专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07702301B2 Method and apparatus for distortion correction of RF amplifiers 有权
公开(公告)号：US07702301B2
公开(公告)日：2010-04-20
申请号：US11806125
申请日：2007-05-30
申请人： Gordon G. Rabjohn , Johan Grundlingh
发明人： Gordon G. Rabjohn , Johan Grundlingh
IPC分类号： H01Q11/12
CPC分类号： H03F1/3247
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining an error signals with the appropriate phase shift with input signals to be amplified. The error signal being generated by subtractively combining a fed-forward portion of the input signal with a portion of the fed-back amplified output signal, and signal processing applied to it between its generation and application to correcting the input signal in the baseband domain. The error therefore being down-converted, filtered, and up-converted in the feedback path. The filtered baseband error signal components providing inputs to a controller which adjusts active elements of the amplification and feedback path in order to minimize the distortion within the output of the amplifier.

2. 发明申请

US20070296504A1 Integrated implementation of a voltage boost follower and method therefor 有权
标题翻译：电压升压跟随器的集成实现及其方法
公开(公告)号：US20070296504A1
公开(公告)日：2007-12-27
申请号：US11472473
申请日：2006-06-22
申请人： Gordon G. Rabjohn , Johan Grundlingh , Edward J.W. Whittaker
发明人： Gordon G. Rabjohn , Johan Grundlingh , Edward J.W. Whittaker
IPC分类号： H03F3/04
CPC分类号： H03F1/0255 , H03F3/195 , H03F3/245 , H03F2200/102 , H03F2200/393 , H03F2200/435 , H03F2200/451 , H03F2200/471 , H03F2200/511 , H03F2200/513 , H03F2200/99
摘要： A collector boost circuit is disclosed for providing a first voltage in a first mode of operation to a power amplifier, and another voltage in a second mode of operation to the power amplifier. The collector boost circuit uses an indicator signal derived by an RF detector to switch between the first and the second mode of operation. The another voltage is a boosted voltage greater than the first voltage and is provided when required during peak excursions to prevent amplifier clipping through a boost capacitor. The another voltage is continuous and varies in accordance with the detected peak signal amplitude.
摘要翻译：公开了一种集电极升压电路，用于向功率放大器提供第一工作模式的第一电压，并向功率放大器提供处于第二工作模式的另一电压。集电极升压电路使用由RF检测器导出的指示信号在第一和第二操作模式之间切换。另一个电压是大于第一电压的升压电压，并且在峰值偏移期间需要时提供，以防止通过升压电容器的放大器限幅。另一个电压是连续的，并根据检测到的峰值信号振幅而变化。

3. 发明授权

US07689180B2 Method and apparatus for a cartesian error feedback circuit to correct distortion within a power amplifier 有权
标题翻译：用于校正功率放大器内的失真的笛卡尔误差反馈电路的方法和装置
公开(公告)号：US07689180B2
公开(公告)日：2010-03-30
申请号：US11798566
申请日：2007-05-15
申请人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
发明人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
IPC分类号： H04B1/04
CPC分类号： H03F3/24 , H03F1/34 , H03F2200/336 , H03F2200/57
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining baseband error signals with the appropriate phase shift with baseband input signals, the baseband error signals generated by subtractively combining delayed fed-forward portions of the baseband input signals with baseband converted portions of a fed-back amplified output signal, the amplified output signal being a distorted replica of combined up-converted baseband input signals. The baseband error signals being filtered prior to the combining function, and also providing inputs to a controller which adjusts active elements of the amplification and fed-back paths in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将基带误差信号与基带输入信号相适应的相移相减，通过将基带输入信号的延迟前馈部分与反馈放大输出信号的基带转换部分进行减法组合而产生的基带误差信号，放大的输出信号是组合的上变频基带输入信号的失真副本。基带误差信号在组合功能之前被滤波，并且还向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

