RF SWITCH WITH COMPENSATION AND GATE BOOTSTRAPPING

    公开(公告)号:US20240154610A1

    公开(公告)日:2024-05-09

    申请号:US18406982

    申请日:2024-01-08

    CPC classification number: H03K17/16 H03K17/04106 H03K17/74 H03K17/145

    Abstract: A radio frequency switch device includes a first transistor and a second transistor; a compensation network coupled between a body terminal of the first transistor and a source/drain terminal of the second transistor; and a bootstrapping network having a first terminal coupled to a first bias terminal, a second terminal coupled to a gate terminal of the first transistor, and a third terminal coupled to the body terminal of the first transistor, wherein the bootstrapping network establishes a low impedance path between the gate terminal and the body terminal of the first transistor in response to a first voltage value of the first bias terminal, and wherein the bootstrapping network establishes a high impedance path between the gate terminal and the body terminal of the first transistor in response to a second voltage value of the first bias terminal.

    RF impedance measurement and tuning system

    公开(公告)号:US10816581B2

    公开(公告)日:2020-10-27

    申请号:US16132816

    申请日:2018-09-17

    Abstract: A radio-frequency system includes an impedance tuning network having a plurality of selectable impedance states and a first port for coupling to a complex load impedance, a detector coupled to a second port of the impedance tuning network and configured to measure scalar values of reflection coefficients at the second port, and a controller configured to, for a first radio-frequency band, sequentially tune the impedance tuning network to at least three different impedance states in each of which the detector measures a scalar value of a corresponding reflection coefficient at the second port, and estimates a value of the complex load impedance based on the scalar values measured by the detector.

    Communication device and method for determining a load impedance

    公开(公告)号:US10170822B2

    公开(公告)日:2019-01-01

    申请号:US15610697

    申请日:2017-06-01

    Abstract: According to one embodiment, a communication device is described comprising an antenna, a signal path for supplying a signal to the antenna, two directional couplers arranged within the signal path, wherein each directional coupler is coupled to an adjustable impedance defining the characteristic impedance of the directional coupler, a controller configured to set, for each of a plurality of impedances, the adjustable impedances of the directional couplers to the impedance, a return loss measurement circuit configured to determine, for each of the plurality of impedances, a return loss of the signal path when the adjustable impedances of the directional couplers are set to the impedance and a load impedance determination circuit configured to determine a load impedance of the signal path based on the determined return losses.

    System and Method for a Directional Coupler
    7.
    发明申请
    System and Method for a Directional Coupler 有权
    方向耦合器的系统和方法

    公开(公告)号:US20150200437A1

    公开(公告)日:2015-07-16

    申请号:US14155130

    申请日:2014-01-14

    Abstract: In accordance with an embodiment, a circuit includes a current sensing circuit comprising a current input terminal coupled to an input port, a current output terminal coupled to a transmitted port, and a current sensing output terminal configured to provide a current sensing signal proportional to a current flowing between the current input terminal and the current output terminal. The circuit further includes a voltage sensing circuit having a voltage input terminal coupled to the transmitted port and a voltage sensing output terminal configured to provide a voltage sensing signal proportional to a voltage at the transmitted port. A combining circuit has a first input coupled to the current sensing output terminal, a second input coupled to the voltage sensing output terminal, and a combined output node coupled to an output port.

    Abstract translation: 根据实施例,电路包括电流检测电路,其包括耦合到输入端口的电流输入端子,耦合到发射端口的电流输出端子,以及电流感测输出端子,其被配置为提供与 电流输入端与电流输出端之间流动的电流。 电路还包括电压感测电路,其电压输入端耦合到传输端口,电压感测输出端被配置为提供与传输端口处的电压成比例的电压感测信号。 组合电路具有耦合到电流感测输出端的第一输入,耦合到电压感测输出端的第二输入和耦合到输出端的组合输出节点。

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