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公开(公告)号：US20070026838A1
公开(公告)日：2007-02-01
申请号：US11191687
申请日：2005-07-27
申请人： Joseph Staudinger , Benjamin Gilsdorf , David Newman , George Norris , Gary Sadowniczak , Richard Sherman
发明人： Joseph Staudinger , Benjamin Gilsdorf , David Newman , George Norris , Gary Sadowniczak , Richard Sherman
IPC分类号： H04B1/16
CPC分类号： H04B1/0458 , H03F1/0205 , H03F1/0261 , H03F1/32 , H03F3/24 , H03F2200/105 , H03G3/3047 , H04B2001/0416
摘要： A radio frequency (“RF”) power amplifier circuit as described herein is configured to detect and measure an output load mismatch and to adjust the operating characteristics of the RF power amplifier to reduce output signal distortion. The circuit includes a directional RF signal coupler that obtains a coupled reflected RF signal that is indicative of the output load mismatch. The coupled reflected RF signal is processed to generate one or more bias control signals for the RF power amplifier. In operation, a mismatch condition will result in a measurable coupled reflected RF signal and a corresponding reduction in output power from the RF power amplifier. Ultimately, the output power control mechanism strives to maintain the RF power amplifier within a linear operating range.
摘要翻译： 如本文所述的射频（“RF”）功率放大器电路被配置为检测和测量输出负载失配并且调整RF功率放大器的工作特性以减小输出信号失真。 该电路包括定向RF信号耦合器，其获得指示输出负载不匹配的耦合的反射RF信号。 处理耦合的反射RF信号以产生用于RF功率放大器的一个或多个偏置控制信号。 在操作中，不匹配条件将导致可测量的耦合反射RF信号和来自RF功率放大器的输出功率的相应降低。 最终，输出功率控制机制致力于将RF功率放大器维持在线性工作范围内。
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2.发明授权Systems, apparatus, and methods for performing digital pre-distortion with feedback signal adjustment 有权用反馈信号调整进行数字预失真的系统，装置和方法公开(公告)号：US08068574B2
公开(公告)日：2011-11-29
申请号：US11755960
申请日：2007-05-31
申请人： George Norris , Joseph Staudinger , Jau-Horng Chen
发明人： George Norris , Joseph Staudinger , Jau-Horng Chen
IPC分类号： H04L7/00
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： In an embodiment, a digital pre-distortion apparatus processes an input signal to produce a pre-distorted signal, and processes the pre-distorted signal to produce a feedback signal. The apparatus also rotates an adjustment gain by a gain rotation angle to produce a rotated adjustment gain, where the gain rotation angle is based on a phase difference between the input signal and the feedback signal. The apparatus also applies the rotated adjustment gain to the feedback signal, which may result in rotation of the feedback signal into a target phase region.
摘要翻译： 在一个实施例中，数字预失真设备处理输入信号以产生预失真信号，并处理预失真信号以产生反馈信号。 该装置还使调节增益旋转增益旋转角度以产生旋转的调节增益，其中增益旋转角度基于输入信号和反馈信号之间的相位差。 该装置还将旋转的调节增益应用于反馈信号，这可能导致反馈信号转动到目标相位区域。
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公开(公告)号：US09209754B2
公开(公告)日：2015-12-08
申请号：US14095814
申请日：2013-12-03
CPC分类号： H03F1/56 , H03F1/0288 , H03F3/19 , H03F3/211 , H03F2200/387 , H03F2200/451 , H03F2203/21139 , H03F2203/21142
摘要： A device includes a Doherty amplifier having a carrier path and a peaking path. The Doherty amplifier includes a carrier amplifier configured to amplify a signal received from the carrier path and a peaking amplifier configured to amplify a signal received from the peaking path. The device includes a variable impedance coupled to an output of the Doherty amplifier, and a controller configured to set the variable impedance to a first impedance when an output power level of the Doherty amplifier is less than a threshold and to a second impedance when the output power level of the Doherty amplifier is above the threshold.
