Inductance-capacitance (LC) oscillator
    33.
    发明授权
    Inductance-capacitance (LC) oscillator 有权
    电感电容(LC)振荡器

    公开(公告)号:US08717112B2

    公开(公告)日:2014-05-06

    申请号:US13338268

    申请日:2011-12-28

    CPC classification number: H03B5/1212 H03B5/1228 H03B5/1243 H03B27/00

    Abstract: 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.

    Abstract translation: 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。

    Timing calibration circuit for time-interleaved analog-to-digital converter and associated method
    34.
    发明授权
    Timing calibration circuit for time-interleaved analog-to-digital converter and associated method 有权
    时间交错模数转换器的定时校准电路及相关方法

    公开(公告)号:US08604954B2

    公开(公告)日:2013-12-10

    申请号:US13596744

    申请日:2012-08-28

    CPC classification number: H03M1/1009 H03M1/1215

    Abstract: 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.

    Abstract translation: 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。

    Current balance circuit to keep dynamic balance between currents in power passages of power connector
    35.
    发明授权
    Current balance circuit to keep dynamic balance between currents in power passages of power connector 失效
    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

    公开(公告)号:US08536852B2

    公开(公告)日:2013-09-17

    申请号:US12730225

    申请日:2010-03-23

    CPC classification number: G06F1/26 Y10T307/414 Y10T307/549

    Abstract: 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.

    Abstract translation: 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。

    INJECTION-LOCKED FREQUENCY DIVIDER
    36.
    发明申请
    INJECTION-LOCKED FREQUENCY DIVIDER 有权
    注射锁频分路器

    公开(公告)号:US20130093475A1

    公开(公告)日:2013-04-18

    申请号:US13339361

    申请日:2011-12-28

    CPC classification number: H03B19/14 H03B2200/0074

    Abstract: 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.

    Abstract translation: 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。

    INDUCTANCE-CAPACITANCE (LC) OSCILLATOR
    37.
    发明申请
    INDUCTANCE-CAPACITANCE (LC) OSCILLATOR 有权
    电感电容(LC)振荡器

    公开(公告)号:US20130009715A1

    公开(公告)日:2013-01-10

    申请号:US13338268

    申请日:2011-12-28

    CPC classification number: H03B5/1212 H03B5/1228 H03B5/1243 H03B27/00

    Abstract: 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.

    Abstract translation: 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。

    System and method for inspecting layout of a printed circuit board
    38.
    发明授权
    System and method for inspecting layout of a printed circuit board 失效
    用于检查印刷电路板布局的系统和方法

    公开(公告)号:US08239815B2

    公开(公告)日:2012-08-07

    申请号:US12701677

    申请日:2010-02-08

    CPC classification number: G06F17/5081

    Abstract: A system and method for inspecting layout of a printed circuit board (PCB) provides a graphical user interface (GUI). The GUI displays a layout of the PCB. High side pins of a pulse width modulation (PWM) controller and a component connected to a high side pin are found. If the component is a metallic oxide semiconductor field effect transistor (MOSFET), the system calculate absolute a linear distance and a trace distance between a source pin of the MOSFET and a capacitor pin of a coupling capacitor connected to the source pin. If the linear distance, the trace distance and a capacitance of the coupling capacitor accord with a layout standard, the layout of the PCB is determined to be up to standard.

    Abstract translation: 用于检查印刷电路板(PCB)的布局的系统和方法提供图形用户界面(GUI)。 GUI显示PCB的布局。 发现脉冲宽度调制(PWM)控制器的高端引脚和连接到高端引脚的元件。 如果组件是金属氧化物半导体场效应晶体管(MOSFET),则系统计算绝缘线性距离和MOSFET的源极引脚与连接到源极引脚的耦合电容的电容引脚之间的走线距离。 如果线性距离,迹线距离和耦合电容的电容符合布局标准,则PCB的布局被确定为达到标准。

    Printed circuit board
    39.
    发明授权
    Printed circuit board 失效
    印刷电路板

    公开(公告)号:US08199522B2

    公开(公告)日:2012-06-12

    申请号:US12497709

    申请日:2009-07-06

    Abstract: A printed circuit board includes a first signal layer, a first reference layer, a second reference layer, and a second signal layer. An integrated circuit mounted on the first signal layer includes a power supply terminal connected to a first power supply via. The second signal layer includes a filter and a power supply wire. The filter includes a power terminal connected to the first power supply via, and a ground terminal connected to the second reference layer. The first power supply via is connected to the first reference layer through the power supply wire and a second power supply via. A void defined in the second reference layer is at least partially vertically overlapping with the power supply wire, and enables the first reference layer to function as a reference plane for the power supply wire, to increase impedance of the power supply wire.

    Abstract translation: 印刷电路板包括第一信号层,第一参考层,第二参考层和第二信号层。 安装在第一信号层上的集成电路包括连接到第一电源通路的电源端子。 第二信号层包括滤波器和电源线。 滤波器包括连接到第一电源通孔的电源端子和连接到第二参考层的接地端子。 第一电源通孔通过电源线和第二电源通孔连接到第一参考层。 限定在第二参考层中的空隙至少部分地与电源线垂直重叠,并且使得第一参考层能够用作电源线的参考平面,以增加电源线的阻抗。

    System and method for evaluating performance of a MIMO antenna system
    40.
    发明授权
    System and method for evaluating performance of a MIMO antenna system 失效
    用于评估MIMO天线系统性能的系统和方法

    公开(公告)号:US08068553B2

    公开(公告)日:2011-11-29

    申请号:US12633895

    申请日:2009-12-09

    Abstract: A performance evaluation system for a multiple-input multiple-output (MIMO) antenna system receives simulation parameters from an input device, and simulates a MIMO antenna system accordingly. A method, also provided, further evaluates performance of the simulated MIMO antenna system when a series of radio frequency (RF) signals are transmitted through the MIMO antenna system, and displays a performance analysis result of the MIMO antenna system on a display device for evaluation of the performance of the simulated MIMO antenna system.

    Abstract translation: 用于多输入多输出(MIMO)天线系统的性能评估系统从输入设备接收模拟参数,并相应地模拟MIMO天线系统。 还提供了一种方法,当通过MIMO天线系统传输一系列射频(RF)信号时,进一步评估模拟MIMO天线系统的性能,并且在用于评估的显示装置上显示MIMO天线系统的性能分析结果 的模拟MIMO天线系统的性能。

Patent Agency Ranking