公开(公告)号：US08102953B2

公开(公告)日：2012-01-24

申请号：US11618721

申请日：2006-12-29

申请人： Razieh Roufoogaran ,  Arya Behzad ,  Qiang Li

发明人： Razieh Roufoogaran ,  Arya Behzad ,  Qiang Li

IPC分类号： H04L27/08 ,  H04B1/18

CPC分类号： H04B1/0082 ,  H03G1/0035 ,  H03G3/30

摘要： A method and system for calibrating a plurality of modules in a communication system is provided. The method may include selecting a plurality of modules with at least one output signal and calibrating an amplitude of each selected module to be within a specified range if the amplitude is out of the specified range via a gain control processing circuit of the selected module, wherein the plurality of modules may be calibrated in an order starting with a first module located at an input of a signal path and ending with a module located at an output of the signal path. The DC component and amplitude of the envelope of the output signal may be detected by circuitry within the selected module. Muxes may be utilized to route the DC component and amplitude of the envelope to a feedback control processing circuit.

摘要翻译： 提供了一种用于在通信系统中校准多个模块的方法和系统。 该方法可以包括：通过所选择的模块的增益控制处理电路，如果振幅超出指定范围，则选择具有至少一个输出信号的多个模块，并将每个所选模块的振幅校准在指定范围内，其中 多个模块可以以从位于信号路径的输入端的第一模块开始并以位于信号路径的输出端的模块结束的顺序被校准。 输出信号的包络的直流分量和振幅可由所选模块内的电路检测。 可以利用复用器将DC分量和信号的幅度路由到反馈控制处理电路。

公开(公告)号：US20120007215A1

公开(公告)日：2012-01-12

申请号：US13236536

申请日：2011-09-19

申请人： Hooman Darabi ,  Qiang Li ,  Bo Zhang

发明人： Hooman Darabi ,  Qiang Li ,  Bo Zhang

IPC分类号： H01L27/06

CPC分类号： H01L28/40 ,  H01L23/5223 ,  H01L27/0805 ,  H01L28/87 ,  H01L28/91 ,  H01L29/93 ,  H01L29/94 ,  H01L2924/0002 ,  H01L2924/00

摘要： At least a first capacitor is formed on a substrate and connected to a first differential node of a differential circuit, and the first capacitor may be variable in capacitance. A second capacitor is formed on the substrate and connected to a second differential node of the differential circuit, and the second capacitor also may be variable. A third capacitor is connected between the first differential node and the second differential node, and is formed at least partially above the first capacitor. In this way, a size of the first capacitor and/or the second capacitor may be reduced on the substrate, and capacitances of the first and/or second capacitor(s) may be adjusted in response to a variable characteristic of one or more circuit components of the differential circuit.

摘要翻译： 至少第一电容器形成在衬底上并连接到差分电路的第一差分节点，并且第一电容器可以是可变电容的。 第二电容器形成在衬底上并连接到差分电路的第二差分节点，并且第二电容器也可以是可变的。 第三电容器连接在第一差分节点和第二差分节点之间，并且至少部分地形成在第一电容器的上方。 以这种方式，可以在衬底上减小第一电容器和/或第二电容器的尺寸，并且可以响应于一个或多个电路的可变特性来调整第一和/或第二电容器的电容 差分电路的组件。

公开(公告)号：US20110018604A1

公开(公告)日：2011-01-27

申请号：US12539495

申请日：2009-08-11

申请人： Yuyu Chang ,  Qiang Li ,  John Leete ,  Hooman Darabi ,  Yiannis Kokolakis

发明人： Yuyu Chang ,  Qiang Li ,  John Leete ,  Hooman Darabi ,  Yiannis Kokolakis

IPC分类号： H03L5/00

CPC分类号： H03L1/00 ,  H03B5/368

摘要： A method to provide a low-power clock signal or a low-noise clock signal is described herein. It is determined whether a low-power mode or a low-noise mode is in use. A voltage reference input of a low-dropout voltage regulator (LDO) is switched to a low-power voltage reference for low-power mode and to a low-noise voltage reference for low-noise mode. The LDO provides a constant voltage output to a crystal oscillator. A clock signal is generated using the crystal oscillator. The clock signal is limited using a low-power limiter to generate a low-power output clock signal and/or is limited using a low-noise limiter to generate a low-noise clock signal. The low-power output clock signal or the low-noise output clock signal is selected using a mux.

摘要翻译： 本文描述了提供低功率时钟信号或低噪声时钟信号的方法。 确定是否使用低功率模式或低噪声模式。 低压差稳压器（LDO）的参考电压输入端被切换到低功耗模式的低功耗参考电压，低噪声模式的低噪声电压基准用。 LDO为晶体振荡器提供恒定电压输出。 使用晶体振荡器产生时钟信号。 使用低功率限幅器来限制时钟信号以产生低功率输出时钟信号和/或使用低噪声限制器来限制以产生低噪声时钟信号。 使用多路复用器选择低功耗输出时钟信号或低噪声输出时钟信号。

公开(公告)号：US07831564B1

公开(公告)日：2010-11-09

申请号：US10737281

申请日：2003-12-16

申请人： Gaohong Wei ,  HanCheng Hsiung ,  Qiang Li

发明人： Gaohong Wei ,  HanCheng Hsiung ,  Qiang Li

IPC分类号： G06F7/00 ,  G06F17/00

CPC分类号： G06F11/1458 ,  G06F11/1469

摘要： A method and system of generating a point-in-time image of at least a portion of a database is disclosed. According to one embodiment, a method is provided wherein a plurality of components of a database are discovered, a component of the plurality of components is selected, a data management resource of a plurality of data management resources is selected using an attribute of the component, and a point-in-time image of the component is generated using the data management resource.

