antenna (101) to obtain adapted phase shift values, and to drive the subarray of the array (102) of antenna elements of the cylindrical beamforming antenna (101) using the adapted phase shift values to generate the spatially directed transmission beam.

    A SIGNAL COMBINER, METHOD AND COMPUTER PROGRAM PRODUCT

    公开(公告)号:EP2715868B1

    公开(公告)日:2018-12-26

    申请号:EP11729192.2

    申请日:2011-06-01

    IPC分类号: H01Q3/40 H01Q25/00

    摘要: A signal combiner for combining transmission signals to be supplied to four antennas devices, wherein two of the antenna devices are polarized in a first orientation and two of the antenna devices are polarized in a second orientation essentially orthogonal to the first orientation. The signal combiner comprises: four input connections arranged to receive the transmission signals; four output connections arranged to drive a respective one of the four of antenna devices using respective output signals. The signal combiner is arranged to combine transmission signals supplied on each input connection to all of the four output connections using beam forming and phase adjustment, such that, in use, each supplied transmission signal generates a central beam polarized in the first orientation and a side beam polarized in the second orientation. It is also presented a corresponding method, computer program and computer program product.

    Reconfigurable beam-forming-network architecture.
    19.
    发明授权
    Reconfigurable beam-forming-network architecture. 有权
    可重构波束形成网络架构。

    公开(公告)号:EP2296225B1

    公开(公告)日:2018-05-09

    申请号:EP09290697.3

    申请日:2009-09-10

    发明人: Angeletti, Piero

    摘要: A beam-forming network comprising: a plurality ( N I ) of input signal ports (IP); a plurality ( N O ) of output signal ports (OP); a weighting and interconnecting network (WIN) comprising a plurality of signal dividers (SD), phase and amplitude weighting elements (WE), switches (SW1, SW2) and signal combiners (SC), for associating each input port to output ports through respective weighting units; characterized in that either input (IP) or output (OP) ports, or both, are partitioned into disjoint equivalence classes (IEC, OEC), at least a majority of said equivalence classes comprising more than one port; and in that the network is either configured in order to associate each input port to at most one output port for each output equivalence class, or to associate each output port to at most one input port for each input equivalence class, or both. A multibeam antenna comprising such a beam-forming network. An electronic circuit for implementing such a beam-forming network.