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1.发明授权公开(公告)号：US07962109B1
公开(公告)日：2011-06-14
申请号：US11679201
申请日：2007-02-27
IPC分类号： H04B17/00
CPC分类号： H03G3/3047
摘要： A system and method for detecting and correcting over-current and/or over-voltage conditions in power amplifier circuitry in a transmit chain of a mobile terminal are provided. In general, over-current detection and correction circuitry combines a current detection signal indicative of a current provided to or drained by the power amplifier circuitry during ramp-up for a transmit burst and a substantially inverse current ramping profile to provide a first constant value. The first constant value is compared to a current threshold or limit value to determine whether an over-current condition exists. If an over-current condition exists, the over-current detection and correction circuitry operates to reduce the output power of the power amplifier circuitry during ramp-up for the transmit burst to correct for the over-current condition. In a similar manner, over-voltage detection circuitry operates to detect and correct over-voltage conditions during ramp-up for the transmit burst.
摘要翻译： 提供了一种用于在移动终端的发射链中的功率放大器电路中检测和校正过电流和/或过电压条件的系统和方法。 通常，过电流检测和校正电路组合指示在斜波上升期间功率放大器电路提供给发射脉冲串的电流的电流检测信号和用于发射脉冲串的基本上反向电流斜坡分布以提供第一恒定值。 将第一常数值与当前阈值或限制值进行比较，以确定是否存在过电流条件。 如果存在过电流状况，则过流检测和校正电路用于在发射突发的斜坡上降低功率放大器电路的输出功率，以校正过电流状况。 以类似的方式，过电压检测电路用于在发射突发的斜坡上升期间检测和校正过电压状况。
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公开(公告)号：US07977919B1
公开(公告)日：2011-07-12
申请号：US11679194
申请日：2007-02-27
IPC分类号： H02J7/00
CPC分类号： H04B1/06 , H04B2001/0416
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The resistance of the battery is thereafter used to compensate for battery droop during over-voltage detection and correction for one or more subsequent transmit bursts.
摘要翻译： 提供了一种用于在发送突发期间考虑电池下降的移动终端的发射机的过电压检测和校正系统。 通常，在第一发射突发的斜坡上升之前，测量移动终端的电池在空载状态下的电压。 在发送突发的斜坡上升之后，在满负载时测量电池的电压，并检测在满载时提供给发射机的功率放大器的电流。 基于空载电池的测量电压，满载时电池的测量电压和满载时提供给功率放大器的检测电流，确定电池的电阻。 此后，电池的电阻用于补偿过电压检测期间的电池下降和针对一个或多个后续发射脉冲串的校正。
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公开(公告)号：US08536837B1
公开(公告)日：2013-09-17
申请号：US13156518
申请日：2011-06-09
IPC分类号： H02J7/00
CPC分类号： H04B1/06 , H04B2001/0416
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The resistance of the battery is thereafter used to compensate for battery droop during over-voltage detection and correction for one or more subsequent transmit bursts.
摘要翻译： 提供了一种用于在发送突发期间考虑电池下降的移动终端的发射机的过电压检测和校正系统。 通常，在第一发射突发的斜坡上升之前，测量移动终端的电池在空载状态下的电压。 在发送突发的斜坡上升之后，在满负载时测量电池的电压，并检测在满载时提供给发射机的功率放大器的电流。 基于空载电池的测量电压，满载时电池的测量电压和满载时提供给功率放大器的检测电流，确定电池的电阻。 此后，电池的电阻用于补偿过电压检测期间的电池下降和针对一个或多个后续发射脉冲串的校正。
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4.发明授权Utilizing computed battery resistance as a battery-life indicator in a mobile terminal 有权利用计算的电池电阻作为移动终端中的电池寿命指示器公开(公告)号：US08035397B1
公开(公告)日：2011-10-11
申请号：US12873968
申请日：2010-09-01
IPC分类号： G01N27/416 , H04M1/00 , H04B1/04
CPC分类号： G01R31/3662 , G01R31/3624 , G01R31/3679
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The battery resistance is thereafter updated as desired and used as an indicator of remaining battery-life or power of the battery of the mobile terminal.
