CIRCUIT FOR DEMODULATING A PHASE MODULATED SIGNAL
    1.
    发明申请
    CIRCUIT FOR DEMODULATING A PHASE MODULATED SIGNAL 有权
    用于解调相位调制信号的电路

    公开(公告)号:US20100303173A1

    公开(公告)日:2010-12-02

    申请号:US12471864

    申请日:2009-05-26

    IPC分类号: H04L27/22 H03D3/00

    CPC分类号: H04L27/2332 H03D3/00

    摘要: A demodulator is provided for demodulating a phase-modulated data signal. The demodulator includes a phase frequency detector to output a voltage representing a phase difference between a received phase-modulated data signal and a reference clock signal. The voltage is input to first and second phase change detectors, which are provided to measure the phase difference of the phase-modulated data signal during first and second time periods, respectively.

    摘要翻译: 解调器被提供用于解调相位调制数据信号。 解调器包括相位频率检测器,用于输出表示接收到的相位调制数据信号和参考时钟信号之间的相位差的电压。 电压被输入到第一和第二相位变化检测器,它们分别用于测量在第一和第二时间段期间的相位调制数据信号的相位差。

    CIRCUIT AND METHOD FOR RECTIFYING AND REGULATING VOLTAGES
    2.
    发明申请
    CIRCUIT AND METHOD FOR RECTIFYING AND REGULATING VOLTAGES 有权
    用于整流和调节电压的电路和方法

    公开(公告)号:US20090141518A1

    公开(公告)日:2009-06-04

    申请号:US11948037

    申请日:2007-11-30

    IPC分类号: G05F3/02

    摘要: A circuit having a first input and a second input configured to apply an alternating voltage, a first output and a second output configured to supply a rectified and regulated voltage, a rectifier bridge circuit having a current return circuit, a third transistor and a fourth transistor, and a controller configured to regulate the voltage between the first and the second output to a constant value. The current return circuit is connected to the first input, the second input and to the second output. The third transistor is configured as a series voltage regulator and is connected to the first input and the first output. The fourth transistor is configured as a series voltage regulator and is connected to the second input and the first output. The controller is coupled to a control input of the third transistor and to a control input of the fourth transistor. Further, a method for rectifying and regulating voltages of a circuit is provided. The circuit and the method can be used in a contactless chip card.

    摘要翻译: 具有第一输入和第二输入的电路,被配置为施加交流电压,第一输出和第二输出,被配置为提供经整流和调节的电压,具有电流返回电路的整流桥电路,第三晶体管和第四晶体管 以及控制器,被配置为将第一和第二输出之间的电压调节到恒定值。 电流返回电路连接到第一输入端,第二输入端和第二输出端。 第三晶体管被配置为串联电压调节器,并连接到第一输入端和第一输出端。 第四晶体管被配置为串联电压调节器,并连接到第二输入端和第一输出端。 控制器耦合到第三晶体管的控制输入和第四晶体管的控制输入。 此外,提供了用于整流和调节电路电压的方法。 电路和方法可用于非接触式芯片卡。

    Circuit for demodulating a phase modulated signal
    3.
    发明授权
    Circuit for demodulating a phase modulated signal 有权
    用于解调相位调制信号的电路

    公开(公告)号:US08422594B2

    公开(公告)日:2013-04-16

    申请号:US12471864

    申请日:2009-05-26

    IPC分类号: H04L27/00

    CPC分类号: H04L27/2332 H03D3/00

    摘要: A demodulator is provided for demodulating a phase-modulated data signal. The demodulator includes a phase frequency detector to output a voltage representing a phase difference between a received phase-modulated data signal and a reference clock signal. The voltage is input to first and second phase change detectors, which are provided to measure the phase difference of the phase-modulated data signal during first and second time periods, respectively.

    摘要翻译: 解调器被提供用于解调相位调制数据信号。 解调器包括相位频率检测器,用于输出表示接收到的相位调制数据信号和参考时钟信号之间的相位差的电压。 电压被输入到第一和第二相位变化检测器,它们分别用于测量在第一和第二时间段期间的相位调制数据信号的相位差。

    Circuit and method for rectifying and regulating voltages
    4.
    发明授权
    Circuit and method for rectifying and regulating voltages 有权
    用于整流和调节电压的电路和方法

    公开(公告)号:US07738272B2

    公开(公告)日:2010-06-15

    申请号:US11948037

    申请日:2007-11-30

    IPC分类号: H02M7/08

    摘要: A circuit having a first input and a second input configured to apply an alternating voltage, a first output and a second output configured to supply a rectified and regulated voltage, a rectifier bridge circuit having a current return circuit, a third transistor and a fourth transistor, and a controller configured to regulate the voltage between the first and the second output to a constant value. The current return circuit is connected to the first input, the second input and to the second output. The third transistor is configured as a series voltage regulator and is connected to the first input and the first output. The fourth transistor is configured as a series voltage regulator and is connected to the second input and the first output. The controller is coupled to a control input of the third transistor and to a control input of the fourth transistor. Further, a method for rectifying and regulating voltages of a circuit is provided. The circuit and the method can be used in a contactless chip card.

    摘要翻译: 具有第一输入和第二输入的电路,被配置为施加交流电压,第一输出和第二输出,被配置为提供经整流和调节的电压,具有电流返回电路的整流桥电路,第三晶体管和第四晶体管 以及控制器,被配置为将第一和第二输出之间的电压调节到恒定值。 电流返回电路连接到第一输入端,第二输入端和第二输出端。 第三晶体管被配置为串联电压调节器,并连接到第一输入端和第一输出端。 第四晶体管被配置为串联电压调节器,并连接到第二输入端和第一输出端。 控制器耦合到第三晶体管的控制输入和第四晶体管的控制输入。 此外,提供了用于整流和调节电路电压的方法。 电路和方法可用于非接触式芯片卡。