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    AMPLIFIER CIRCUIT AND METHOD FOR COMPENSATING AN OUTPUT SIGNAL PROVIDED AT AN OUTPUT OF THE AMPLIFIER CIRCUIT
    1.
    发明申请
    AMPLIFIER CIRCUIT AND METHOD FOR COMPENSATING AN OUTPUT SIGNAL PROVIDED AT AN OUTPUT OF THE AMPLIFIER CIRCUIT 审中-公开
    放大器电路以及用于补偿放大器电路的输出端上提供的输出信号的方法

    公开(公告)号：WO2018013022A1

    公开(公告)日：2018-01-18

    申请号：PCT/SE2016/050715

    申请日：2016-07-14

    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

    Inventor： HELLBERG, Richard

    IPC: H03F3/60 ,  H03F1/32

    CPC classification number: H03F3/605 ,  H03F1/3229 ,  H03F2200/192 ,  H03F2200/198 ,  H03F2200/204 ,  H03F2201/3212 ,  H03F2201/3221

    Abstract: An amplifier circuit (200) for compensating an output signal (231) provided at an output (206) of the amplifier circuit (200) comprises a cascade of sub-amplifiers (202 1-n ). Each sub-amplifier of the cascade contributes to a respective part of the output signal (231). The cascade of sub-amplifiers (2021-n) comprises an end sub-amplifier (202 n ) and at least one preliminary sub-amplifier (202 1 ). At least one error correction block (230) is coupled to apply feedforward error correction to an output of one of the at least one preliminary sub- amplifier (202 1 ).

    Abstract translation: 用于补偿在放大器电路（200）的输出（206）处提供的输出信号（231）的放大器电路（200）包括级联的子放大器（202 1- ñ）。 级联的每个子放大器对输出信号（231）的相应部分作出贡献。 级联的子放大器（2021-n）包括一个末端子放大器（202n）和至少一个初级子放大器（202r）。 至少一个纠错块（230）被耦合以将前馈误差校正应用于所述至少一个初级子放大器（202 1）中的一个的输出。

    AMPLIFICATION SYSTEM FOR INTERFERENCE SUPPRESSION IN WIRELESS COMMUNICATIONS
    3.
    发明申请
    AMPLIFICATION SYSTEM FOR INTERFERENCE SUPPRESSION IN WIRELESS COMMUNICATIONS 审中-公开
    无线通信干扰抑制放大系统

    公开(公告)号：WO2010088113A2

    公开(公告)日：2010-08-05

    申请号：PCT/US2010021491

    申请日：2010-01-20

    Applicant: JANG SEI-JOO

    Inventor： JANG SEI-JOO

    IPC: H03F1/32 ,  H03F3/24

    CPC classification number: H03F1/3241 ,  H03F1/0288 ,  H03F1/3229 ,  H03F3/24

    Abstract: An amplification system including a high gain amplifier, filter module and low gain amplifier. The high gain amplifier for receiving an input RF signal and processing the input RF signal to produce a first amplified signal while the high gain amplifier is operating near its saturation point. The filter module having at least one band pass filter to receive the first amplified signal and process the first amplified signal to remove unwanted characteristics of the first amplified signal to produce a processed first amplified signal. The low gain amplifier receiving the processed first amplified signal and processing the processed first amplified signal to produce a second amplified signal that has an increase in signal strength over the processed first amplified signal while the low gain amplifier is operating near its saturation point.

    Abstract translation: 一种放大系统，包括高增益放大器，滤波器模块和低增益放大器。 用于接收输入RF信号的高增益放大器，并且在高增益放大器在其饱和点附近运行时处理输入RF信号以产生第一放大信号。 所述滤波器模块具有至少一个带通滤波器，用于接收第一放大信号并处理第一放大信号以去除第一放大信号的不需要的特性以产生经处理的第一放大信号。 低增益放大器接收经处理的第一放大信号并处理经处理的第一放大信号，以产生第二放大信号，该信号在处理的第一放大信号上具有增加的信号强度，而低增益放大器在其饱和点附近工作。

