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1. 发明授权

US08406702B2 Clock signal generating arrangement for a communication device 有权
标题翻译：用于通信设备的时钟信号产生装置
公开(公告)号：US08406702B2
公开(公告)日：2013-03-26
申请号：US12920607
申请日：2008-03-26
申请人： Michael Crowley , Norman Beamish , Sean Sexton , Kenneth Stebbings
发明人： Michael Crowley , Norman Beamish , Sean Sexton , Kenneth Stebbings
IPC分类号： H04B1/40
CPC分类号： H03L7/18 , G06F1/04
摘要： A clock signal generating arrangement for a communication device generates a system clock signal at an output for use as a timing reference. The clock signal generating arrangement comprises a reference clock generator for generating a reference clock signal, a main clock generator for generating a main clock signal having a greater accuracy than the reference clock signal, a clock adjust circuit coupled to the reference clock generator for generating a compensated reference clock signal to compensate for error in the reference clock signal and a clock signal selector coupled to the reference clock generator the main clock generator and the clock adjust circuit. The clock signal selector selectively provides to the output of the clock signal generating arrangement as the system clock signal the compensated reference clock signal when an error in the reference clock signal reaches a first predetermined threshold and until the error in the reference clock signal has been compensated and otherwise the reference clock signal when the communication device is operating in an idle mode or the main clock signal when the communication device is operating in an active mode.
摘要翻译：用于通信设备的时钟信号产生装置在输出端产生用作定时参考的系统时钟信号。时钟信号产生装置包括用于产生参考时钟信号的参考时钟发生器，用于产生具有比参考时钟信号更高精度的主时钟信号的主时钟发生器，耦合到参考时钟发生器的时钟调整电路，补偿参考时钟信号以补偿参考时钟信号中的误差，以及连接到参考时钟发生器的主时钟发生器和时钟调整电路的时钟信号选择器。当参考时钟信号的误差达到第一预定阈值并且直到参考时钟信号中的误差已被补偿时，时钟信号选择器选择性地向时钟信号产生装置的输出提供补偿的参考时钟信号作为系统时钟信号否则当通信设备在空闲模式下操作时的参考时钟信号或当通信设备在活动模式下操作时的主时钟信号。

2. 发明申请

US20110012663A1 CLOCK SIGNAL GENERATING ARRANGEMENT FOR A COMMUNICATION DEVICE 有权
标题翻译：用于通信设备的时钟信号发生装置
公开(公告)号：US20110012663A1
公开(公告)日：2011-01-20
申请号：US12920607
申请日：2008-03-26
申请人： Michael Crowley , Norman Beamish , Sean Sexton , Kenneth Stebbings
发明人： Michael Crowley , Norman Beamish , Sean Sexton , Kenneth Stebbings
IPC分类号： H03K3/00
CPC分类号： H03L7/18 , G06F1/04
摘要： A clock signal generating arrangement for a communication device generates a system clock signal at an output for use as a timing reference. The clock signal generating arrangement comprises a reference clock generator for generating a reference clock signal, a main clock generator for generating a main clock signal having a greater accuracy than the reference clock signal, a clock adjust circuit coupled to the reference clock generator for generating a compensated reference clock signal to compensate for error in the reference clock signal and a clock signal selector coupled to the reference clock generator the main clock generator and the clock adjust circuit. The clock signal selector selectively provides to the output of the clock signal generating arrangement as the system clock signal the compensated reference clock signal when an error in the reference clock signal reaches a first predetermined threshold and until the error in the reference clock signal has been compensated and otherwise the reference clock signal when the communication device is operating in an idle mode or the main clock signal when the communication device is operating in an active mode.
摘要翻译：用于通信设备的时钟信号产生装置在输出端产生用作定时参考的系统时钟信号。时钟信号产生装置包括用于产生参考时钟信号的参考时钟发生器，用于产生具有比参考时钟信号更高精度的主时钟信号的主时钟发生器，耦合到参考时钟发生器的时钟调整电路，补偿参考时钟信号以补偿参考时钟信号中的误差，以及连接到参考时钟发生器的时钟信号选择器，主时钟发生器和时钟调整电路。当参考时钟信号的误差达到第一预定阈值并且直到参考时钟信号中的误差已被补偿时，时钟信号选择器选择性地向时钟信号产生装置的输出提供补偿参考时钟信号作为系统时钟信号否则当通信设备在空闲模式下操作时的参考时钟信号或当通信设备在活动模式下操作时的主时钟信号。

3. 发明授权

US08000665B2 Systems and methods for adjusting headroom of a power amplifier 有权
标题翻译：调节功率放大器余量的系统和方法
公开(公告)号：US08000665B2
公开(公告)日：2011-08-16
申请号：US12259867
申请日：2008-10-28
申请人： Kenneth Stebbings , Vivek Bhan , Daniel B. Schwartz , Bing Xu
发明人： Kenneth Stebbings , Vivek Bhan , Daniel B. Schwartz , Bing Xu
IPC分类号： H03G3/00 , H04B1/04 , H04L25/03
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0266 , H03F1/3247 , H03F3/195 , H03F3/24 , H03G3/3042 , H04B2001/045 , H04L27/368
摘要： Systems and methods are provided for controlling headroom of an amplifier (e.g., in a transmitter). A method comprises obtaining a target output power for a current interval and obtaining a target headroom for a subsequent interval. The method continues by adjusting, during the current interval, the power output capability of the amplifier based on the target headroom and adjusting the input power of an input signal based on the target output power, such that the output power of the amplifier is substantially constant during the current interval as the power output capability of the amplifier is adjusted.
摘要翻译：提供了用于控制放大器（例如，在发射机中）的余量的系统和方法。一种方法包括获得当前间隔的目标输出功率并获得用于后续间隔的目标余量。该方法通过在当前时间间隔期间基于目标余量调整放大器的功率输出能力并基于目标输出功率调整输入信号的输入功率，使得放大器的输出功率基本上恒定在当前时间间隔内，调节放大器的功率输出能力。

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