摘要翻译： 公开了一种生成数据库的至少一部分的时间点图像的方法和系统。 根据一个实施例，提供了一种方法，其中发现数据库的多个组件，选择多个组件的组件，使用组件的属性来选择多个数据管理资源的数据管理资源， 并且使用数据管理资源生成组件的时间点图像。

公开(公告)号：US07817748B2

公开(公告)日：2010-10-19

申请号：US11761389

申请日：2007-06-12

申请人： Jing Zhu ,  Qiang Li ,  Qinghua Li

发明人： Jing Zhu ,  Qiang Li ,  Qinghua Li

IPC分类号： H03K9/00

CPC分类号： H04L27/2656 ,  H04B7/0417 ,  H04B7/0854

摘要： An adaptive receiver algorithm is disclosed, for use in multiple-input-multiple-output orthogonal frequency division multiplexing systems. The adaptive receiver algorithm selectively chooses either the maximum ratio combining technique or the minimum mean square error technique, for optimum receiver performance, depending on the characteristics of the wireless environment.

摘要翻译： 公开了一种用于多输入多输出正交频分复用系统的自适应接收机算法。 根据无线环境的特点，自适应接收机算法有选择地选择最大比组合技术或最小均方误差技术，以获得最佳的接收机性能。

公开(公告)号：US07777579B2

公开(公告)日：2010-08-17

申请号：US11647884

申请日：2006-12-29

申请人： Qiang Li

发明人： Qiang Li

IPC分类号： H03B19/00 ,  H03B21/00

CPC分类号： H03B21/025

摘要： According to one exemplary embodiment, a local oscillation generator includes a mixing stage for receiving a primary frequency and one of a number of related frequencies. The local oscillation generator further includes a first transconductance stage to provide a first related frequency to the mixing stage when a first switch selectably enables a first power path in the first transconductance stage. The local oscillation generator further includes a second transconductance stage to provide a second related frequency to the mixing stage when a second switch selectably enables a second power path in the second transconductance stage. The local oscillation generator further includes a number of dividers, where an output of a first divider provides the first related frequency to an input of the first transconductance stage, and where an output of a second divider provides the second related frequency to an input of the second transconductance stage.

摘要翻译： 根据一个示例性实施例，本地振荡发生器包括用于接收主频率和多个相关频率中的一个的混频级。 本地振荡发生器还包括第一跨导级，用于当第一开关可选地启用第一跨导级中的第一功率路径时，向混合级提供第一相关频率。 本地振荡发生器还包括第二跨导级，以在第二开关可选地启用第二跨导级中的第二功率路径时，向混合级提供第二相关频率。 本地振荡发生器还包括多个分频器，其中第一分频器的输出将第一相关频率提供给第一跨导级的输入，并且其中第二分频器的输出将第二相关频率提供给第一相位频率的输入 第二跨导级。

公开(公告)号：US20100026411A1

公开(公告)日：2010-02-04

申请号：US12183755

申请日：2008-07-31

申请人： LIANJUN LIU ,  Jonathan K. Abrokwah ,  Olin L. Hartin ,  Qiang Li

发明人： LIANJUN LIU ,  Jonathan K. Abrokwah ,  Olin L. Hartin ,  Qiang Li

IPC分类号： H03H7/42

CPC分类号： H03H7/42 ,  H01F19/08 ,  H01F2017/0046 ,  H03H7/1758 ,  H03H7/1766 ,  H03H7/1775

摘要： A balanced-unbalanced (balun) signal transformer includes an unbalanced port, a balanced port coupled to the unbalanced port, the balanced port comprising a first terminal and a second terminal, a first capacitor coupled to the first terminal, a first inductor coupled to ground and the first capacitor, a second capacitor coupled to the second terminal, and a second inductor coupled to ground and the second capacitor. The transformer may also include a third capacitor coupled to a terminal of the unbalanced port; and a third inductor coupled to the third capacitor and the third terminal.