    LINEARISED POWER AMPLIFIER
    4.
    发明申请
    LINEARISED POWER AMPLIFIER 审中-公开
    线性功率放大器

    公开(公告)号：WO2009081106A4

    公开(公告)日：2009-08-27

    申请号：PCT/GB2008004172

    申请日：2008-12-18

    Applicant: NORTEL NETWORKS LTD ,  Q FLAHERTY MARTIN ,  DOLMAN GRAHAM ,  MCGREGOR COLIN

    Inventor： Q FLAHERTY MARTIN ,  DOLMAN GRAHAM ,  MCGREGOR COLIN

    IPC: H03F1/32

    CPC classification number: H03F1/3229 ,  H03F1/3247

    Abstract: A linearised power amplifier including a predistorter and a feedforward circuit is described. By using both a predistorter and a feedforward cancellation system the linearisation of the amplifier is increased. The accuracy of the amplified signal may be further improved by training the predistorter using the error signal produced by the feedforward cancellation system. Improved accuracy in the lineariser results in a reduction in the power requirement of the error amplifier and a relaxation in the phase, amplitude and delay accuracy of the feedforward loop.

    Abstract translation: 描述了包括预失真器和前馈电路的线性化功率放大器。 通过使用预失真器和前馈消除系统，放大器的线性化会增加。 通过使用由前馈消除系统产生的误差信号来训练预失真器，可以进一步提高放大信号的准确度。 线性化器中提高的精度导致误差放大器的功率要求降低以及前馈回路的相位，幅度和延迟精度的松弛。

    REDUCED DISTORTION RADIO FREQUENCY AMPLIFIERS
    5.
    发明申请
    REDUCED DISTORTION RADIO FREQUENCY AMPLIFIERS 审中-公开
    减少失真无线电频率放大器

    公开(公告)号：WO2009014740A2

    公开(公告)日：2009-01-29

    申请号：PCT/US2008/009020

    申请日：2008-07-25

    Applicant: PULSEWAVE RF, INC.

    Inventor： WILLIAMS, Bertrand, Jeffery ,  MERECHUK, Kelly ,  JOHNSON, Thomas ,  HUSLIG, Dan

    IPC: H03F3/20

    CPC classification number: H03F3/19 ,  H03F1/32 ,  H03F1/3229

    Abstract: A radio frequency power amplifier system includes a power amplifier coupled to an input signal and configured to provide an output signal at a radio frequency; a signal cancellation system coupled to the input signal, and a first feedback signal, which is based on the output signal, and configured to provide an error signal with a reduced level of the input signal; and a feedback control system coupled to the error signal and configured to provide a correction signal that is used to reduce distortion in the output signal. A corresponding method includes amplifying in a forward path an input signal to provide an output signal at a radio frequency; combining a reference and a first feedback signal to provide an error signal with a reduced level of the input signal; providing, responsive to the error signal and in a feedback control system that is separate from the forward path, a correction signal; and then using the correction signal to reduce distortion in the output signal.

    Abstract translation: 射频功率放大器系统包括耦合到输入信号并被配置为提供射频输出信号的功率放大器; 耦合到所述输入信号的信号消除系统，以及基于所述输出信号的第一反馈信号，所述第一反馈信号被配置为提供具有降低的所述输入信号的电平的误差信号; 以及反馈控制系统，其耦合到所述误差信号并且被配置为提供用于减少所述输出信号中的失真的校正信号。 相应的方法包括在正向路径中放大输入信号以提供射频输出信号; 组合参考和第一反馈信号以提供具有降低的输入信号电平的误差信号; 响应于误差信号并且在与正向路径分离的反馈控制系统中提供校正信号; 然后使用校正信号来减少输出信号的失真。

