公开(公告)号：US08130020B2

公开(公告)日：2012-03-06

申请号：US12120207

申请日：2008-05-13

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： G06F7/64 ,  G06G7/18 ,  G06G7/19

CPC分类号： H03H19/004

摘要： A switched-capacitor decimator that can attenuate undesired signal components at odd harmonics of an output sample rate is described. In one design, the switched-capacitor decimator includes at least one sampling capacitor and multiple switches. For each sampling capacitor, the top plate is charged with a first input signal when the capacitor is selected for top charging, and the bottom plate is charged with a second input signal when the capacitor is selected for bottom charging. For each sampling capacitor, the top plate provides its stored charges to a first output signal and the bottom plate provides its stored charges to a second output signal when the capacitor is selected for reading. The switches couple the at least one sampling capacitor to the first and second input signals for charging and to the first and second output signals for reading.

摘要翻译： 描述了可以衰减输出采样率的奇次谐波处的不需要的信号分量的开关电容抽取器。 在一种设计中，开关电容抽取器包括至少一个采样电容器和多个开关。 对于每个采样电容器，当选择电容器进行顶部充电时，顶板充电第一输入信号，并且当选择电容器进行底部充电时，底板充电第二个输入信号。 对于每个采样电容器，顶板将其存储的电荷提供给第一输出信号，并且当电容器被选择用于读取时，底板将其存储的电荷提供给第二输出信号。 开关将至少一个采样电容器耦合到用于充电的第一和第二输入信号以及用于读取的第一和第二输出信号。

公开(公告)号：US20090237161A1

公开(公告)日：2009-09-24

申请号：US12053249

申请日：2008-03-21

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： H03F3/45

CPC分类号： H03F3/45242

摘要： A device for providing low noise transconductance amplification is presented. The device includes a PMOS transconductance section configured to receive a differential RF input signal, a PMOS cascode section coupled to the PMOS transconductance section, an NMOS transconductance section configured to receive the RF differential input signal, and an NMOS cascode section coupled to the NMOS transconductance section, where the PMOS and NMOS cascode sections provide a differential quadrature output signal and a differential in-phase output signal. A method for amplifying an RF signal is also presented. The method includes receiving a differential RF input signal, converting the differential RF input signal into current signals, buffering the current signals to provide a differential quadrature output signal and a differential in-phase output signal.

摘要翻译： 提出了一种用于提供低噪声跨导放大的器件。 该器件包括被配置为接收差分RF输入信号的PMOS跨导部分，耦合到PMOS跨导部分的PMOS共源共栅部分，被配置为接收RF差分输入信号的NMOS跨导部分，以及耦合到NMOS跨导 其中PMOS和NMOS共源共栅部分提供差分正交输出信号和差分同相输出信号。 还提出了放大RF信号的方法。 该方法包括接收差分RF输入信号，将差分RF输入信号转换为电流信号，缓冲电流信号以提供差分正交输出信号和差分同相输出信号。

公开(公告)号：US08902002B2

公开(公告)日：2014-12-02

申请号：US13483166

申请日：2012-05-30

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： H03G3/20

CPC分类号： H03F1/0222 ,  H03F1/0266 ,  H03F1/30 ,  H03F3/45479 ,  H03F2200/102 ,  H03F2203/45112

摘要： There is provided a bias arrangement for an amplifier adapted to amplify a varying input signal, the arrangement comprising a control circuit arranged to adaptively vary a bias current to the amplifier in dependence on an envelope of the varying input signal.

摘要翻译： 提供了用于放大适应于变化的输入信号的放大器的偏置装置，该装置包括控制电路，该控制电路被布置成根据变化输入信号的包络自适应地改变放大器的偏置电流。

公开(公告)号：US08854139B2

公开(公告)日：2014-10-07

申请号：US13483161

申请日：2012-05-30

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： H03F3/04

CPC分类号： H03F1/025 ,  H03F3/193 ,  H03F2200/102 ,  H03F2200/511

摘要： There is described an amplification stage comprising: a current mirror circuit comprising a reference transistor arranged to receive a current associated with an input signal and an output transistor providing a current source for an output signal line; a current sink to the output signal line, under the control of the input signal; circuitry arranged to maintain equality between the drain/collector voltages on the transistors of the current mirror circuit.

