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。

公开(公告)号：US20070057739A1

公开(公告)日：2007-03-15

申请号：US11226041

申请日：2005-09-14

申请人： James Maligeorgos ,  Donald Kerth ,  Augusto Marques

发明人： James Maligeorgos ,  Donald Kerth ,  Augusto Marques

IPC分类号： H03B5/12

CPC分类号： H03B5/366 ,  H03B2200/005 ,  H03B2201/0208 ,  H03B2201/0266

摘要： In one embodiment, the present invention includes a capacitor array that may provide a selected capacitance to a digitally controlled crystal oscillator (DCXO). The array may include multiple sections each having at least one array portion, where each section is to receive different significant portions of a digital control value. The different sections may have different coding schemes. Other embodiments are described and claimed.

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。

公开(公告)号：US20060068736A1

公开(公告)日：2006-03-30

申请号：US11112616

申请日：2005-04-22

申请人： Donald Kerth ,  James Maligeorgos ,  Dylan Hester ,  Lysander Lim ,  Augusto Marques ,  G. Tuttle

发明人： Donald Kerth ,  James Maligeorgos ,  Dylan Hester ,  Lysander Lim ,  Augusto Marques ,  G. Tuttle

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03J7/04 ,  H03B5/36 ,  H03B2201/025 ,  H03J2200/10

摘要： A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal.

摘要翻译： 一种技术包括产生模拟电压以控制振荡器的频率。 模拟信号被转换成数字信号，并且响应于数字信号来控制频率。

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。

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。

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

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。

公开(公告)号：US20060223455A1

公开(公告)日：2006-10-05

申请号：US11096130

申请日：2005-03-31

申请人： Donald Kerth

发明人： Donald Kerth

IPC分类号： H04B1/40

CPC分类号： H04B1/40

摘要： The digital interface between the baseband section and the RF transceiver section of a wireless communication device may cause undesired pulling to an impedance sensitive portion of the RF transceiver section. In one embodiment, an original interface signal that exhibits a duty cycle is modified by an interface control block in the baseband section. The resultant modified interface signal exhibits a duty cycle less than the duty cycle of the original interface signal. In this manner, when the modified interface signal is applied to the RF transceiver section, less pulling of the impedance sensitive portion occurs than if the original interface signal were applied directly to the RF transceiver section.

摘要翻译： 无线通信设备的基带部分和RF收发器部分之间的数字接口可能导致不期望的拉动到RF收发器部分的阻抗敏感部分。 在一个实施例中，呈现占空比的原始接口信号由基带部分中的接口控制块修改。 所产生的经修改的接口信号的占空比小于原始接口信号的占空比。 以这种方式，当将修改的接口信号施加到RF收发器部分时，如果将原始接口信号直接应用于RF收发器部分，则阻抗敏感部分的拉动较少。

公开(公告)号：US20060178122A1

公开(公告)日：2006-08-10

申请号：US11231182

申请日：2005-09-20

申请人： Vishnu Srinivasan ,  Gary Levy ,  Brett Mitchelson ,  Donald Kerth ,  Eric Garlepp ,  G. Tyson Tuttle

发明人： Vishnu Srinivasan ,  Gary Levy ,  Brett Mitchelson ,  Donald Kerth ,  Eric Garlepp ,  G. Tyson Tuttle

IPC分类号： H04B1/18

CPC分类号： H04B1/006

摘要： Interchangeable high band low-noise-amplifiers (LNAs) and low band low-noise-amplifiers (LNAs) and related methods are disclosed that greatly enhance the efficiency of designing handsets for different combinations of frequency bands. The input signals to particular pins on a receiver or transceiver integrated circuit (IC) are swappable such that multiple frequency bands can be input to the same input pins thereby allowing for simplified system design. Efficient programmable techniques are also disclosed for controlling a swap mode within communication ICs. These interchangeable or band swappable input paths, for example, can be utilized to allow interchangeability between high band (PCS, DCS) and low band (GSM, E-GSM) inputs for cellular communications. In this way, for example, handset manufacturers can build a single printed circuit board (PCB) that can be utilized for cellular communications in the United States of America, where 850 MHz (GSM) and 1900 MHz (PCS) bands are utilized, and in Europe, wherein 900 MHz (E-GSM) and 1800 MHz (DCS) bands are utilized.

摘要翻译： 公开了可互换的高频带低噪声放大器（LNA）和低频带低噪声放大器（LNA）及相关方法，这大大提高了针对不同频带组合设计手机的效率。 接收器或收发器集成电路（IC）上的特定引脚的输入信号是可交换的，使得可以将多个频带输入到相同的输入引脚，从而允许简化的系统设计。 还公开了用于控制通信IC内的交换模式的高效可编程技术。 例如，这些可互换或频带可交换的输入路径可用于允许用于蜂窝通信的高频带（PCS，DCS）和低频（GSM，E-GSM）输入之间的互换性。 以这种方式，例如，手机制造商可以构建可用于在美国使用850MHz（GSM）和1900MHz（PCS）频带的美国的蜂窝通信的单个印刷电路板（PCB），以及 在欧洲，其中使用900MHz（E-GSM）和1800MHz（DCS）频带。