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    • 4. 发明授权
    • Inductance-capacitance (LC) oscillator
    • 电感电容(LC)振荡器
    • US08717112B2
    • 2014-05-06
    • US13338268
    • 2011-12-28
    • Hong-Yeh ChangYuan-Ta ChiuChia-Hung ChangChun-Jen Chen
    • Hong-Yeh ChangYuan-Ta ChiuChia-Hung ChangChun-Jen Chen
    • H03B1/00
    • H03B5/1212H03B5/1228H03B5/1243H03B27/00
    • An inductance-capacitance (LC) oscillator including a first varactor cell, a first transistor, a second transistor and a first pair of differential transformers is provided. The first varactor cell provides a first variable capacitance to adjust/tune the frequency of a first differential oscillation signal generated by the LC oscillator, and outputting the first differential oscillation signal. The first transistor is coupled between a core dc supply voltage and a first terminal of the first varactor cell. The second transistor is coupled between a ground potential and a second terminal of the first varactor cell. The first pair of differential transformers is connected in cascade with the first transistor and the second transistor between the core dc supply voltage and the ground potential, and is used for increasing the output-swing of the first differential oscillation signal, and making a current flowing through the first transistor to be reused by the second transistor.
    • 提供包括第一变容二极管单元,第一晶体管,第二晶体管和第一对差动变压器的电感 - 电容(LC)振荡器。 第一变容二极管单元提供第一可变电容以调整/调谐由LC振荡器产生的第一差分振荡信号的频率,并输出第一差分振荡信号。 第一晶体管耦合在核心直流电源电压和第一变容二极管单元的第一端子之间。 第二晶体管耦合在第一变容二极管单元的地电位和第二端之间。 第一对差动变压器与核心直流电源电压和地电位之间的第一晶体管和第二晶体管级联连接,并用于增加第一差分振荡信号的输出摆幅,并使电流流动 通过第一晶体管被第二晶体管重新使用。
    • 5. 发明授权
    • Timing calibration circuit for time-interleaved analog-to-digital converter and associated method
    • 时间交错模数转换器的定时校准电路及相关方法
    • US08604954B2
    • 2013-12-10
    • US13596744
    • 2012-08-28
    • Chun-Jen ChenTsung-Heng TsaiTzu-Yi Tang
    • Chun-Jen ChenTsung-Heng TsaiTzu-Yi Tang
    • H03M1/10
    • H03M1/1009H03M1/1215
    • A timing calibration circuit for a time-interleaved analog-to-digital converter (ADC) is provided. The timing calibration circuit includes a correlation unit, an adaptive filter and a delay cell. The correlation unit generates a first correlation coefficient according to a first zero-crossing possibility distribution between a first digital data and a second digital data, and generates a second correlation coefficient according to a second zero-crossing possibility distribution between the second digital data and a third digital data. The adaptive filter generates a predicted time skew according to a difference between the first correlation coefficient and the second correlation coefficient. The delay cell calibrates a clock signal of the ADC according to the predicted time skew.
    • 提供了一种用于时间交织的模数转换器(ADC)的定时校准电路。 定时校准电路包括相关单元,自适应滤波器和延迟单元。 相关单元根据第一数字数据和第二数字数据之间的第一过零可能性分布产生第一相关系数,并且根据第二数字数据和第二数字数据之间的第二过零可能性分布产生第二相关系数 第三个数字数据。 自适应滤波器根据第一相关系数和第二相关系数之间的差产生预测的时间偏差。 延迟单元根据预测的时间偏差校准ADC的时钟信号。
    • 6. 发明授权
    • Current balance circuit to keep dynamic balance between currents in power passages of power connector
    • 电流平衡电路,用于在电源连接器的电源通道中保持电流之间的动态平衡
    • US08536852B2
    • 2013-09-17
    • US12730225
    • 2010-03-23
    • Tsung-Sheng HuangChun-Jen ChenDuen-Yi Ho
    • Tsung-Sheng HuangChun-Jen ChenDuen-Yi Ho
    • G05F3/30
    • G06F1/26Y10T307/414Y10T307/549
    • A current balance circuit includes a first and a second current sensors, an averager, a first and a second control modules, and a first and a second rheostat elements. The first and second current sensors receive a first current and a second current from a power source respectively and convert the first and second currents into a first and a second voltages. The averager receives the first and second voltages and calculates to obtain an average voltage. The first and second control modules receive the first voltage, the second voltage, and the average voltage, to obtain a first and a second control signals, to control current conduction ability of the first and second rheostat elements, to make the first and second currents keep a dynamic balance.