摘要翻译： 描述了一种放大级，包括：电流镜电路，包括被配置为接收与输入信号相关的电流的参考晶体管和提供输出信号线的电流源的输出晶体管; 在输入信号线的控制下，电流接收到输出信号线; 布置成保持电流镜电路的晶体管上的漏极/集电极之间的相等的电路。

公开(公告)号：US07656230B2

公开(公告)日：2010-02-02

申请号：US12053249

申请日：2008-03-21

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： H03F3/45

CPC分类号： H03F3/45242

摘要： A device for providing low noise transconductance amplification is presented. The device includes a PMOS transconductance section configured to receive a differential RF input signal, a PMOS cascode section coupled to the PMOS transconductance section, an NMOS transconductance section configured to receive the RF differential input signal, and an NMOS cascode section coupled to the NMOS transconductance section, where the PMOS and NMOS cascode sections provide a differential quadrature output signal and a differential in-phase output signal. A method for amplifying an RF signal is also presented. The method includes receiving a differential RF input signal, converting the differential RF input signal into current signals, buffering the current signals to provide a differential quadrature output signal and a differential in-phase output signal.

摘要翻译： 提出了一种用于提供低噪声跨导放大的器件。 该器件包括被配置为接收差分RF输入信号的PMOS跨导部分，耦合到PMOS跨导部分的PMOS共源共栅部分，被配置为接收RF差分输入信号的NMOS跨导部分，以及耦合到NMOS跨导 其中PMOS和NMOS共源共栅部分提供差分正交输出信号和差分同相输出信号。 还提出了放大RF信号的方法。 该方法包括接收差分RF输入信号，将差分RF输入信号转换为电流信号，缓冲电流信号以提供差分正交输出信号和差分同相输出信号。

公开(公告)号：US20130321085A1

公开(公告)日：2013-12-05

申请号：US13483166

申请日：2012-05-30

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： H03F3/04

CPC分类号： H03F1/0222 ,  H03F1/0266 ,  H03F1/30 ,  H03F3/45479 ,  H03F2200/102 ,  H03F2203/45112

摘要： There is provided a bias arrangement for an amplifier adapted to amplify a varying input signal, the arrangement comprising a control circuit arranged to adaptively vary a bias current to the amplifier in dependence on an envelope of the varying input signal.

公开(公告)号：US20130321081A1

公开(公告)日：2013-12-05

申请号：US13483161

申请日：2012-05-30

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： H03F3/45

CPC分类号： H03F1/025 ,  H03F3/193 ,  H03F2200/102 ,  H03F2200/511

摘要： There is described an amplification stage comprising: a current mirror circuit comprising a reference transistor arranged to receive a current associated with an input signal and an output transistor providing a current source for an output signal line; a current sink to the output signal line, under the control of the input signal; circuitry arranged to maintain equality between the drain/collector voltages on the transistors of the current mirror circuit.

摘要翻译： 描述了一种放大级，包括：电流镜电路，包括被配置为接收与输入信号相关的电流的参考晶体管和提供输出信号线的电流源的输出晶体管; 在输入信号线的控制下，电流接收到输出信号线; 布置成保持电流镜电路的晶体管上的漏极/集电极之间的相等的电路。

公开(公告)号：US20070279135A1

公开(公告)日：2007-12-06

申请号：US11444076

申请日：2006-05-31

申请人： Christopher Hull ,  Russell Fagg ,  Dandan Li

发明人： Christopher Hull ,  Russell Fagg ,  Dandan Li

IPC分类号： H03L7/085 ,  H03L7/089

CPC分类号： H03L7/0898 ,  H03L7/081 ,  H03L7/18

摘要： A novel circuit for obtaining the bandwidth of a phase-locked loop circuit is disclosed. The circuit adjusts a phase of a signal (reference or generated), causing the phase-locked loop circuit to adjust the frequency of its voltage-controlled oscillator as it recovers a phase lock. The circuit times the duration of the recovery stage, from which the loop bandwidth may be obtained. Adjustments to the programmable portions of the phase-locked loop may then be made in accordance with design specifications.

