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1. 发明授权

US07433420B1 Phase rotation estimation 有权
标题翻译：相位旋转估计
公开(公告)号：US07433420B1
公开(公告)日：2008-10-07
申请号：US11061153
申请日：2005-02-18
申请人： Sriraman Dakshinamurthy , Joel L. Dawson , Derek K. Shaeffer , Korhan Titizer
发明人： Sriraman Dakshinamurthy , Joel L. Dawson , Derek K. Shaeffer , Korhan Titizer
IPC分类号： H04L25/49
CPC分类号： H04L27/368
摘要： Apparatus, systems, and methods are described that implement techniques for estimating a relative rotation between a first complex signal and a second complex signal. In apparatus form, a rotation-estimation circuit includes a first quadrant detector and receives the first and second complex signals and produces an estimate of the relative rotation between the complex signals. A variable rotator receives the estimate of the relative rotation and rotates at least one of the first and second complex signals using the estimate of the relative rotation. In method form, a first quadrant estimate is calculated that corresponds to the relative rotation between the first and second complex signals, and at least one of the first and second complex signals is rotated using the quadrant estimate of the relative rotation.
摘要翻译：描述了实现用于估计第一复信号和第二复信号之间的相对旋转的技术的装置，系统和方法。在装置形式中，旋转估计电路包括第一象限检测器，并接收第一和第二复数信号，并产生复信号之间的相对旋转的估计。可变旋转器接收相对旋转的估计，并使用相对旋转的估计来旋转第一和第二复数信号中的至少一个。在方法形式中，计算对应于第一和第二复数信号之间的相对旋转的第一象限估计，并且使用相对旋转的象限估计来旋转第一和第二复数信号中的至少一个。

2. 发明授权

US07164313B2 Method and apparatus for opening a feedback loop 有权
标题翻译：打开反馈回路的方法和装置
公开(公告)号：US07164313B2
公开(公告)日：2007-01-16
申请号：US10988432
申请日：2004-11-12
申请人： Peter Capofreddi , Derek K. Shaeffer , Sriraman Dakshinamurthy , Korhan Titizer
发明人： Peter Capofreddi , Derek K. Shaeffer , Sriraman Dakshinamurthy , Korhan Titizer
IPC分类号： H03F1/36
CPC分类号： H03G3/3042 , H03F1/0205 , H03F1/3247 , H03F1/3252 , H03F1/34 , H03F3/24 , H03F2200/105 , H03F2200/465
摘要： Circuits, methods, and systems are provided for opening a primary feedback loop in a transmitter. An auxiliary feedback loop can be closed when the primary feedback loop is opened, and a controller can match a gain of the primary feedback loop to another gain in the transmitter.
摘要翻译：提供电路，方法和系统用于打开发射机中的主反馈环路。当主反馈回路打开时，辅助反馈回路可以闭合，并且控制器可以将主反馈回路的增益与变送器中的另一增益相匹配。

3. 发明授权

US07382834B2 Phase rotation estimation 有权
标题翻译：相位旋转估计
公开(公告)号：US07382834B2
公开(公告)日：2008-06-03
申请号：US10841290
申请日：2004-05-06
申请人： Joel L. Dawson , Sriraman Dakshinamurthy , Derek K. Shaeffer
发明人： Joel L. Dawson , Sriraman Dakshinamurthy , Derek K. Shaeffer
IPC分类号： H04L25/49
CPC分类号： H03F1/32
摘要： Apparatus, systems, and methods implementing techniques for estimating a relative rotation between a first complex signal and a second complex signal. The first complex signal is quantized to produce a quantized signal, and the quantized signal and an additional signal are combined, where the additional signal corresponds to the second complex signal. An estimate of a relative rotation between the first complex signal and the second complex signal is generated in accordance with the combined signal.
摘要翻译：实现用于估计第一复信号和第二复信号之间的相对旋转的技术的装置，系统和方法。第一复信号被量化以产生量化信号，并且量化信号和附加信号被组合，其中附加信号对应于第二复信号。根据组合信号产生第一复信号和第二复信号之间的相对旋转的估计。

