A BIAS CIRCUIT FOR A DOHERTY AMPLIFIER, AND A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:EP3910790A1

    公开(公告)日:2021-11-17

    申请号:EP21172978.5

    申请日:2021-05-10

    申请人: Syntronic AB

    发明人: WANG, Zhancang

    摘要: A bias circuit (100) for a Doherty amplifier comprising an input port (P0) with an input impedance (Zin), and configured to receive a bias signal from a power supply; a first output port (P1) configured to provide a bias signal to a first amplifier; a second output port (P2) configured to provide a bias signal to a second amplifier; a two port impedance transformer (101) with an input connected to the first input port (P0), and an output (102) of the two port impedance transformer (101) having an intermediate impedance (Zm); an in-phase N-port dividing impedance transformer (103) with an input (104) connected to the output (102) of the two port impedance transformer (101), wherein the in-phase N-port dividing impedance transformer (103) comprises a first output (105) connected to the first output port (P1) and a second output (106) connected to the second output port (P2).

    MULTI RADIATOR ANTENNA COMPRISING MEANS FOR INDICATING ANTENNA MAIN LOBE DIRECTION

    公开(公告)号:EP3411924A1

    公开(公告)日:2018-12-12

    申请号:EP17747875.7

    申请日:2017-02-02

    发明人: YMAN, Niclas

    摘要: A multi radiator antenna comprising an electrically conductive reflector, at least two radiating elements arranged on said reflector, a feeding network connected to the radiating elements, and a protective cover. The feeding network comprises a plurality of conductors for distributing signals to the radiators. The feeding network has means for adjusting relative phases of said signals in order to adjust a direction of the antenna main lobe of said multi-radiator base station antenna. The means for adjusting is provided with, or is connected to,an indicating portion configured to provide a visual indication of said direction. The protective cover is provided with an at least partially transparent wall portion arranged such that said indicating portion is visible there through.

    PATCHANTENNE
    10.
    发明授权

    公开(公告)号:EP1218960B1

    公开(公告)日:2004-12-29

    申请号:EP00966373.3

    申请日:2000-10-05

    IPC分类号: H01P5/00

    CPC分类号: H01Q9/0428 H01Q9/045

    摘要: The invention relates to a patch antenna, comprising a patch (1) located on one side of a substrate (2) and a connection for a supply conductor (14) on the opposite side of the substrate (2). According to the invention, the connection is configured as a segment of a ridge waveguide (3). The patch antenna is particularly suitable for emitting and receiving circular polarised radiation.

    摘要翻译: 本发明涉及一种贴片天线,包括位于衬底(2)的一侧上的贴片(1)和位于衬底(2)的相对侧上的用于供电导体(14)的连接。 根据本发明,该连接被配置为脊形波导(3)的一部分。 贴片天线特别适用于发射和接收圆偏振辐射。