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    Voltage regulator with shunt feedback
    1.
    发明申请
    Voltage regulator with shunt feedback 有权
    具有并联反馈的稳压器

    公开(公告)号：US20070052396A1

    公开(公告)日：2007-03-08

    申请号：US11220958

    申请日：2005-09-07

    申请人： Donald Kerth ,  Russell Croman ,  Brian Green ,  Lysander Lim ,  James Maligeorgos ,  Xiachuan Guo ,  Augusto Marques

    发明人： Donald Kerth ,  Russell Croman ,  Brian Green ,  Lysander Lim ,  James Maligeorgos ,  Xiachuan Guo ,  Augusto Marques

    IPC分类号： G05F1/613

    CPC分类号： G05F1/613

    摘要： A voltage regulator configured to receive a supply voltage from a voltage supply and provide a regulated voltage to digital circuitry is provided. The voltage regulator comprises first circuitry configured to inhibit high frequency energy generated by the digital circuitry from transmitting into the voltage supply, second circuitry configured to inhibit low frequency energy generated by the digital circuitry from transmitting into the voltage supply, and third circuitry configured to maintain the regulated voltage at a substantially constant value in response to a current drawn by the digital circuitry.

    摘要翻译： 提供了一种电压调节器，其被配置为从电压源接收电源电压并向数字电路提供调节电压。 电压调节器包括被配置为禁止由数字电路产生的高频能量传送到电压源中的第一电路，被配置为禁止由数字电路产生的低频能量传输到电压源中的第二电路，以及被配置为维持 响应于由数字电路汲取的电流，调节电压处于基本恒定的值。

    PARTITIONING OF RADIO-FREQUENCY APPARATUS
    2.
    发明申请
    PARTITIONING OF RADIO-FREQUENCY APPARATUS 有权
    无线电频率设备的分配

    公开(公告)号：US20070054629A1

    公开(公告)日：2007-03-08

    申请号：US10730404

    申请日：2003-12-08

    申请人： James Maligeorgos ,  Augusto Marques ,  Lysander Lim ,  G. Tuttle ,  Aslamali Rafi ,  Tod Paulus ,  Gregory Uehara ,  Jeffrey Scott ,  Richard Behrens ,  Donald Kerth ,  G. Vishakhadatta ,  Vishnu Srinivasan ,  Caiyi Wang

    发明人： James Maligeorgos ,  Augusto Marques ,  Lysander Lim ,  G. Tuttle ,  Aslamali Rafi ,  Tod Paulus ,  Gregory Uehara ,  Jeffrey Scott ,  Richard Behrens ,  Donald Kerth ,  G. Vishakhadatta ,  Vishnu Srinivasan ,  Caiyi Wang

    IPC分类号： H04B1/38

    CPC分类号： H04B1/30 ,  H03J2200/10 ,  H04L27/0002

    摘要： Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry. Automatic frequency control (AFC) circuitry may be integrated with other components of RF circuitry and may generate frequency control signals for the frequency modification circuitry based on, for example, a signal received from a temperature sensor. Digital-to-analog converter (DAC) circuitry may be integrated with other components of RF circuitry to enable all-digital frequency control communications from baseband processor circuitry to RF circuitry.

    摘要翻译： 包括生成具有可变频率的参考信号的晶体振荡器电路的收发器电路和频率修改电路的射频（RF）设备的组件可以以各种方式被划分，例如作为一个或多个单独的集成电路。 频率修改电路可以被实现为包括数字控制的晶体振荡器（“DCXO”）电路和晶体的晶体振荡器电路的一部分。 频率修改电路可以包括至少一个可变电容器件，并且可以用于产生具有可调频率的参考信号。 可调参考信号可以被提供给RF装置的其他部件，和/或RF装置可以被配置为向基带处理器电路提供可调参考信号。 自动频率控制（AFC）电路可以与RF电路的其它组件集成，并且可以基于例如从温度传感器接收的信号来生成用于频率修改电路的频率控制信号。 数模转换器（DAC）电路可以与RF电路的其他部件集成，以实现从基带处理器电路到RF电路的全数字频率控制通信。

    SYSTEM AND METHOD FOR BIASING ELECTRICAL CIRCUITS
    4.
    发明申请
    SYSTEM AND METHOD FOR BIASING ELECTRICAL CIRCUITS 失效
    用于偏置电路的系统和方法

