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    • 75. 发明授权
    • Systems and methods for online phase calibration
    • 用于在线相位校准的系统和方法
    • US08314620B2
    • 2012-11-20
    • US13150584
    • 2011-06-01
    • Emad Andarawis Andarawis
    • Emad Andarawis Andarawis
    • G01R25/00G01B7/00
    • H03D13/00
    • A system for online relative phase calibration is provided. The system includes at least one excitation source configured to generate multiple excitation signals. The system also includes at least two sensors coupled to respective ones of the at least one excitation source via a transmission line, wherein the two sensors are configured to receive respective ones of the excitation signals. The system further includes at least two phase detectors configured to receive at least two reflected signals from the two sensors via the transmission line, wherein each of the two phase detectors are configured to output a respective voltage representing a phase difference between respective ones of the reflected signals and respective ones of the excitation signals. The system also includes a switch coupled to the sensors and the phase detectors, the switch configured to switch the phase detectors between the sensors at a pre-determined switching interval. The system further includes a calibration module coupled to the phase detectors, wherein the calibration module is configured to receive and process the respective voltage from the at least two phase detectors to generate respective calibrated voltage signals, wherein the calibration module is further configured to and match the calibrated voltage signals of each of the phase detectors.
    • 提供了一种在线相位校准系统。 该系统包括被配置为产生多个激励信号的至少一个激励源。 该系统还包括经由传输线耦合到至少一个激励源中的相应激励源的至少两个传感器,其中两个传感器被配置为接收相应的激励信号。 该系统还包括至少两个相位检测器,其被配置为经由传输线从两个传感器接收至少两个反射信号,其中两个相位检测器中的每一个被配置为输出表示相应反射信号之间的相位差的相应电压 信号和各个激励信号。 该系统还包括耦合到传感器和相位检测器的开关,该开关被配置成以预定的切换间隔在传感器之间切换相位检测器。 所述系统还包括耦合到所述相位检测器的校准模块,其中所述校准模块被配置为接收并处理来自所述至少两个相位检测器的相应电压以产生相应的校准电压信号,其中所述校准模块还被配置为并匹配 每个相位检测器的校准电压信号。
    • 79. 发明申请
    • SYSTEMS AND METHODS FOR ONLINE PHASE CALIBRATION
    • 用于在线相位校准的系统和方法
    • US20110227585A1
    • 2011-09-22
    • US13150584
    • 2011-06-01
    • Emad Andarawis Andarawis
    • Emad Andarawis Andarawis
    • G01R35/00
    • H03D13/00
    • A system for online relative phase calibration is provided. The system includes at least one excitation source configured to generate multiple excitation signals. The system also includes at least two sensors coupled to respective ones of the at least one excitation source via a transmission line, wherein the two sensors are configured to receive respective ones of the excitation signals. The system further includes at least two phase detectors configured to receive at least two reflected signals from the two sensors via the transmission line, wherein each of the two phase detectors are configured to output a respective voltage representing a phase difference between respective ones of the reflected signals and respective ones of the excitation signals. The system also includes a switch coupled to the sensors and the phase detectors, the switch configured to switch the phase detectors between the sensors at a pre-determined switching interval. The system further includes a calibration module coupled to the phase detectors, wherein the calibration module is configured to receive and process the respective voltage from the at least two phase detectors to generate respective calibrated voltage signals, wherein the calibration module is further configured to and match the calibrated voltage signals of each of the phase detectors.
    • 提供了一种在线相位校准系统。 该系统包括被配置为产生多个激励信号的至少一个激励源。 该系统还包括经由传输线耦合到至少一个激励源中的相应激励源的至少两个传感器,其中两个传感器被配置为接收相应的激励信号。 该系统还包括至少两个相位检测器,其被配置为经由传输线从两个传感器接收至少两个反射信号,其中两个相位检测器中的每一个被配置为输出表示相应反射信号之间的相位差的相应电压 信号和各个激励信号。 该系统还包括耦合到传感器和相位检测器的开关,该开关被配置成以预定的切换间隔在传感器之间切换相位检测器。 所述系统还包括耦合到所述相位检测器的校准模块,其中所述校准模块被配置为接收并处理来自所述至少两个相位检测器的相应电压以产生相应的校准电压信号,其中所述校准模块还被配置为并匹配 每个相位检测器的校准电压信号。