    LOW-NOISE SOURCE
    6.
    发明申请
    LOW-NOISE SOURCE 审中-公开
    低噪声源

    公开(公告)号：WO2008014503A3

    公开(公告)日：2008-05-29

    申请号：PCT/US2007074675

    申请日：2007-07-28

    Applicant: OMNIPHASE RES LAB INC ,  RZYSKI EUGENE ,  WANGSNESS TODD

    Inventor： RZYSKI EUGENE ,  WANGSNESS TODD

    IPC: G01R31/28

    CPC classification number: H03F1/3229 ,  G01R29/26 ,  H03F1/26 ,  H03F1/3223 ,  H03F2200/372 ,  H03F2201/3212

    Abstract: In one embodiment, a low-noise source includes: a signal source; a variable amplifier adapted to amplify an output signal from the signal source to provide an amplified signal; a feed-forward amplifier adapted to amplify the amplified signal to provide an amplified output signal; a phase noise measurement system adapted to provide a first feedback signal responsive to phase noise in the amplified output signal; and a processor adapted to control the amplification provided by the variable amplifier responsive to the feedback signal so as to minimize phase noise in the amplified output signal.

    Abstract translation: 在一个实施例中，低噪声源包括：信号源; 可变放大器，其适于放大来自所述信号源的输出信号以提供放大的信号; 前馈放大器，适于放大放大的信号以提供放大的输出信号; 相位噪声测量系统，其适于提供响应于放大的输出信号中的相位噪声的第一反馈信号; 以及处理器，其适于响应于所述反馈信号来控制由所述可变放大器提供的放大，以使放大的输出信号中的相位噪声最小化。

    ENHANCED EFFICIENCY FEED FOWARD POWER AMPLIFIER WITH DELAY MISMATCHED ERROR CANCELLATION LOOP
    7.
    发明申请
    ENHANCED EFFICIENCY FEED FOWARD POWER AMPLIFIER WITH DELAY MISMATCHED ERROR CANCELLATION LOOP 审中-公开
    增强效率输入功率放大器与延迟误差错误消除环路

    公开(公告)号：WO2007106337A2

    公开(公告)日：2007-09-20

    申请号：PCT/US2007/005480

    申请日：2007-03-02

    Applicant: POWERWAVE TECHNOLOGIES, INC. ,  ARBAB, Ezmarai ,  GURVICH, Mark ,  HUNTON, Matthew, J. ,  RABINOVICH, Alexander ,  VASSILAKIS, Bill

    Inventor： ARBAB, Ezmarai ,  GURVICH, Mark ,  HUNTON, Matthew, J. ,  RABINOVICH, Alexander ,  VASSILAKIS, Bill

    IPC: H03F1/26

    CPC classification number: H03F1/32 ,  H03F1/3223 ,  H03F1/3229 ,  H03F1/3235 ,  H03F2200/204 ,  H03F2200/321 ,  H03F2201/3212

    Abstract: A delay mismatched feed forward power amplifier is disclosed. Loop 1 includes a main amplifier (215) and is used to derive a carrier cancelled sample of the main amplifier output. Loop 2 includes an error amplifier (400) used to amplify the carrier cancelled signal derived from Loop 1 operation in order to cancel distortion products generated due to the nonlinear nature of the main amplifier. Loop 2 also utilizes a very short Loop 2 delay line (225). A significant efficiency gain is provided due to reduced output power losses associated with the Loop 2 delay line (225). Lower output losses also results in lower distortion levels produced by the main amplifier (215). This, in turn, reduces the size and performance requirements placed on the error amplifier (400). A smaller and more efficient error amplifier (400) is employed resulting in further amplifier system efficiency improvement. The delay mismatch is compensated by a third control loop, a special adaptive control algorithm or a combination thereof.

