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    ATTENUATOR FOR QUBIT DRIVE SIGNALS
    2.
    发明公开
    ATTENUATOR FOR QUBIT DRIVE SIGNALS 审中-公开

    公开(公告)号：EP4235952A3

    公开(公告)日：2023-11-08

    申请号：EP23165988.9

    申请日：2019-02-01

    申请人： Google LLC

    发明人： NAAMAN, Ofer

    IPC分类号： H01P1/203 ,  H01P1/22 ,  H01P5/18

    摘要： An apparatus includes a directional coupler and an absorptive low pass filter, in which the directional coupler has a first transmission line extending from a first port to a second port and a second transmission line extending from a third port to a fourth port, the first transmission line and the second transmission line configured such that a portion of a signal travelling from the first port onto the first transmission line is coupled to the second transmission line and towards the third port.,The second port is connected to the fourth port of the directional coupler via the absorptive low pass filter. When the signal is input into the first port of the directional coupler and output through the third port of the directional coupler, the signal is substantially unattenuated if the frequency of the signal is in a passband of the absorptive low pass filter.

    ATTENUATOR FOR QUBIT DRIVE SIGNALS
    3.
    发明公开
    ATTENUATOR FOR QUBIT DRIVE SIGNALS 审中-公开

    公开(公告)号：EP4235952A2

    公开(公告)日：2023-08-30

    申请号：EP23165988.9

    申请日：2019-02-01

    申请人： Google LLC

    发明人： NAAMAN, Ofer

    IPC分类号： H01P1/215

    摘要： An apparatus includes a directional coupler and an absorptive low pass filter, in which the directional coupler has a first transmission line extending from a first port to a second port and a second transmission line extending from a third port to a fourth port, the first transmission line and the second transmission line configured such that a portion of a signal travelling from the first port onto the first transmission line is coupled to the second transmission line and towards the third port.,The second port is connected to the fourth port of the directional coupler via the absorptive low pass filter. When the signal is input into the first port of the directional coupler and output through the third port of the directional coupler, the signal is substantially unattenuated if the frequency of the signal is in a passband of the absorptive low pass filter.