    • 电流平衡电路包括第一和第二电流传感器,平均器,第一和第二控制模块以及第一和第二变阻器元件。 第一和第二电流传感器分别接收来自电源的第一电流和第二电流,并将第一和第二电流转换成第一和第二电压。 平均器接收第一和第二电压并计算得到平均电压。 第一和第二控制模块接收第一电压,第二电压和平均电压,以获得第一和第二控制信号,以控制第一和第二变阻器元件的电流传导能力,以使第一和第二电流 保持动态平衡。
    • 8. 发明申请
    • INJECTION-LOCKED FREQUENCY DIVIDER
    • 注射锁频分路器
    • US20130093475A1
    • 2013-04-18
    • US13339361
    • 2011-12-28
    • Hong-Yeh ChangYen-Liang YehChia-Hung ChangChun-Jen Chen
    • Hong-Yeh ChangYen-Liang YehChia-Hung ChangChun-Jen Chen
    • H03B19/12
    • H03B19/14H03B2200/0074
    • An injection-locked frequency divider (ILFD) including a signal injector, an oscillator (OSC), and a buffer stage is provided. The signal injector is configured for receiving an injection signal. The OSC is configured for dividing the frequency of the injection signal, so as to generate a first divided frequency signal, where there is an integral-multiple relation between the frequency of the first divided frequency signal and that of the injection signal. The buffer stage is configured for receiving and boosting the first divided frequency signal, and performing a push-push process on the first divided frequency signal, so as to output a second divided frequency signal, where there is a fractional-multiple relation between the frequency of the second divided frequency signal and that of the injection signal.
    • 提供了包括信号注入器,振荡器(OSC)和缓冲器级的注入锁定分频器(ILFD)。 信号注射器被配置为接收注入信号。 OSC被配置为用于分割喷射信号的频率,以便产生第一分频信号,其中在第一分频信号的频率与喷射信号的频率之间存在整数倍关系。 缓冲级被配置为接收和升压第一分频信号,并且对第一分频信号执行推推处理,以便输出第二分频信号,其中频率之间存在小数倍关系 的第二分频信号和注入信号的信号。
    • 9. 发明申请
    • INDUCTANCE-CAPACITANCE (LC) OSCILLATOR
    • 电感电容(LC)振荡器
    • US20130009715A1
    • 2013-01-10
    • US13338268
    • 2011-12-28
    • Hong-Yeh ChangYuan-Ta ChiuChia-Hung ChangChun-Jen Chen
    • Hong-Yeh ChangYuan-Ta ChiuChia-Hung ChangChun-Jen Chen
    • H03B5/12
    • H03B5/1212H03B5/1228H03B5/1243H03B27/00
    • An inductance-capacitance (LC) oscillator including a first varactor cell, a first transistor, a second transistor and a first pair of differential transformers is provided. The first varactor cell provides a first variable capacitance to adjust/tune the frequency of a first differential oscillation signal generated by the LC oscillator, and outputting the first differential oscillation signal. The first transistor is coupled between a core dc supply voltage and a first terminal of the first varactor cell. The second transistor is coupled between a ground potential and a second terminal of the first varactor cell. The first pair of differential transformers is connected in cascade with the first transistor and the second transistor between the core dc supply voltage and the ground potential, and is used for increasing the output-swing of the first differential oscillation signal, and making a current flowing through the first transistor to be reused by the second transistor.
    • 提供包括第一变容二极管单元,第一晶体管,第二晶体管和第一对差动变压器的电感 - 电容(LC)振荡器。 第一变容二极管单元提供第一可变电容以调整/调谐由LC振荡器产生的第一差分振荡信号的频率,并输出第一差分振荡信号。 第一晶体管耦合在核心直流电源电压和第一变容二极管单元的第一端子之间。 第二晶体管耦合在第一变容二极管单元的地电位和第二端之间。 第一对差动变压器与核心直流电源电压和地电位之间的第一晶体管和第二晶体管级联连接,并用于增加第一差分振荡信号的输出摆幅,并使电流流动 通过第一晶体管被第二晶体管重新使用。