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公开(公告)号：US08554162B2
公开(公告)日：2013-10-08
申请号：US13197022
申请日：2011-08-03
申请人： Jonas Lindstrand , Carl Bryant , Henrik Sjöland
发明人： Jonas Lindstrand , Carl Bryant , Henrik Sjöland
CPC分类号： H03F1/523 , H03F1/565 , H03F3/2171 , H03F3/245 , H03F3/45188 , H03F2200/387 , H03F2200/391 , H03F2203/45318 , H03F2203/45332 , H03F2203/45396 , H03F2203/45631 , H03F2203/45638 , H03H7/38
摘要： A power amplifier circuit utilizes a cross-coupled tapped cascade topology together with a technique of applying an RF injection current into a wideband node to provide a single-stage power amplifier with improved PAE, output power, and gain over a wide RF band. The amplifier circuit comprises a cross-coupled cascade transistor unit comprising a pair of cross-coupled cascode transistors, a cross-coupled switching transistor unit comprising a pair of cross-coupled switching transistors, and an RF current generator. RF current generator generates a differential RF injection current, while switching transistor unit amplifies the injection current to generate an amplified injection current at the wideband node of the amplifier circuit and the cascode transistor unit further amplifies the injection current to generate the desired amplified signal at the output of the amplifier circuit. The output signal amplitude generally depends on the differential injection current and the supply voltage VDD applied to the power amplifier circuit.
摘要翻译： 功率放大器电路利用交叉耦合抽头级联拓扑以及将RF注入电流施加到宽带节点中以提供具有改进的PAE，输出功率和宽RF频带上的增益的单级功率放大器的技术。 放大器电路包括交叉耦合级联晶体管单元，其包括一对交叉耦合共源共栅晶体管，包括一对交叉耦合开关晶体管的交叉耦合开关晶体管单元和RF电流发生器。 RF电流发生器产生差分RF注入电流，而开关晶体管单元放大注入电流以在放大器电路的宽带节点处产生放大的注入电流，并且共源共栅晶体管单元进一步放大注入电流以在 输出放大电路。 输出信号幅度通常取决于差分注入电流和施加到功率放大器电路的电源电压VDD。
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公开(公告)号：US20130033321A1
公开(公告)日：2013-02-07
申请号：US13197022
申请日：2011-08-03
申请人： Jonas Lindstrand , Carl Bryant , Henrik Sjöland
发明人： Jonas Lindstrand , Carl Bryant , Henrik Sjöland
CPC分类号： H03F1/523 , H03F1/565 , H03F3/2171 , H03F3/245 , H03F3/45188 , H03F2200/387 , H03F2200/391 , H03F2203/45318 , H03F2203/45332 , H03F2203/45396 , H03F2203/45631 , H03F2203/45638 , H03H7/38
摘要： A power amplifier circuit utilizes a cross-coupled tapped cascade topology together with a technique of applying an RF injection current into a wideband node to provide a single-stage power amplifier with improved PAE, output power, and gain over a wide RF band. The amplifier circuit comprises a cross-coupled cascade transistor unit comprising a pair of cross-coupled cascode transistors, a cross-coupled switching transistor unit comprising a pair of cross-coupled switching transistors, and an RF current generator. RF current generator generates a differential RF injection current, while switching transistor unit amplifies the injection current to generate an amplified injection current at the wideband node of the amplifier circuit and the cascode transistor unit further amplifies the injection current to generate the desired amplified signal at the output of the amplifier circuit. The output signal amplitude generally depends on the differential injection current and the supply voltage VDD applied to the power amplifier circuit.
