AMPLIFIER HAVING A VIRTUAL GROUND AND METHOD THEREOF
    2.
    发明申请
    AMPLIFIER HAVING A VIRTUAL GROUND AND METHOD THEREOF 失效
    具有虚拟接地的放大器及其方法

    公开(公告)号:US20090179697A1

    公开(公告)日:2009-07-16

    申请号:US12013070

    申请日:2008-01-11

    IPC分类号: H03F3/38

    CPC分类号: H03F3/68 H03F3/185 H03F3/2171

    摘要: An amplifier comprises first, second, and third modulators. The first modulator includes an input for receiving a first input signal, and an output for providing a first modulated output signal corresponding to the first input signal. The second modulator includes an input for receiving a second input signal, and an output for providing a second modulated output signal corresponding to the second input signal. The third modulator has an input for receiving a third input signal, and an output for providing a third modulated output signal corresponding to the third input signal and for providing a virtual ground. A first amplifier circuit is coupled to the outputs of the first and third modulators for driving a first load. A second amplifier circuit is coupled to the outputs of the second and third modulators for driving a second load.

    摘要翻译: 放大器包括第一,第二和第三调制器。 第一调制器包括用于接收第一输入信号的输入端和用于提供对应于第一输入信号的第一调制输出信号的输出端。 第二调制器包括用于接收第二输入信号的输入端和用于提供对应于第二输入信号的第二调制输出信号的输出端。 第三调制器具有用于接收第三输入信号的输入端和用于提供对应于第三输入信号的第三调制输出信号并用于提供虚拟接地的输出端。 第一放大器电路耦合到第一和第三调制器的输出端,用于驱动第一负载。 第二放大器电路耦合到第二和第三调制器的输出端,用于驱动第二负载。

    Facsimile interface device for radios
    3.
    发明授权
    Facsimile interface device for radios 失效
    无线电传真机接口设备

    公开(公告)号:US5237429A

    公开(公告)日:1993-08-17

    申请号:US823053

    申请日:1992-01-17

    IPC分类号: H04B1/38 H04N1/00

    摘要: Briefly, according to the invention, the interface device comprises matching device (20 and 22) for coupling a duplex information signal (21 and 23) to a simplex or a duplex radio (6) which provides a corresponding information signal (27) acknowledged by the half duplex or full duplex radio (6). Additionally, a signal detecting means (24) determines a desired signal strength and controls an interrupt signal (32). A means for sending (26) the interrupt signal (32) to the radio (6) sends the interrupt signal once the signal detecting means detects the desired signal strength. Finally, the interface device of the present invention comprises a means for sending (26) the corresponding information (27) once the interrupt signal is sent.

    摘要翻译: 简而言之,根据本发明,接口设备包括用于将双工信息信号(21和23)耦合到单工或双工无线电(6)的匹配设备(20和22),其提供相应的信息信号(27),其被 半双工或全双工无线电(6)。 另外,信号检测装置(24)确定期望的信号强度并控制中断信号(32)。 一旦信号检测装置检测到所需信号强度,将中断信号(26)发送(26)给无线电装置(6)的装置发送中断信号。 最后,本发明的接口装置包括一旦中断信号被发送就发送(26)相应信息(27)的装置。

    Amplifier having a virtual ground and method thereof
    4.
    发明授权
    Amplifier having a virtual ground and method thereof 失效
    具有虚拟地面的放大器及其方法

    公开(公告)号:US07554391B1

    公开(公告)日:2009-06-30

    申请号:US12013070

    申请日:2008-01-11

    IPC分类号: H03F3/38

    CPC分类号: H03F3/68 H03F3/185 H03F3/2171

    摘要: An amplifier comprises first, second, and third modulators. The first modulator includes an input for receiving a first input signal, and an output for providing a first modulated output signal corresponding to the first input signal. The second modulator includes an input for receiving a second input signal, and an output for providing a second modulated output signal corresponding to the second input signal. The third modulator has an input for receiving a third input signal, and an output for providing a third modulated output signal corresponding to the third input signal and for providing a virtual ground. A first amplifier circuit is coupled to the outputs of the first and third modulators for driving a first load. A second amplifier circuit is coupled to the outputs of the second and third modulators for driving a second load.

    摘要翻译: 放大器包括第一,第二和第三调制器。 第一调制器包括用于接收第一输入信号的输入端和用于提供对应于第一输入信号的第一调制输出信号的输出端。 第二调制器包括用于接收第二输入信号的输入端和用于提供对应于第二输入信号的第二调制输出信号的输出端。 第三调制器具有用于接收第三输入信号的输入端和用于提供对应于第三输入信号的第三调制输出信号并用于提供虚拟接地的输出端。 第一放大器电路耦合到第一和第三调制器的输出端,用于驱动第一负载。 第二放大器电路耦合到第二和第三调制器的输出端,用于驱动第二负载。