摘要翻译： 提供了一种用于在发送突发期间考虑电池下降的移动终端的发射机的过电压检测和校正系统。 通常，在第一发射突发的斜坡上升之前，测量移动终端的电池在空载状态下的电压。 在发送突发的斜坡上升之后，在满负载时测量电池的电压，并检测在满载时提供给发射机的功率放大器的电流。 基于空载电池的测量电压，满载时电池的测量电压和满载时提供给功率放大器的检测电流，确定电池的电阻。 然后根据需要更新电池电阻，并将其用作移动终端的电池的剩余电池寿命或电力的指标。
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公开(公告)号：US07956615B1
公开(公告)日：2011-06-07
申请号：US11679199
申请日：2007-02-27
IPC分类号： G01N27/416
CPC分类号： G01R31/3662 , G01R31/3624 , G01R31/3679
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The battery resistance is thereafter updated as desired and used as an indicator of remaining battery-life or power of the battery of the mobile terminal.
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公开(公告)号：US09019011B2
公开(公告)日：2015-04-28
申请号：US13486012
申请日：2012-06-01
CPC分类号： H03F1/32 , H03F1/0222
摘要： A method for power amplifier (PA) calibration for an envelope tracking system of a wireless device is disclosed. The method involves measuring an output power of a PA that is a part under test (PUT) at a predetermined input power. Another step includes calculating a gain equal to the output power of the PA divided by the predetermined input power. A next step involves calculating a gain correction by subtracting the calculated gain from a desired gain. Other steps include determining an expected supply voltage for the PA at the desired gain using the gain correction applied to a nominal curve of gain versus PA supply voltage, and then storing the expected supply voltage for the PA versus input power in memory.
摘要翻译： 公开了一种用于无线设备的包络跟踪系统的功率放大器（PA）校准方法。 该方法包括以预定输入功率测量作为被测部件（PUT）的PA的输出功率。 另一步骤包括计算等于PA的输出功率除以预定输入功率的增益。 下一步涉及通过从期望的增益中减去所计算的增益来计算增益校正。 其他步骤包括使用增益校正应用于增益对PA电源电压的增益校正来确定期望增益的PA的预期电源电压，然后将PA的预期电源电压与输入功率存储在存储器中。
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公开(公告)号：US08774065B2
公开(公告)日：2014-07-08
申请号：US13460861
申请日：2012-05-01
IPC分类号： H04B7/00
CPC分类号： H04B1/0067 , H03F1/02 , H03F1/0227 , H03F3/24 , H03F3/68 , H03F3/72 , H03F2203/7209 , H03F2203/7221 , H04B2001/045 , H04L5/001
摘要： A front end radio architecture (FERA) with power management is disclosed. The FERA includes a first power amplifier (PA) block having a first-first PA and a first-second PA, and a second PA block having a second-first PA and a second-second PA. First and second modulated switchers are adapted to selectively supply power to the first-first PA and the second-first PA, and to supply power to the first-second PA and the second-second PA, respectively. The first and second modulated switchers have a modulation bandwidth of at least 20 MHz and are both suitable for envelope tracking modulation. A control system is adapted to selectively enable and disable the first-first PA, first-second PA, the second-first PA, and the second-second PA. First and second switches are responsive to control signals to route carriers and received signals between first and second antennas depending upon a selectable mode of operation such as intra-band or inter-band operation.
摘要翻译： 公开了具有电源管理的前端无线电架构（FERA）。 FERA包括具有第一第一PA和第一秒PA的第一功率放大器（PA）块和具有第二第一PA和第二秒PA的第二PA块。 第一和第二调制切换器适于选择性地向第一优先PA和第二第一PA供电，并分别向第一秒PA和第二秒PA供电。 第一和第二调制切换器具有至少20MHz的调制带宽，并且都适用于包络跟踪调制。 控制系统适于选择性地启用和禁用第一优先PA，第一秒PA，第二优先PA和第二秒PA。 第一和第二开关响应于控制信号以根据诸如带内或频带间操作的可选择的操作模式在第一和第二天线之间路由载波和接收信号。
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公开(公告)号：US07991071B2
公开(公告)日：2011-08-02
申请号：US10147569
申请日：2002-05-16
CPC分类号： H04L27/361
摘要： A transmitter includes a polar modulator that creates phase and amplitude signals which in turn drive a power amplifier. To compensate for AM to PM conversion of the amplitude signal into the amplified signal, a compensation signal is generated from the amplitude signal and combined with the phase signal such that when amplified, the compensation signal cancels the AM to PM conversion. The compensation signal may have an offset term, a linear term, a quadratic term, and a cubic term. A second embodiment comprises a technique by which AM to AM conversion may concurrently be addressed using a second compensation signal.