摘要翻译： 功率放大器电路利用交叉耦合抽头级联拓扑以及将RF注入电流施加到宽带节点中以提供具有改进的PAE，输出功率和宽RF频带上的增益的单级功率放大器的技术。 放大器电路包括交叉耦合级联晶体管单元，其包括一对交叉耦合共源共栅晶体管，包括一对交叉耦合开关晶体管的交叉耦合开关晶体管单元和RF电流发生器。 RF电流发生器产生差分RF注入电流，而开关晶体管单元放大注入电流以在放大器电路的宽带节点处产生放大的注入电流，并且共源共栅晶体管单元进一步放大注入电流以在 输出放大电路。 输出信号幅度通常取决于差分注入电流和施加到功率放大器电路的电源电压VDD。
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公开(公告)号：US07863956B2
公开(公告)日：2011-01-04
申请号：US12246031
申请日：2008-10-06
申请人： Carl Bryant
发明人： Carl Bryant
IPC分类号： H03K3/017
CPC分类号： H04L25/4902 , H03F1/0205 , H03F3/19 , H03F3/217 , H03F3/245 , H03K3/017 , H03K7/08
摘要： Instead of reducing the pulse widths of all pulses simultaneously in order to reduce the output power of a switched-mode amplifier linearized by a pulse-width modulator, the width of every other (or every n-th) pulse is reduced. When the widths of the selected pulses have been reduced to zero, the amplifier's output power can be further reduced by selecting further pulses from the remaining non-zero-width pulses, and reducing the widths of those pulses. For example, after every other pulse of an original output signal has been removed, every other pulse of the remaining pulses can be reduced to obtain still lower amplifier output power. In this way, the number of pulses (and thus the number of switching transitions) is reduced for small signals, and therefore the amplifier's switching losses are reduced and efficiency is improved.
摘要翻译： 为了减少由脉冲宽度调制器线性化的开关式放大器的输出功率，不是同时降低所有脉冲的脉冲宽度，而是减少每隔一个（或第n个）脉冲的宽度。 当所选脉冲的宽度已经减小到零时，通过从剩余的非零宽度脉冲中选择另外的脉冲，并减小这些脉冲的宽度，可以进一步降低放大器的输出功率。 例如，在去除了原始输出信号的每隔一个脉冲之后，可以减少剩余脉冲的每隔一个脉冲以获得更低的放大器输出功率。 以这种方式，对于小信号，脉冲数（以及开关转换次数）减小，因此降低了放大器的开关损耗并提高了效率。
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公开(公告)号：US08179957B2
公开(公告)日：2012-05-15
申请号：US12135326
申请日：2008-06-09
申请人： Carl Bryant
发明人： Carl Bryant
CPC分类号： H03F3/217
摘要： Switched-mode amplifiers and devices having such amplifiers include quadrature pulse-width modulation that is based on cartesian (as opposed to polar) coordinates. Two sets of pulses that represent respective in-phase and quadrature components of a conventional cartesian-coordinates input signal can be combined such that the combined set of pulses can be provided to a switched-mode amplifier without nonlinear cartesian-to-polar transformation and its associated wider internal bandwidth and other problems.
摘要翻译： 具有这种放大器的开关型放大器和器件包括基于笛卡尔（与极坐标相反）的正交脉冲宽度调制。 可以组合表示常规笛卡尔坐标输入信号的相应同相和正交分量的两组脉冲，使得可以将组合的脉冲组提供给没有非笛卡尔 - 极坐标变换的开关模式放大器，并且其组合 相关的更宽的内部带宽等问题。
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公开(公告)号：US07760041B2
公开(公告)日：2010-07-20
申请号：US12127126
申请日：2008-05-27
申请人： Carl Bryant
发明人： Carl Bryant
IPC分类号： H03K7/08
CPC分类号： H03K7/08
摘要： Otherwise conventional pulse-width modulators (PWMs) generate signals that can be converted into other forms by reshapers, and thereby overcome many of the problems of conventional PWMs in applications that demand high performance, such as switched-mode amplifiers and radio-frequency transmitters in modern communication systems. With a suitable reshaper, a conventional PWM differential signal can be converted into a signal more typical of linear amplification with nonlinear components (LINC) and still retain low-frequency information, such as the information needed for linearization of a switched-mode amplifier. Apparatus and methods of transforming signals are disclosed.
