PHASE SHIFTER FOR PHASED ARRAY ANTENNA
    3.
    发明申请

    公开(公告)号:WO2019108190A1

    公开(公告)日:2019-06-06

    申请号:PCT/US2017/063882

    申请日:2017-11-30

    CPC classification number: H04B1/58 H01P5/18 H01P5/185 H03H7/185 H03H7/20 H03H7/21

    Abstract: Methods, systems, and circuitries are provided for shifting a phase of a radio frequency (RF) signal based on a target phase shift. In one example, a phase shifter includes hybrid coupler circuitry and variable attenuator circuitry. The hybrid coupler circuitry is configured to convert a radio frequency (RF) signal connected at a first port of the coupler to an in-phase (I) signal component at a second port of the hybrid coupler circuitry and a quadrature (Q) signal component at a third port of the hybrid coupler circuitry. The variable attenuator circuitry is configured to: attenuate the I signal component by a selected first impedance and attenuate the Q signal component by a selected second impedance. The first and second impedances are selected based on the target phase shift. The attenuated I signal component and the attenuated Q signal component are combined to create a phase shifted signal.

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