    公开(公告)号：US20050212585A1

    公开(公告)日：2005-09-29

    申请号：US10810039

    申请日：2004-03-26

    申请人： Donald Kerth ,  Augusto Marques ,  Dylan Hester ,  Russell Croman

    发明人： Donald Kerth ,  Augusto Marques ,  Dylan Hester ,  Russell Croman

    IPC分类号： H02J1/00 ,  H03B5/04 ,  H03F1/30 ,  H03K3/01

    CPC分类号： H03F1/301 ,  H03B5/04

    摘要： A bias system is disclosed including a calibration bus to which a controller, a reference bias source, a master bias source, and first and second slave bias sources are coupled. The controller varies a control code sent over the calibration bus to the master bias source until a particular control code is found that causes the bias signal of the master bias source to equal a desired bias value which is provided by the reference bias source. The controller then sends the particular control code to the first and second slave bias sources to cause the first and second slave bias sources to generate a bias signal having the same desired bias value as the master bias source. Isolation between load circuits coupled to the first and second bias sources is thus enhanced while providing low noise, stable operation

    摘要翻译： 公开了一种偏置系统，其包括校准总线，控制器，参考偏置源，主偏置源以及第一和第二从属偏置源耦合到校准总线。 控制器将通过校准总线发送的控制代码改变为主偏置源，直到找到导致主偏置源的偏置信号等于由参考偏置源提供的期望偏置值的特定控制代码。 然后，控制器将特定控制码发送到第一和第二从属偏置源，以使第一和第二从属偏置源产生具有与主偏置源相同的期望偏置值的偏置信号。 因此，耦合到第一和第二偏置源的负载电路之间的隔离增强，同时提供低噪声，稳定的操作

    System and method for reducing spurious emissions in a wireless communication device including a testing apparatus
    5.
    发明申请
    System and method for reducing spurious emissions in a wireless communication device including a testing apparatus 失效
    一种用于在包括测试装置的无线通信设备中减少杂散发射的系统和方法

    公开(公告)号：US20070060069A1

    公开(公告)日：2007-03-15

    申请号：US11341149

    申请日：2006-01-27

    申请人： Donald Kerth ,  James Maligeorgos ,  Xiaochuan Guo ,  Augusto Marques

    发明人： Donald Kerth ,  James Maligeorgos ,  Xiaochuan Guo ,  Augusto Marques

    IPC分类号： H04B17/00

    CPC分类号： H04B17/0085

    摘要： A wireless communication device is disclosed wherein isolation buffers couple to respective active circuits or stages of the device to convey test information regarding such active circuits to a test data line from which status information may be collected. The communication device operates in two modes, namely a normal operational mode wherein the isolation buffers effectively short spurious emissions from the active circuits to a ground, and a test mode wherein the isolation buffers may convey test information from a selected active circuit to the test data line. The isolation buffers prevent spurious emissions from escaping the active circuits to which they are coupled and prevent spurious emissions from traveling from active circuit to active circuit over the test data line throughout the wireless device.

    摘要翻译： 公开了一种无线通信设备，其中隔离缓冲器耦合到设备的相应有效电路或级，以将关于这种有源电路的测试信息传送到可以从其收集状态信息的测试数据线。 通信设备以两种模式操作，即正常操作模式，其中隔离缓冲器有效地将有源电路的杂散发射短路到地，以及测试模式，其中隔离缓冲器可以将测试信息从所选择的有源电路传送到测试数据 线。 隔离缓冲器防止杂散发射从它们耦合到的有源电路中逸出，并防止杂散发射通过整个无线设备的测试数据线从有源电路传播到有源电路。

    System and method for reducing spurious emissions in a wireless communication device including a testing apparatus
    7.
    发明申请
    System and method for reducing spurious emissions in a wireless communication device including a testing apparatus 审中-公开
    一种用于在包括测试装置的无线通信设备中减少杂散发射的系统和方法