摘要翻译： 一种器件包括具有载体路径和峰化路径的Doherty放大器。 多赫蒂放大器包括被配置为放大从载波路径接收的信号的载波放大器和配置成放大从峰值路径接收的信号的峰值放大器。 该装置包括耦合到Doherty放大器的输出的可变阻抗，以及控制器，其被配置为当Doherty放大器的输出功率电平小于阈值时将可变阻抗设置为第一阻抗，并且当输出 Doherty放大器的功率电平高于阈值。
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公开(公告)号：US09118279B2
公开(公告)日：2015-08-25
申请号：US14045607
申请日：2013-10-03
CPC分类号： H03F1/0288 , H03F3/19 , H03F3/211 , H03F2200/451 , H03F2200/66 , H03F2203/21175 , H03G3/3036
摘要： A device includes an amplifier having a first path and a second path and a first variable attenuator connected to the first path. The device includes a controller coupled to the first variable attenuator. The controller is configured to determine a magnitude of an input signal to the amplifier. When the magnitude of the input signal is below a threshold, the controller is configured to set an attenuation of the first variable attenuator to a first attenuation value. When the magnitude of the input signal is above the threshold, the controller is configured to set the attenuation of the first variable attenuator to a second attenuation value. The second attenuation value is less than the first attenuation value.
摘要翻译： 一种装置包括具有第一路径和第二路径的放大器以及连接到第一路径的第一可变衰减器。 该装置包括耦合到第一可变衰减器的控制器。 控制器被配置为确定到放大器的输入信号的幅度。 当输入信号的幅度低于阈值时，控制器被配置为将第一可变衰减器的衰减设置为第一衰减值。 当输入信号的幅度高于阈值时，控制器被配置为将第一可变衰减器的衰减设置为第二衰减值。 第二衰减值小于第一衰减值。
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公开(公告)号：US20150155838A1
公开(公告)日：2015-06-04
申请号：US14095814
申请日：2013-12-03
CPC分类号： H03F1/56 , H03F1/0288 , H03F3/19 , H03F3/211 , H03F2200/387 , H03F2200/451 , H03F2203/21139 , H03F2203/21142
摘要： A device includes a Doherty amplifier having a carrier path and a peaking path. The Doherty amplifier includes a carrier amplifier configured to amplify a signal received from the carrier path and a peaking amplifier configured to amplify a signal received from the peaking path. The device includes a variable impedance coupled to an output of the Doherty amplifier, and a controller configured to set the variable impedance to a first impedance when an output power level of the Doherty amplifier is less than a threshold and to a second impedance when the output power level of the Doherty amplifier is above the threshold.
摘要翻译： 一种器件包括具有载体路径和峰化路径的Doherty放大器。 多赫蒂放大器包括被配置为放大从载波路径接收的信号的载波放大器和配置成放大从峰值路径接收的信号的峰值放大器。 该装置包括耦合到Doherty放大器的输出的可变阻抗，以及控制器，其被配置为当Doherty放大器的输出功率电平小于阈值时将可变阻抗设置为第一阻抗，并且当输出 Doherty放大器的功率电平高于阈值。
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公开(公告)号：US08988165B2
公开(公告)日：2015-03-24
申请号：US13360119
申请日：2012-01-27
申请人： Joseph Staudinger
发明人： Joseph Staudinger
CPC分类号： H03H7/20
摘要： A phase shifter with selectable phase shift and comprises a switchable phase shifting element that includes a first and second signal path coupled between an input and an output and providing a, respective, first and second phase shift for a signal coupled through the respective signal paths; a switch circuit for selecting between the first and second signal paths where the first and second signal paths and the switch circuit are configured to equalize the insertion loss for the first and second signal path, the phase shifter further including control circuit for controlling the switch circuit.
摘要翻译： 一种具有可选相移的移相器，包括可切换移相元件，其包括耦合在输入和输出之间的第一和第二信号路径，并为通过各个信号路径耦合的信号提供相应的第一和第二相移; 用于选择第一和第二信号路径之间的开关电路，其中第一和第二信号路径和开关电路被配置为均衡第一和第二信号路径的插入损耗，移相器还包括用于控制开关电路的控制电路 。
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7.发明授权公开(公告)号：US08674746B1
公开(公告)日：2014-03-18
申请号：US13653155
申请日：2012-10-16
申请人： Joseph Staudinger
发明人： Joseph Staudinger
IPC分类号： H03L5/00
CPC分类号： H03H7/25
摘要： Variable attenuators and methods of their operation are provided. A variable attenuator includes first and second variable resistance circuits and multiple additional resistors. The first variable resistance circuit has a plurality of current paths coupled in parallel between input and output terminals. A first current path includes two first resistors coupled in series between the input and output terminals, and a switch, which has a channel coupled across one of the two first resistors. The multiple additional resistors include second and third resistors. The second resistor is coupled between the input terminal and an intermediate node. The third resistor is coupled between the output terminal and the intermediate node. The second variable resistance circuit is coupled between the intermediate node and a voltage reference terminal. The level of attenuation provided by the attenuator is controlled by a switch control circuit based on a digital input.