4. 发明申请

US20060103462A1 Method and apparatus for opening a feedback loop 有权
标题翻译：打开反馈回路的方法和装置
公开(公告)号：US20060103462A1
公开(公告)日：2006-05-18
申请号：US10988432
申请日：2004-11-12
申请人： Peter Capofreddi , Derek Shaeffer , Sriraman Dakshinamurthy , Korhan Titizer
发明人： Peter Capofreddi , Derek Shaeffer , Sriraman Dakshinamurthy , Korhan Titizer
IPC分类号： H03F1/36
CPC分类号： H03G3/3042 , H03F1/0205 , H03F1/3247 , H03F1/3252 , H03F1/34 , H03F3/24 , H03F2200/105 , H03F2200/465
摘要： Circuits, methods, and systems are provided for opening a primary feedback loop in a transmitter. An auxiliary feedback loop can be closed when the primary feedback loop is opened, and a controller can match a gain of the primary feedback loop to another gain in the transmitter.
摘要翻译：提供电路，方法和系统用于打开发射机中的主反馈环路。当主反馈回路打开时，辅助反馈回路可以闭合，并且控制器可以将主反馈回路的增益与变送器中的另一增益相匹配。

5. 发明申请

US20100232413A1 Processing of Multi-Carrier Signals Before Power Amplifier Amplification 有权
标题翻译：功率放大器放大前多载波信号的处理
公开(公告)号：US20100232413A1
公开(公告)日：2010-09-16
申请号：US12719169
申请日：2010-03-08
申请人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
发明人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
IPC分类号： H04J1/00
CPC分类号： H04L27/2627 , H04L25/03834 , H04L27/2614 , H04L27/36
摘要： Embodiments for methods and apparatuses for processing a multi-carrier signal are disclosed. One method includes shaping a frequency spectrum of a multi-carrier transmit signal wherein an amplitude of a plurality of subcarriers of the multi-carrier transmit signal is increased relative to at least one other subcarrier of the multi-carrier transmit signal. The shaped frequency spectrum multi-carrier transmit signal is amplified with a power amplifier, wherein a power level of an output of the power amplifier is greater than a rated power level of the power amplifier.
摘要翻译：公开了用于处理多载波信号的方法和装置的实施例。一种方法包括对多载波发射信号的频谱进行整形，其中多载波发射信号的多个子载波的幅度相对于多载波发射信号的至少一个其他副载波增加。成形频谱多载波发射信号用功率放大器放大，其中功率放大器的输出的功率电平大于功率放大器的额定功率电平。

6. 发明授权

US08437697B2 Processing of multi-carrier signals before power amplifier amplification 失效
标题翻译：在功率放大器之前处理多载波信号
公开(公告)号：US08437697B2
公开(公告)日：2013-05-07
申请号：US13592813
申请日：2012-08-23
申请人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
发明人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
IPC分类号： H04B1/02
CPC分类号： H04L27/2627 , H04L25/03834 , H04L27/2614 , H04L27/36
摘要： Embodiments for methods and apparatuses for processing a multi-carrier signal are disclosed. One method includes shaping a frequency spectrum of a multi-carrier transmit signal wherein an amplitude of a plurality of subcarriers of the multi-carrier transmit signal is increased relative to at least one other subcarrier of the multi-carrier transmit signal. The shaped frequency spectrum multi-carrier transmit signal is amplified with a power amplifier, wherein a power level of an output of the power amplifier is greater than a rated power level of the power amplifier.
摘要翻译：公开了用于处理多载波信号的方法和装置的实施例。一种方法包括对多载波发射信号的频谱进行整形，其中多载波发射信号的多个子载波的幅度相对于多载波发射信号的至少一个其他副载波增加。成形频谱多载波发射信号用功率放大器放大，其中功率放大器的输出的功率电平大于功率放大器的额定功率电平。

7. 发明申请

US20120314804A1 Processing of Multi-Carrier Signals Before Power Amplifier Amplification 失效
标题翻译：功率放大器放大前多载波信号的处理
公开(公告)号：US20120314804A1
公开(公告)日：2012-12-13
申请号：US13592813
申请日：2012-08-23
申请人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
发明人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
IPC分类号： H04L27/20
CPC分类号： H04L27/2627 , H04L25/03834 , H04L27/2614 , H04L27/36
摘要： Embodiments for methods and apparatuses for processing a multi-carrier signal are disclosed. One method includes shaping a frequency spectrum of a multi-carrier transmit signal wherein an amplitude of a plurality of subcarriers of the multi-carrier transmit signal is increased relative to at least one other subcarrier of the multi-carrier transmit signal. The shaped frequency spectrum multi-carrier transmit signal is amplified with a power amplifier, wherein a power level of an output of the power amplifier is greater than a rated power level of the power amplifier.
摘要翻译：公开了用于处理多载波信号的方法和装置的实施例。一种方法包括对多载波发射信号的频谱进行整形，其中多载波发射信号的多个子载波的幅度相对于多载波发射信号的至少一个其他副载波增加。成形频谱多载波发射信号用功率放大器放大，其中功率放大器的输出的功率电平大于功率放大器的额定功率电平。