    Abstract translation: 公开了延迟失配的前馈功率放大器。 环路1包括主放大器（215），并用于导出主放大器输出的载波消除采样。 环路2包括用于放大从环路1操作导出的载波消除信号的误差放大器（400），以便消除由于主放大器的非线性特性而产生的失真产物。 环路2还使用非常短的环路2延迟线（225）。 由于与环路2延迟线（225）相关联的降低的输出功率损耗，提供了显着的效率增益。 较低的输出损耗也导致主放大器（215）产生的较低的失真电平。 这又降低了放置在误差放大器（400）上的尺寸和性能要求。 使用更小且更有效的误差放大器（400），导致进一步的放大器系统效率提高。 延迟失配由第三控制回路，特殊自适应控制算法或其组合补偿。

    ENHANCED EFFICIENCY FEED FORWARD POWER AMPLIFIER UTILIZING REDUCED CANCELLATION BANDWIDTH AND SMALL ERROR AMPLIFIER
    9.
    发明申请
    ENHANCED EFFICIENCY FEED FORWARD POWER AMPLIFIER UTILIZING REDUCED CANCELLATION BANDWIDTH AND SMALL ERROR AMPLIFIER 审中-公开
    增强效率的前馈功率放大器利用减少的取消带宽和小错误放大器

    公开(公告)号：WO2004075397A2

    公开(公告)日：2004-09-02

    申请号：PCT/US2004003847

    申请日：2004-02-11

    Applicant: POWERWAVE TECHNOLOGIES INC ,  GURVICH MARK ,  VASSILAKIS BILL ,  ARBAB EZMARAI ,  RABINOVICH ALEXANDER

    Inventor： GURVICH MARK ,  VASSILAKIS BILL ,  ARBAB EZMARAI ,  RABINOVICH ALEXANDER

    IPC: H03F1/32 ,  H03F

    CPC classification number: H03F1/3229 ,  H03F1/3247

    Abstract: A feed forward power amplifier is disclosed which utilizes three signal cancellation loops. Loop 1 includes a main amplifier (215) and is used to derive a carrier cancelled sample of the main amplifier output. Loop 2 includes an error amplifier (400) used to amplify the carrier cancelled signal derived from Loop 1 operation in order to cancel distortion products generated due to the nonlinear nature of the main amplifier (215). Loop 2 also utilizes a very short Loop 2 delay line (225). A significant efficiency gain is provided due to reduced output power losses associated with the Loop 2 delay line (225). Lower output losses also results in lower distortion levels produced by the main amplifier (2.15). This, in turn, reduces the size and performance requirements placed on the error amplifier (400). A smaller and more efficient error amplifier (400) is employed resulting in further amplifier system efficiency improvement. A spurious signal detector (805) for out-of-band distortion detection and an associated microcontroller (810) for Loop 1 and Loop 2 control are also provided. A third signal cancellation loop is utilized to sample the amplifier output and reduce the carrier level of the signals sampled at the output of the amplifier before providing the sampled output to the spurious signal detector (805). By significantly reducing the carrier power level relative to distortion power levels a cost effective spurious signal detector (805) can be utilized. This also provides a faster conversion time in Loop 2 cancellation and enhanced cancellation of out-of-band distortion products due to a greater useful dynamic range available for the DSP (817) employed in the spurious signal detector (805).

    Abstract translation: 公开了一种利用三个信号消除环路的前馈功率放大器。 环路1包括主放大器（215），并用于导出主放大器输出的载波消除采样。 环路2包括用于放大从环路1操作导出的载波消除信号的误差放大器（400），以便消除由于主放大器（215）的非线性特性而产生的失真产物。 环路2还使用非常短的环路2延迟线（225）。 由于与环路2延迟线（225）相关联的降低的输出功率损耗，提供了显着的效率增益。 较低的输出损耗也会导致主放大器产生的失真电平较低（2.15）。 这又降低了放置在误差放大器（400）上的尺寸和性能要求。 使用更小且更有效的误差放大器（400），导致进一步的放大器系统效率提高。 还提供了用于带外失真检测的杂散信号检测器（805）和用于环路1和环路2控制的相关联的微控制器（810）。 在将采样输出提供给寄生信号检测器（805）之前，利用第三信号消除环路对放大器输出进行采样并降低在放大器的输出处采样的信号的载波电平。 通过相对于失真功率电平显着降低载波功率电平，可以利用成本有效的寄生信号检测器（805）。 由于可用于寄生信号检测器（805）中使用的DSP（817）的更大的有用动态范围，这也提供了循环2消除中的更快的转换时间和带外失真产物的增强的消除。

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