摘要翻译： 平衡不平衡（balun）信号变压器包括不平衡端口，耦合到不平衡端口的平衡端口，平衡端口包括第一端子和第二端子，耦合到第一端子的第一电容器，耦合到地的第一电感器 并且第一电容器，耦合到第二端子的第二电容器和耦合到地的第二电感器和第二电容器。 变压器还可以包括耦合到不平衡端口的端子的第三电容器; 以及耦合到所述第三电容器和所述第三端子的第三电感器。

公开(公告)号：US07634027B2

公开(公告)日：2009-12-15

申请号：US11618719

申请日：2006-12-29

申请人： Arya Behzad ,  Qiang Li ,  Razieh Roufoogaran

发明人： Arya Behzad ,  Qiang Li ,  Razieh Roufoogaran

IPC分类号： H04L25/06

CPC分类号： H04L27/364 ,  H04L27/362

摘要： Certain aspects of a method and system for independent in-phase (I) and quadrature (Q) loop amplitude control for quadrature generators may include determining an amplitude voltage associated with an in-phase (I) component and a quadrature (Q) component of a generated signal. A DC reference voltage associated with the I component and the Q component may be determined. The determined amplitude voltage may be compared with the determined reference voltage to generate a control signal. The amplitude mismatch between the I component and the Q component may be compensated by controlling a biasing current of one or more programmable buffers associated with one or both of the I component and the Q component, based on the generated control signal.

摘要翻译： 用于正交发生器的独立同相（I）和正交（Q）环路幅度控制的方法和系统的某些方面可以包括确定与同相（I）分量和正交（Q）分量的正交（Q）分量相关联的幅度电压 产生的信号。 可以确定与I分量和Q分量相关联的DC参考电压。 可以将确定的振幅电压与所确定的参考电压进行比较以产生控制信号。 可以通过基于所生成的控制信号控制与I分量和Q分量中的一个或两个相关联的一个或多个可编程缓冲器的偏置电流来补偿I分量和Q分量之间的幅度失配。

公开(公告)号：US20090195324A1

公开(公告)日：2009-08-06

申请号：US12025315

申请日：2008-02-04

申请人： Qiang Li ,  Jonathan K. Abrokwah ,  Olin L. Hartin ,  Lianjun Liu

发明人： Qiang Li ,  Jonathan K. Abrokwah ,  Olin L. Hartin ,  Lianjun Liu

IPC分类号： H03H5/00 ,  H01F7/06

CPC分类号： H01F19/04 ,  H03H7/1775 ,  H03H7/42 ,  H03H2001/0064 ,  Y10T29/4902

摘要： An electronic assembly includes a substrate (66), a balun transformer (42) formed on the substrate (66) and including a first winding (50) and a second winding (52), each having respective first and second ends, and a reaction circuit component (48) formed on the substrate (66) and electrically coupled to the second winding (52) between the first and second ends thereof. The balun transformer (42) and the reaction circuit component (48) jointly form a harmonically suppressed balun transformer having a fundamental frequency, and the reaction circuit component (48) is tuned such that the harmonically suppressed balun transformer resonates at a selected harmonic of the fundamental frequency.

摘要翻译： 电子组件包括衬底（66），形成在衬底（66）上并包括第一绕组（50）和第二绕组（52）的平衡不平衡变压器（42），每个具有相应的第一和第二端，以及反应 电路部件（48），形成在所述基板（66）上并且在所述第一和第二端之间电连接到所述第二绕组（52）。 平衡 - 不平衡变压器（42）和反应电路部件（48）共同形成具有基频的谐波抑制平衡不平衡变压器，并且调谐反应电路部件（48），使得谐波抑制的平衡不平衡变压器以所选择的谐波谐振 基频

公开(公告)号：US07483433B2

公开(公告)日：2009-01-27

申请号：US09954362

申请日：2001-09-17

申请人： Steve M. Simmons ,  Jim Kleiner ,  Qiang Li ,  Bing Liu ,  Lance Arnold Visser

发明人： Steve M. Simmons ,  Jim Kleiner ,  Qiang Li ,  Bing Liu ,  Lance Arnold Visser

IPC分类号： H04L12/28

CPC分类号： H04L47/15 ,  H04L1/1614 ,  H04L12/1868 ,  H04L45/02 ,  H04L45/021 ,  H04L45/42 ,  H04L47/12 ,  H04L47/22

摘要： Employing an asymmetric protocol, multiple sources reliably broadcast dynamically changing routing tables incrementally across multiple consumers from a single distributor. Each of multiple sources sends current tables to the distributor using a snapshot mechanism. Messages are buffered, segmented, paced by timers, and broadcast to the consumers repetitively at the distributor. Negative acknowledgments from the consumer request missing messages from the distributor after receipt of a keepalive message from the distributor. The distributor marks the missing messages and retransmits replacements from a history buffer only after firing of a resend timer. A unique Session ID included in all messages originating from each particular source facilitates reliable table distribution from multiple sources to multiple consumers via a single distributor.

摘要翻译： 采用非对称协议，多个源可以从单个分发者可靠地广泛地跨多个消费者广播动态变化的路由表。 每个多个源使用快照机制将当前表发送给分发者。 消息被缓冲，分段，由定时器起搏，并在分销商处重复地向消费者广播。 来自消费者的否定确认从收到来自经销商的保持性消息的消息中请求丢失来自经销商的消息。 分配器标记丢失的消息，并且仅在触发重新发送定时器之后从历史缓冲区重新发送替换。 来自每个特定源的所有消息中包含的唯一会话ID便于通过单个分发者将多个源到多个消费者的可靠表格分发。