    公开(公告)号：US20070099586A1

    公开(公告)日：2007-05-03

    申请号：US11264631

    申请日：2005-11-01

    申请人： Donald Kerth ,  James Maligeorgos ,  Xiaochuan Guo ,  Augusto Marques

    发明人： Donald Kerth ,  James Maligeorgos ,  Xiaochuan Guo ,  Augusto Marques

    IPC分类号： H03D7/16

    CPC分类号： H04M1/24

    摘要： A wireless communication device is disclosed wherein isolation buffers couple to respective active circuits or stages of the device to convey test information regarding such active circuits to a test data line from which status information may be collected. The communication device operates in two modes, namely a normal operational mode wherein the isolation buffers effectively short spurious emissions from the active circuits to a ground, and a test mode wherein the isolation-buffers may convey test information from a selected active circuit to the test data line. The isolation buffers prevent spurious emissions from escaping the active circuits to which they are coupled and prevent spurious emissions from traveling from active circuit to active circuit over the test data line throughout the wireless device.

    摘要翻译： 公开了一种无线通信设备，其中隔离缓冲器耦合到设备的相应有效电路或级，以将关于这种有源电路的测试信息传送到可以从其收集状态信息的测试数据线。 通信设备以两种模式工作，即正常操作模式，其中隔离缓冲器有效地将有源电路的杂散发射短路到地，以及测试模式，其中隔离缓冲器可以将测试信息从所选择的有效电路传送到测试 数据线。 隔离缓冲器防止杂散发射从它们耦合到的有源电路中逸出，并防止杂散发射通过整个无线设备的测试数据线从有源电路传播到有源电路。

    Quasi non-volatile memory for use in a receiver
    8.
    发明申请
    Quasi non-volatile memory for use in a receiver 有权
    用于接收机的准非易失性存储器

    公开(公告)号：US20070060093A1

    公开(公告)日：2007-03-15

    申请号：US11227796

    申请日：2005-09-15

    申请人： Donald Kerth ,  Brian Green ,  Augusto Marques

    发明人： Donald Kerth ,  Brian Green ,  Augusto Marques

    IPC分类号： H04B1/10

    CPC分类号： H04W52/028 ,  H04B1/16 ,  Y02D70/40

    摘要： Image rejection factors are calibrated for a receiver circuit (106) during an initialization period. The image rejection factors are stored in a quasi non-volatile memory (124) associated with the receiver circuit (106). The quasi non-volatile memory (124) is powered from a first source (VDD A) during a first receiver mode and from a second source (VIO) during a second receiver mode.

    摘要翻译： 在初始化期间，针对接收器电路（106）校准图像抑制因子。 图像抑制因子被存储在与接收器电路（106）相关联的准非易失性存储器（124）中。 准非易失性存储器（124）在第一接收器模式期间由第一源（V SUB DD A）供电，并且在第一接收器模式期间从第二源（V SUB IO） 第二接收机模式。

    Analog varactor
    9.
    发明申请
    Analog varactor 有权
    模拟变容二极管

    公开(公告)号：US20070057743A1

    公开(公告)日：2007-03-15

    申请号：US11227421

    申请日：2005-09-14

    申请人： Peter Vancorenland ,  Lysander Lim ,  Augusto Marques ,  Scott Willingham

    发明人： Peter Vancorenland ,  Lysander Lim ,  Augusto Marques ,  Scott Willingham

    IPC分类号： H03B5/12

    CPC分类号： H03J3/185 ,  H03B5/1243 ,  H03B5/1293 ,  H03B2200/0062 ,  H03B2201/0208 ,  H03B2201/0266 ,  H03J7/10 ,  H03J2200/36 ,  H03L7/099

    摘要： An oscillator includes a plurality of varactor cells to receive a control signal to control a frequency of the oscillator. Each of the varactor cells includes a switch that includes a first terninal to receive the control signal and a second terminal such that the switch operates to control a capacitance of the varactor cell in response to a voltage between the first and second terminals. The oscillator includes a bias circuit to provide a different bias voltage to each second terminal and an amplifier that is coupled to the varactor cells to generate an oscillating signal.

    摘要翻译： 振荡器包括多个变容二极管单元，用于接收控制信号以控制振荡器的频率。 每个变容二极管单元包括开关，该开关包括用于接收控制信号的第一三极管和第二端子，使得开关操作以响应于第一和第二端子之间的电压来控制变容二极管单元的电容。 振荡器包括偏置电路，以向每个第二端子提供不同的偏置电压，以及耦合到变容二极管单元以产生振荡信号的放大器。