Switch circuit for ultra-high frequency band

    公开(公告)号:US11955961B2

    公开(公告)日:2024-04-09

    申请号:US17879047

    申请日:2022-08-02

    CPC classification number: H03K17/687

    Abstract: Disclosed is a switch circuit for an ultra-high frequency band, which includes a transistor including a first terminal connected to an input stage, a second terminal connected to an output stage, and a gate terminal, an inductor connected to the transistor in parallel, between the input stage and the output stage, a variable gate driver to apply a gate input voltage to the gate terminal and, an input resistor connected between the variable gate driver and the gate terminal. The variable gate driver adjusts the gate input voltage to be in one of a first voltage level for turning on the transistor and a second voltage level for turning off the transistor. The second voltage level varies depending on a capacitance between the first terminal and the second terminal, when the transistor is in a turn-off state.

    Microwave amplification circuit
    3.
    发明授权

    公开(公告)号:US11223333B2

    公开(公告)日:2022-01-11

    申请号:US16941691

    申请日:2020-07-29

    Abstract: Provided is an amplification circuit for amplifying an input signal. The amplification circuit includes an input stage including an input matching circuit that receives the input signal and an input attenuation circuit that attenuates a gain for the input signal outside an operating frequency band of the amplification circuit, a transistor that amplifies the input signal provided from the input stage, and an output stage including an output matching circuit that receives a signal amplified by the transistor and an output attenuation circuit that attenuates the gain for the input signal outside the operating frequency band of the amplification circuit, and the input attenuation circuit includes a first resistor and a second resistor that are connected to a ground voltage, a first passive element connected between the input matching circuit and the second resistor, and a second passive element connected between the first passive element and the first resistor.

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