摘要翻译： 发射机包括极化调制器，其产生相位和幅度信号，其又驱动功率放大器。 为了补偿振幅信号的AM到PM转换为放大信号，从幅度信号产生补偿信号并与相位信号组合，使得当放大时，补偿信号取消AM到PM转换。 补偿信号可以具有偏移项，线性项，二次项和三次项。 第二实施例包括一种可以使用第二补偿信号并行地寻址AM到AM转换的技术。
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9.发明授权System and method for transitioning from one PLL feedback source to another 有权从一个PLL反馈源转换到另一个PLL反馈源的系统和方法公开(公告)号：US07412215B1
公开(公告)日：2008-08-12
申请号：US11144119
申请日：2005-06-03
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03L7/081 , H03L7/087 , H03L7/16 , H03L2207/12
摘要： A system and method are provided for switching from one phase-locked loop feedback source to another in a radio frequency (RF) transmitter. The RF transmitter includes a phase-locked loop (PLL) that provides a phase-modulated RF input signal and power amplifier circuitry that amplifies the RF input signal to provide an RF output signal. The PLL includes switching circuitry that couples a feedback path of the PLL to an output of the PLL for open loop operation and couples the feedback path of the PLL to an output of the power amplifier circuitry for closed loop operation. Prior to switching the feedback path from the output of the PLL to the output of the power amplifier circuitry, time alignment circuitry operates to time-align feedback signals from the outputs of the PLL and the power amplifier circuitry such that switching from open loop operation to closed loop operation causes minimal phase disturbance.
摘要翻译： 提供了一种用于在射频（RF）发射机中从一个锁相环反馈源切换到另一个的系统和方法。 RF发射器包括提供相位调制RF输入信号的锁相环（PLL）和放大RF输入信号以提供RF输出信号的功率放大器电路。 PLL包括将PLL的反馈路径耦合到PLL的输出以用于开环操作的开关电路，并将PLL的反馈路径耦合到用于闭环操作的功率放大器电路的输出。 在将反馈路径从PLL的输出切换到功率放大器电路的输出之前，时间对准电路用于对来自PLL和功率放大器电路的输出的反馈信号进行时间对准，使得从开环操作切换到 闭环运行导致最小的相位扰动。
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公开(公告)号：US07313376B1
公开(公告)日：2007-12-25
申请号：US10987883
申请日：2004-11-12
IPC分类号： H04B1/06
CPC分类号： H04B1/30
摘要： A system and method for performing DC offset correction in a wireless communication receiver during “dead time” are provided. The receiver includes amplifier circuitry that amplifies a received radio frequency (RF) signal, downconversion circuitry that downconverts the received RF signal to provide a downconverted signal, digitization circuitry that digitizes the downconverted signal to provide a digital signal, and digital DC offset correction circuitry enabled during the dead time when there should be no DC content in the downconverted signal. In operation, the digital DC offset correction circuitry detects a DC offset of the digital signal and subtracts the DC offset from the digital signal.
摘要翻译： 提供了在“死区时间”期间在无线通信接收机中进行DC偏移校正的系统和方法。 接收器包括放大接收的射频（RF）信号的放大器电路，降频所接收的RF信号以提供下变频信号的下变频电路，使下变频信号数字化以提供数字信号的数字化电路和启用的数字DC偏移校正电路 在死区时间内，在下变频信号中不应有直流含量。 在操作中，数字DC偏移校正电路检测数字信号的DC偏移，并从数字信号中减去DC偏移。
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