4. 发明申请

US20080287077A1 Method and apparatus for cartesian error feedback 有权
标题翻译：笛卡尔误差反馈的方法和装置
公开(公告)号：US20080287077A1
公开(公告)日：2008-11-20
申请号：US11798566
申请日：2007-05-15
申请人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
发明人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
IPC分类号： H04B1/04
CPC分类号： H03F3/24 , H03F1/34 , H03F2200/336 , H03F2200/57
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining baseband error signals with the appropriate phase shift with baseband input signals, the baseband error signals generated by subtractively combining delayed fed-forward portions of the baseband input signals with baseband converted portions of a fed-back amplified output signal, the amplified output signal being a distorted replica of combined up-converted baseband input signals. The baseband error signals being filtered prior to the combining function, and also providing inputs to a controller which adjusts active elements of the amplification and fed-back paths in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将基带误差信号与基带输入信号相适应的相移相减，通过将基带输入信号的延迟的前馈部分与反馈放大的输出信号的基带转换部分进行减法组合而产生的基带误差信号，放大的输出信号是组合的上变频基带输入信号的失真副本。基带误差信号在组合功能之前被滤波，并且还向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

5. 发明授权

US08278963B2 Power detector and method for detecting power 有权
标题翻译：功率检测器和电源检测方法
公开(公告)号：US08278963B2
公开(公告)日：2012-10-02
申请号：US12758130
申请日：2010-04-12
申请人： Gordon G. Rabjohn , Johan Grundlingh , Adrian Long
发明人： Gordon G. Rabjohn , Johan Grundlingh , Adrian Long
IPC分类号： G01R31/02 , G01R1/30
CPC分类号： G01R21/12
摘要： A circuit and method are provided for detecting a power of a signal amplified in a power amplifier. A diode and a voltage bias source are used to shift a voltage of the signal taken at a base of an amplifying transistor of the power amplifier, to generate a positive signal. The positive signal is provided to a base input of an emitter follower exhibiting high input impedance to generate a power detector output which follows the positive signal.
摘要翻译：提供了用于检测在功率放大器中放大的信号的功率的电路和方法。使用二极管和电压偏置源来移位在功率放大器的放大晶体管的基极处拍摄的信号的电压，以产生正信号。正信号被提供给具有高输入阻抗的发射极跟随器的基极输入，以产生跟随正信号的功率检测器输出。

6. 发明授权

US07728663B2 Integrated implementation of a voltage boost follower and method therefor 有权
标题翻译：电压升压跟随器的集成实现及其方法
公开(公告)号：US07728663B2
公开(公告)日：2010-06-01
申请号：US11472473
申请日：2006-06-22
申请人： Gordon G. Rabjohn , Johan Grundlingh , Edward J. Whittaker
发明人： Gordon G. Rabjohn , Johan Grundlingh , Edward J. Whittaker
IPC分类号： H03F3/68
CPC分类号： H03F1/0255 , H03F3/195 , H03F3/245 , H03F2200/102 , H03F2200/393 , H03F2200/435 , H03F2200/451 , H03F2200/471 , H03F2200/511 , H03F2200/513 , H03F2200/99
摘要： A collector boost circuit is disclosed for providing a first voltage in a first mode of operation to a power amplifier, and another voltage in a second mode of operation to the power amplifier. The collector boost circuit uses an indicator signal derived by an RF detector to switch between the first and the second mode of operation. The another voltage is a boosted voltage greater than the first voltage and is provided when required during peak excursions to prevent amplifier clipping through a boost capacitor. The another voltage is continuous and varies in accordance with the detected peak signal amplitude.
摘要翻译：公开了一种集电极升压电路，用于向功率放大器提供第一工作模式的第一电压，并向功率放大器提供处于第二工作模式的另一电压。集电极升压电路使用由RF检测器导出的指示信号在第一和第二操作模式之间切换。另一个电压是大于第一电压的升压电压，并且在峰值偏移期间需要时提供，以防止通过升压电容器的放大器限幅。另一个电压是连续的，并根据检测到的峰值信号振幅而变化。