摘要翻译： 否则传统的脉冲宽度调制器（PWM）可以通过重新生成可以转换为其他形式的信号，从而克服了需要高性能的应用中常规PWM的许多问题，例如开关式放大器和射频发射器 现代通信系统。 使用合适的整形器，传统的PWM差分信号可以转换为更典型的具有非线性分量（LINC）的线性放大的信号，并且仍然保留低频信息，例如开关模式放大器的线性化所需的信息。 公开了变换信号的装置和方法。
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公开(公告)号：US20100085097A1
公开(公告)日：2010-04-08
申请号：US12246031
申请日：2008-10-06
申请人： Carl Bryant
发明人： Carl Bryant
IPC分类号： H03K3/017
CPC分类号： H04L25/4902 , H03F1/0205 , H03F3/19 , H03F3/217 , H03F3/245 , H03K3/017 , H03K7/08
摘要： Instead of reducing the pulse widths of all pulses simultaneously in order to reduce the output power of a switched-mode amplifier linearized by a pulse-width modulator, the width of every other (or every n-th) pulse is reduced. When the widths of the selected pulses have been reduced to zero, the amplifier's output power can be further reduced by selecting further pulses from the remaining non-zero-width pulses, and reducing the widths of those pulses. For example, after every other pulse of an original output signal has been removed, every other pulse of the remaining pulses can be reduced to obtain still lower amplifier output power. In this way, the number of pulses (and thus the number of switching transitions) is reduced for small signals, and therefore the amplifier's switching losses are reduced and efficiency is improved.
摘要翻译： 为了减少由脉冲宽度调制器线性化的开关式放大器的输出功率，不是同时降低所有脉冲的脉冲宽度，而是减少每隔一个（或第n个）脉冲的宽度。 当所选脉冲的宽度已经减小到零时，通过从剩余的非零宽度脉冲中选择另外的脉冲，并减小这些脉冲的宽度，可以进一步降低放大器的输出功率。 例如，在去除了原始输出信号的每隔一个脉冲之后，可以减少剩余脉冲的每隔一个脉冲以获得更低的放大器输出功率。 以这种方式，对于小信号，脉冲数（以及开关转换次数）减小，因此降低了放大器的开关损耗并提高了效率。
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公开(公告)号：US20090146754A1
公开(公告)日：2009-06-11
申请号：US12127126
申请日：2008-05-27
申请人： Carl Bryant
发明人： Carl Bryant
IPC分类号： H03K7/08
CPC分类号： H03K7/08
摘要： Otherwise conventional pulse-width modulators (PWMs) generate signals that can be converted into other forms by reshapers, and thereby overcome many of the problems of conventional PWMs in applications that demand high performance, such as switched-mode amplifiers and radio-frequency transmitters in modern communication systems. With a suitable reshaper, a conventional PWM differential signal can be converted into a signal more typical of linear amplification with nonlinear components (LINC) and still retain low-frequency information, such as the information needed for linearization of a switched-mode amplifier. Apparatus and methods of transforming signals are disclosed.
摘要翻译： 否则传统的脉冲宽度调制器（PWM）可以通过重新生成可以转换为其他形式的信号，从而克服了需要高性能的应用中常规PWM的许多问题，例如开关式放大器和射频发射器 现代通信系统。 使用合适的整形器，传统的PWM差分信号可以转换为更典型的具有非线性分量（LINC）的线性放大的信号，并且仍然保留低频信息，例如开关模式放大器的线性化所需的信息。 公开了变换信号的装置和方法。
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公开(公告)号：US20090149151A1
公开(公告)日：2009-06-11
申请号：US12135326
申请日：2008-06-09
申请人： Carl Bryant
发明人： Carl Bryant
IPC分类号： H04B1/16
CPC分类号： H03F3/217
摘要： Switched-mode amplifiers and devices having such amplifiers include quadrature pulse-width modulation that is based on Cartesian (as opposed to polar) coordinates. Two sets of pulses that represent respective in-phase and quadrature components of a conventional cartesian-coordinates input signal can be combined such that the combined set of pulses can be provided to a switched-mode amplifier without nonlinear cartesian-to-polar transformation and its associated wider internal bandwidth and other problems.
摘要翻译： 具有这种放大器的开关型放大器和器件包括基于笛卡尔（与极坐标相反）的正交脉宽调制。 可以组合表示常规笛卡尔坐标输入信号的相应同相和正交分量的两组脉冲，使得可以将组合的脉冲组提供给没有非笛卡尔 - 极坐标变换的开关模式放大器，并且其组合 相关的更宽的内部带宽等问题。
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