8. 发明授权

US08275319B2 Processing of multi-carrier signals before power amplifier amplification 有权
标题翻译：在功率放大器之前处理多载波信号
公开(公告)号：US08275319B2
公开(公告)日：2012-09-25
申请号：US12719169
申请日：2010-03-08
申请人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
发明人： Sriraman Dakshinamurthy , Robert G. Lorenz , Ming Hu , Derek K. Shaeffer
IPC分类号： H04B1/02
CPC分类号： H04L27/2627 , H04L25/03834 , H04L27/2614 , H04L27/36
摘要： Embodiments for methods and apparatuses for processing a multi-carrier signal are disclosed. One method includes shaping a frequency spectrum of a multi-carrier transmit signal wherein an amplitude of a plurality of subcarriers of the multi-carrier transmit signal is increased relative to at least one other subcarrier of the multi-carrier transmit signal. The shaped frequency spectrum multi-carrier transmit signal is amplified with a power amplifier, wherein a power level of an output of the power amplifier is greater than a rated power level of the power amplifier.
摘要翻译：公开了用于处理多载波信号的方法和装置的实施例。一种方法包括对多载波发射信号的频谱进行整形，其中多载波发射信号的多个子载波的幅度相对于多载波发射信号的至少一个其他副载波增加。成形频谱多载波发射信号用功率放大器放大，其中功率放大器的输出的功率电平大于功率放大器的额定功率电平。

9. 发明申请

US20130107926A1 Controlling a Power Amplifier Based on Transmitter Output Emissions 有权
标题翻译：基于发射机输出排放控制功率放大器
公开(公告)号：US20130107926A1
公开(公告)日：2013-05-02
申请号：US13491175
申请日：2012-06-07
申请人： Ying Xia , Sriraman Dakshinamurthy , Robert Lorenz
发明人： Ying Xia , Sriraman Dakshinamurthy , Robert Lorenz
IPC分类号： H03G3/30
CPC分类号： H03G3/3042 , H03F1/0233 , H03F1/0255 , H03F3/24
摘要： Methods and systems for controlling the supply voltage provided to a power amplifier (PA) in a radio frequency (RF) transmitter based on measured output spectrum emissions are provided. In an embodiment, the PA supply voltage is adjusted such that spectrum emission limits are satisfied with predetermined margins. In another embodiment, the predetermined margins are reduced to lower power consumption of the PA.
摘要翻译：提供了基于测量的输出频谱发射来控制提供给射频（RF）发射机中的功率放大器（PA）的电源电压的方法和系统。在一个实施例中，调整PA电源电压，使得在预定余量下满足频谱发射限制。在另一个实施例中，预定裕度被减小以降低PA的功率消耗。

10. 发明申请

US20130109441A1 Method of Calibrating the Delay of an Envelope Tracking Signal 有权
标题翻译：校准信号跟踪信号延迟的方法
公开(公告)号：US20130109441A1
公开(公告)日：2013-05-02
申请号：US13491184
申请日：2012-06-07
申请人： Robert Lorenz , Sumant Ranganathan , Xinyu Yu , Sriraman Dakshinamurthy
发明人： Robert Lorenz , Sumant Ranganathan , Xinyu Yu , Sriraman Dakshinamurthy
IPC分类号： H04W88/02
CPC分类号： H04W88/02 , H03F1/0227 , H03F1/3241 , H03F3/193 , H03F3/245 , H04B1/0483 , H04B2001/0425
摘要： Embodiments provide systems and methods for aligning the supply voltage signal applied to a power amplifier (PA) with the radio frequency (RF) output signal of the PA in a wireless device. The RF output signal is generated by applying a transmit signal to a transmit path of the wireless device. The supply voltage is generated by applying an envelope tracking (ET) signal, based on the transmit signal, to an envelope tracking (ET) path of the wireless device. Embodiments operate by estimating the delays of the ET path and the transmit path, and then controlling a relative delay between the transmit signal and the ET signal accordingly. In an embodiment, estimation of the delays of the ET path and the transmit path is done by correlating respective signals of each path.
摘要翻译：实施例提供了用于将施加到功率放大器（PA）的电源电压信号与无线设备中的PA的射频（RF）输出信号对准的系统和方法。 RF输出信号通过将发送信号施加到无线设备的发送路径而产生。通过将包络跟踪（ET）信号基于发射信号施加到无线设备的包络跟踪（ET）路径来产生电源电压。实施例通过估计ET路径和发射路径的延迟，然后相应地控制发射信号和ET信号之间的相对延迟来进行操作。在一个实施例中，通过关联每个路径的相应信号来完成对ET路径和发送路径的延迟的估计。

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