7. 发明授权

US07680468B2 Method and apparatus for distortion correction of RF amplifiers 有权
标题翻译： RF放大器畸变校正的方法和装置
公开(公告)号：US07680468B2
公开(公告)日：2010-03-16
申请号：US11806124
申请日：2007-05-30
申请人： Gordon G. Rabjohn , Johan Grundlingh
发明人： Gordon G. Rabjohn , Johan Grundlingh
IPC分类号： H01Q11/12
CPC分类号： H03F1/3258 , H03F1/345
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining an error signals with the appropriate phase shift with input signals to be amplified. The error signal being generated by subtractively combining a fed-forward portion of the input signal with a portion of the fed-back amplified output signal, and signal processing applied to it between its generation and application to correcting the input signal in the baseband domain. The error therefore being down-converted, filtered, and up-converted in the feedback path. The filtered baseband error signal components providing inputs to a controller which adjusts active elements of the amplification and feedback path in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将误差信号与适当的相移与要放大的输入信号相减。误差信号是通过将输入信号的前馈部分与反馈放大输出信号的一部分相减组合而产生的，以及在其生成和应用之间施加到其上的信号处理以校正基带域中的输入信号。因此，错误在反馈路径中被下转换，过滤和上转换。滤波后的基带误差信号分量向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

8. 发明申请

US20110248703A1 Power Detector and Method for Detecting Power 有权
标题翻译：功率检测器和检测功率的方法
公开(公告)号：US20110248703A1
公开(公告)日：2011-10-13
申请号：US12758130
申请日：2010-04-12
申请人： Gordon G. Rabjohn , Johan Grundlingh , Adrian Long
发明人： Gordon G. Rabjohn , Johan Grundlingh , Adrian Long
IPC分类号： G01R19/00
CPC分类号： G01R21/12
摘要： A circuit and method are provided for detecting a power of a signal amplified in a power amplifier. A diode and a voltage bias source are used to shift a voltage of the signal taken at a base of an amplifying transistor of the power amplifier, to generate a positive signal. The positive signal is provided to a base input of an emitter follower exhibiting high input impedance to generate a power detector output which follows the positive signal.
摘要翻译：提供了用于检测在功率放大器中放大的信号的功率的电路和方法。使用二极管和电压偏置源来移位在功率放大器的放大晶体管的基极处拍摄的信号的电压，以产生正信号。正信号被提供给具有高输入阻抗的发射极跟随器的基极输入，以产生跟随正信号的功率检测器输出。

9. 发明申请

US20080298501A1 Method and apparatus for distortion correction of RF amplifiers 有权
标题翻译： RF放大器畸变校正的方法和装置
公开(公告)号：US20080298501A1
公开(公告)日：2008-12-04
申请号：US11806124
申请日：2007-05-30
申请人： Gordon G. Rabjohn , Johan Grundlingh
发明人： Gordon G. Rabjohn , Johan Grundlingh
IPC分类号： H04L25/49
CPC分类号： H03F1/3258 , H03F1/345
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining an error signals with the appropriate phase shift with input signals to be amplified. The error signal being generated by subtractively combining a fed-forward portion of the input signal with a portion of the fed-back amplified output signal, and signal processing applied to it between its generation and application to correcting the input signal in the baseband domain. The error therefore being down-converted, filtered, and up-converted in the feedback path. The filtered baseband error signal components providing inputs to a controller which adjusts active elements of the amplification and feedback path in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将误差信号与适当的相移与要放大的输入信号相减。误差信号是通过将输入信号的前馈部分与反馈放大输出信号的一部分相减组合而产生的，以及在其生成和应用之间施加到其上的信号处理以校正基带域中的输入信号。因此，错误在反馈路径中被下转换，过滤和上转换。滤波后的基带误差信号分量向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

10. 发明申请

US20080297247A1 Method and apparatus for distortion correction of RF amplifiers 有权
公开(公告)号：US20080297247A1
公开(公告)日：2008-12-04
申请号：US11806125
申请日：2007-05-30
申请人： Gordon G. Rabjohn , Johan Grundlingh
发明人： Gordon G. Rabjohn , Johan Grundlingh
IPC分类号： H03F1/26
CPC分类号： H03F1/3247
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining an error signals with the appropriate phase shift with input signals to be amplified. The error signal being generated by subtractively combining a fed-forward portion of the input signal with a portion of the fed-back amplified output signal, and signal processing applied to it between its generation and application to correcting the input signal in the baseband domain. The error therefore being down-converted, filtered, and up-converted in the feedback path. The filtered baseband error signal components providing inputs to a controller which adjusts active elements of the amplification and feedback path in order to minimize the distortion within the output of the amplifier.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式