摘要翻译： 提供了可变衰减器及其操作方法。 可变衰减器包括第一和第二可变电阻电路和多个附加电阻器。 第一可变电阻电路具有在输入和输出端子之间并联耦合的多个电流路径。 第一电流路径包括串联耦合在输入和输出端子之间的两个第一电阻器，以及具有耦合在两个第一电阻器中的一个上的沟道的开关。 多个附加电阻器包括第二和第三电阻器。 第二电阻耦合在输入端和中间节点之间。 第三电阻耦合在输出端和中间节点之间。 第二可变电阻电路耦合在中间节点和电压参考端子之间。 由衰减器提供的衰减电平由基于数字输入的开关控制电路来控制。
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8.发明申请SYSTEMS, APPARATUS, AND METHODS FOR PERFORMING DIGITAL PRE-DISTORTION WITH FEEDBACK SIGNAL ADJUSTMENT 有权用反馈信号调整进行数字预失真的系统，装置和方法公开(公告)号：US20080298500A1
公开(公告)日：2008-12-04
申请号：US11755960
申请日：2007-05-31
IPC分类号： H04L25/49
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： In an embodiment, a digital pre-distortion apparatus processes an input signal to produce a pre-distorted signal, and processes the pre-distorted signal to produce a feedback signal. The apparatus also rotates an adjustment gain by a gain rotation angle to produce a rotated adjustment gain, where the gain rotation angle is based on a phase difference between the input signal and the feedback signal. The apparatus also applies the rotated adjustment gain to the feedback signal, which may result in rotation of the feedback signal into a target phase region.
摘要翻译： 在一个实施例中，数字预失真设备处理输入信号以产生预失真信号，并处理预失真信号以产生反馈信号。 该装置还使调节增益旋转增益旋转角度以产生旋转的调节增益，其中增益旋转角度基于输入信号和反馈信号之间的相位差。 该装置还将旋转的调节增益应用于反馈信号，这可能导致反馈信号转动到目标相位区域。
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公开(公告)号：US07190150B2
公开(公告)日：2007-03-13
申请号：US11068272
申请日：2005-02-28
申请人： Jau H. Chen , Joseph Staudinger
发明人： Jau H. Chen , Joseph Staudinger
IPC分类号： G05F1/00
CPC分类号： H02M3/1584 , H02M3/157 , H03F1/0211 , H03F1/0227 , H03F2200/504
摘要： A DC-to-DC converter as described herein is suitable for use as a variable voltage supply for an RF power amplifier. The DC-to-DC converter includes a buck converter for providing relatively low voltage and current output, and a linear voltage regulator for providing relatively high voltage and current output. When operating in a buck converter mode, the DC-to-DC converter disables the linear voltage regulator, thus providing efficient low-level operation. When operating in a linear regulator mode, the DC-to-DC converter enables the linear voltage regulator while maintaining at least some current flow through the buck converter; this is accomplished by keeping an output transistor of the buck converter continuously on during the linear regulator mode. The DC-to-DC converter can transition between operating modes in a smooth manner that does not result in discontinuous voltage drops.
摘要翻译： 本文所述的DC-DC转换器适合用作RF功率放大器的可变电压源。 DC-DC转换器包括用于提供相对低电压和电流输出的降压转换器，以及用于提供相对高的电压和电流输出的线性电压调节器。 当在降压转换器模式下工作时，DC-DC转换器禁用线性稳压器，从而提供有效的低电平操作。 当以线性调节器模式工作时，DC-DC转换器使线性稳压器同时保持至少一些电流通过降压转换器; 这是通过在线性稳压器模式下保持降压转换器的输出晶体管持续导通而实现的。 DC-DC转换器可以以不平滑的方式在工作模式之间转换，不会导致不连续的电压降。
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公开(公告)号：US06833761B2
公开(公告)日：2004-12-21
申请号：US10376614
申请日：2003-02-28
IPC分类号： H03F314
CPC分类号： H03F3/601 , H01L24/73 , H01L2223/6644 , H01L2224/48091 , H01L2224/48137 , H03F3/602 , H01L2924/00014
摘要： A power amplifier device having a conductive structure overlying a dielectric layer. The conductive structure has a first conductive structure portion that is substantially electrically isolated from a second conductive structure portion. A first plurality of bond wires couple the first conductive structure portion to an amplifying device, while a second plurality of bond wires couple the second conductive structure portion to the amplifying device.
摘要翻译： 一种具有覆盖在介电层上的导电结构的功率放大器器件。 导电结构具有与第二导电结构部分基本上电绝缘的第一导电结构部分。 第一多个接合线将第一导电结构部分耦合到放大装置，而第二多个接合线将第二导电结构部分耦合到放大装置。
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