公开(公告)号：US20070060069A1

公开(公告)日：2007-03-15

申请号：US11341149

申请日：2006-01-27

Applicant: Donald Kerth ,  James Maligeorgos ,  Xiaochuan Guo ,  Augusto Marques

Inventor： Donald Kerth ,  James Maligeorgos ,  Xiaochuan Guo ,  Augusto Marques

IPC: H04B17/00

CPC classification number: H04B17/0085

Abstract: 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.

Abstract translation: 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：US20060223455A1

公开(公告)日：2006-10-05

申请号：US11096130

申请日：2005-03-31

Applicant: Donald Kerth

Inventor： Donald Kerth

IPC: H04B1/40

CPC classification number: H04B1/40

Abstract: 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.

Abstract translation: 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：US20070052396A1

公开(公告)日：2007-03-08

申请号：US11220958

申请日：2005-09-07

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

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

IPC: G05F1/613

CPC classification number: G05F1/613

Abstract: 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.

Abstract translation: 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：US20060178122A1

公开(公告)日：2006-08-10

申请号：US11231182

申请日：2005-09-20

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

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

IPC: H04B1/18

CPC classification number: H04B1/006

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20060111071A1

公开(公告)日：2006-05-25

申请号：US11227797

申请日：2005-09-15

Applicant: Tod Paulus ,  Donald Kerth ,  Srihari Adireddy ,  G. Vishakhadatta

Inventor： Tod Paulus ,  Donald Kerth ,  Srihari Adireddy ,  G. Vishakhadatta

IPC: H04B1/18 ,  H04B1/10

CPC classification number: H04B1/30 ,  H04B17/21

Abstract: A method is disclosed for performing dual mode image rejection calibration in a receiver. A first image correction factor is acquired (1302) for use in a receiver system (15) using a first known signal associated with a first signal band during a startup mode. The first image correction factor is adjusted incrementally (1310) during a normal operation mode. A radio frequency (RF) signal associated with the first signal band is received (1324) using the first image correction factor during the normal operation mode.

Abstract translation: 公开了一种用于在接收机中执行双模式拒绝校准的方法。 在启动模式期间，使用与第一信号频带相关联的第一已知信号，在接收机系统（15）中获取第一图像校正因子（1302）。 在正常操作模式期间，第一图像校正因子被逐渐调整（1310）。 在正常操作模式期间，使用第一图像校正因子接收与第一信号频带相关联的射频（RF）信号（1324）。

公开(公告)号：US20050003762A1

公开(公告)日：2005-01-06

申请号：US10878880

申请日：2004-06-28

Applicant: Donald Kerth ,  Richard Behrens ,  Jeffrey Scott ,  G. Vishakhadatta ,  G. Tuttle ,  Vishnu Srinivasan

Inventor： Donald Kerth ,  Richard Behrens ,  Jeffrey Scott ,  G. Vishakhadatta ,  G. Tuttle ,  Vishnu Srinivasan

IPC: H04B1/28 ,  H04B1/40 ,  H04B15/02 ,  H04B15/04 ,  H04B1/10

CPC classification number: H04B1/109 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064 ,  H04L27/2649

Abstract: Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

Abstract translation: 射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。 接收机模拟电路和接收机数字电路被分割，使得接收机模拟电路和接收机数字电路之间的干扰效应趋于降低。

公开(公告)号：US20070057739A1

公开(公告)日：2007-03-15

申请号：US11226041

申请日：2005-09-14

Applicant: James Maligeorgos ,  Donald Kerth ,  Augusto Marques

Inventor： James Maligeorgos ,  Donald Kerth ,  Augusto Marques

IPC: H03B5/12

CPC classification number: H03B5/366 ,  H03B2200/005 ,  H03B2201/0208 ,  H03B2201/0266

Abstract: 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

Applicant: 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

Inventor： 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: H04B1/38

CPC classification number: H04B1/30 ,  H03J2200/10 ,  H04L27/0002

Abstract: 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.

Abstract translation: 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：US20060128338A1

公开(公告)日：2006-06-15

申请号：US11340941

申请日：2006-01-27

Applicant: Donald Kerth ,  Srihari Adireddy ,  Brian Green ,  Todd Paulus ,  Scott Willlingham

Inventor： Donald Kerth ,  Srihari Adireddy ,  Brian Green ,  Todd Paulus ,  Scott Willlingham

IPC: H04B1/18 ,  H04B1/10

CPC classification number: H04B1/28 ,  H04B17/21

Abstract: A wireless communication receiver is disclosed that operates in a test mode to determine image correction information that is used to suppress undesired image signals when the receiver switches to a normal operational mode. In one embodiment, the receiver includes a frequency synthesizer coupled by a quadrature divider to an in-phase (I) mixer and a quadrature mixer. The mixers are coupled by respective analog to digital converters (ADCs) to respective I and Q channel inputs of a digital signal processor (DSP). In the test mode, a test tone is provided to the mixer inputs. The test tone is divided down further and provided to clock the frequency synthesizer, the ADCs and the DSP. This configuration locks together the mixers, frequency synthesizer, ADCs and DSP ratiometrically in frequency during the test mode while image correction information is being determined. When the receiver switches to a normal operating mode, the frequency synthesizer, ADCs and DSP are clocked by a main clock signal instead of the divided down test tone, and the test tone is removed from the mixers.

公开(公告)号：US20060045202A1

公开(公告)日：2006-03-02

申请号：US10930709

申请日：2004-08-31

Applicant: Aslam Rafi ,  Donald Kerth

Inventor： Aslam Rafi ,  Donald Kerth

IPC: H04L27/18

CPC classification number: H03D7/166

Abstract: In one embodiment, the present invention includes a frequency divider that has an I channel to provide an I channel phase; and a Q channel to provide a Q channel phase, in which the I and the Q channels are mirrored with respect to an axis therebetween. The axis may also be substantially coincident with a center axis of a device incorporating the frequency divider, such as a transceiver.

Abstract translation: 在一个实施例中，本发明包括具有I信道以提供I信道相位的分频器; 以及提供Q通道相位的Q通道，其中I通道和Q通道相对于它们之间的轴线被镜像。 该轴线也可以与包含分频器的装置（例如收发器）的中心轴线基本一致。