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    • 6. 发明授权
    • Switching circuit
    • 开关电路
    • US08451044B2
    • 2013-05-28
    • US12493437
    • 2009-06-29
    • John NisbetMichael McPartlinChun-Wen Paul Huang
    • John NisbetMichael McPartlinChun-Wen Paul Huang
    • H03K17/16
    • H04B1/44H03K17/687H03K2217/0036
    • A method for controlling a switch based on transistors is disclosed. A switching circuit for switching a signal from an input port to an output port thereof is provided. A shunting circuit for switchably shunting the signal from the input port to ground is also provided. A control signal is generated for biasing a control port of the shunting circuit and an approximately complementary control signal is generated for biasing of the switching circuit to either shunt a signal received at the input port or to switch the signal to the output port. A further bias signal for biasing a port within the switching circuit along the signal path between the input port and the output.
    • 公开了一种用于控制基于晶体管的开关的方法。 提供了用于将信号从输入端口切换到其输出端口的开关电路。 还提供了用于将信号从输入端口切换到地的分流电路。 生成用于偏置分流电路的控制端口的控制信号,并且产生大致互补的控制信号以用于偏置开关电路以分流在输入端口接收的信号或将信号切换到输出端口。 用于沿着输入端口和输出端之间的信号路径偏置开关电路内的端口的另一个偏置信号。
    • 9. 发明授权
    • Device and methods for high isolation and interference suppression switch-filter
    • 高隔离和干扰抑制开关滤波器的设备和方法
    • US07359677B2
    • 2008-04-15
    • US11149143
    • 2005-06-10
    • Chun-Wen Paul HuangWilliam Vaillancourt
    • Chun-Wen Paul HuangWilliam Vaillancourt
    • H04B1/44
    • H04B1/48H04B1/525
    • Systems and methods are provided for a stacked die configuration of a high isolation switch and a rejection filter where transmit and receive signals are desired to have a high out-of-band rejection and a low loss band-pass region. In some aspects of the invention the high isolation switch is a double pole double throw switch modified to operate as a high isolation single pole double throw (SPDT) switch. In some aspects of the invention the high isolation switch is a conventional high isolation SPDT switch. The switch is mounted on a low profile rejection filter having metallization on a portion of an outer surface of the rejection filter. The metallization on the outer surface of the rejection filter provides an AC ground layer in close proximity to the switch that provides a short coupling path between the switch and the AC ground. The resulting switch-filter component also results in a smaller footprint than if the two devices were mounted individually and/or adjacently. The switch-filter component has applications in devices requiring high isolation between transmit and receive paths, for example use within a front-end module (FEM) of a single antenna, multi-radio device.
    • 提供了用于高隔离开关和抑制滤波器的堆叠管芯配置的系统和方法,其中希望发射和接收信号具有高的带外抑制和低损耗带通区域。 在本发明的一些方面,高隔离开关是双极双掷开关,被修改为作为高隔离单极双掷(SPDT)开关工作。 在本发明的一些方面,高隔离开关是传统的高隔离SPDT开关。 该开关安装在具有在拒绝滤波器的外表面的一部分上具有金属化的薄型阻挡滤波器。 在拒绝滤波器的外表面上的金属化提供了紧邻开关的交流接地层,其在开关和AC地之间提供短的耦合路径。 所产生的开关滤波器组件还导致比如果两个装置单独地和/或相邻地安装的更小的占地面积。 开关滤波器组件在需要在发射和接收路径之间高隔离的设备中具有应用,例如在单个天线的前端模块(FEM),多无线电设备中使用。