摘要翻译： 公开了一种用于获得锁相环电路带宽的新型电路。 电路调整信号的相位（参考或产生），使得锁相环电路在恢复锁相时调节其压控振荡器的频率。 电路乘以恢复阶段的持续时间，从中可获得环路带宽。 然后可以根据设计规范对锁相环的可编程部分进行调整。

公开(公告)号：US20100225419A1

公开(公告)日：2010-09-09

申请号：US12400711

申请日：2009-03-09

申请人： Chengzhi Pan ,  Joseph Burke ,  Russell Fagg

发明人： Chengzhi Pan ,  Joseph Burke ,  Russell Fagg

IPC分类号： H03H7/00

CPC分类号： H03H15/02 ,  H03H19/004

摘要： A passive switched-capacitor (PSC) filter includes (i) an array of capacitors that can store and share electrical charge and (ii) an array of switches that can couple the capacitors to a summing node. Each switch couples an associated capacitor to the summing node when enabled. Each capacitor stores a voltage value from the summing node when selected for charging and shares electrical charge with other capacitors via the summing node when selected for charge sharing. The PSC filter may include multiple sections for multiple filter taps. Each section includes one or more capacitors of equal size determined based on a corresponding filter coefficient. The capacitors in each section may be sequentially selected for charging with an input or output signal, one capacitor in each clock cycle. In each clock cycle, one capacitor in each section may be selected for charge sharing to generate the output signal.

摘要翻译： 无源开关电容器（PSC）滤波器包括（i）可以存储和共享电荷的电容器阵列，以及（ii）可将电容器耦合到求和节点的开关阵列。 启用时，每个开关将相关联的电容器耦合到求和节点。 当选择充电时，每个电容器存储来自求和节点的电压值，并且当选择用于电荷共享时，通过求和节点与其他电容器共用电荷。 PSC滤波器可以包括用于多个滤波器抽头的多个部分。 每个部分包括基于相应的滤波器系数确定的一个或多个相等大小的电容器。 可以依次选择每个部分中的电容器，以便在每个时钟周期中输入或输出信号，一个电容器进行充电。 在每个时钟周期中，可以选择每个部分中的一个电容器用于电荷共享以产生输出信号。

公开(公告)号：US20090284285A1

公开(公告)日：2009-11-19

申请号：US12120207

申请日：2008-05-13

申请人： Russell Fagg

发明人： Russell Fagg

IPC分类号： G11C27/02

CPC分类号： H03H19/004

摘要： A switched-capacitor decimator that can attenuate undesired signal components at odd harmonics of an output sample rate is described. In one design, the switched-capacitor decimator includes at least one sampling capacitor and multiple switches. For each sampling capacitor, the top plate is charged with a first input signal when the capacitor is selected for top charging, and the bottom plate is charged with a second input signal when the capacitor is selected for bottom charging. For each sampling capacitor, the top plate provides its stored charges to a first output signal and the bottom plate provides its stored charges to a second output signal when the capacitor is selected for reading. The switches couple the at least one sampling capacitor to the first and second input signals for charging and to the first and second output signals for reading.

摘要翻译： 描述了可以衰减输出采样率的奇次谐波处的不需要的信号分量的开关电容抽取器。 在一种设计中，开关电容抽取器包括至少一个采样电容器和多个开关。 对于每个采样电容器，当选择电容器进行顶部充电时，顶板充电第一输入信号，并且当选择电容器进行底部充电时，底板充电第二个输入信号。 对于每个采样电容器，顶板将其存储的电荷提供给第一输出信号，并且当电容器被选择用于读取时，底板将其存储的电荷提供给第二输出信号。 开关将至少一个采样电容器耦合到用于充电的第一和第二输入信号以及用于读取的第一和第二输出信号。