公开(公告)号：US20170264250A1

公开(公告)日：2017-09-14

申请号：US15068179

申请日：2016-03-11

Applicant: Intel Corporation

Inventor： Jong Seok Park ,  Yanjie J. Wang ,  Stefano Pellerano ,  Christopher D. Hull

IPC: H03F1/32 ,  H03F3/193 ,  H04L27/34 ,  H03F3/21 ,  H03F3/68 ,  H04B1/04 ,  H03F1/56 ,  H03F3/24

CPC classification number: H03F1/3205 ,  H03F1/0261 ,  H03F1/0277 ,  H03F1/223 ,  H03F1/565 ,  H03F3/189 ,  H03F3/193 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/45188 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/162 ,  H03F2200/18 ,  H03F2200/387 ,  H03F2200/423 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2201/3203 ,  H03F2203/21139 ,  H03F2203/21142 ,  H03F2203/21178 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7236 ,  H04B1/04 ,  H04B2001/0408 ,  H04L27/34

Abstract: A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. A output passive network can further generate a flat-phase response between dual resonances of operation.

公开(公告)号：US09537456B2

公开(公告)日：2017-01-03

申请号：US14920031

申请日：2015-10-22

Applicant: Eta Devices, Inc.

Inventor： Mark A. Briffa ,  Joel L. Dawson ,  David J. Perreault ,  Oguzhan Uyar

IPC: H04B1/04 ,  H03F1/02 ,  H03F3/68 ,  H03F3/21 ,  H03F3/19 ,  H03F3/24 ,  H03G3/30

CPC classification number: H03F1/0222 ,  H03F1/02 ,  H03F1/0227 ,  H03F1/3282 ,  H03F3/19 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2201/3203 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03G3/3042 ,  H04B1/0483 ,  H04B2001/045

Abstract: A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.

Abstract translation: 射频（RF）放大系统或发射器包括一个或多个功率放大器和被配置为调整一个或多个功率放大器的RF输入信号的幅度和相位以及施加到一个或多个功率放大器的电源电压的控制器。 该系统可以包括单个数字到RF调制器和用于驱动多个功率放大器的功率分配器。 还可以提供功率组合器来组合功率放大器的输出。 在至少一个实现中，可以使用一个或多个功率放大器的RF输入信号的幅度调整来提供发射功率控制和/或功率回馈。

公开(公告)号：US09467103B2

公开(公告)日：2016-10-11

申请号：US14140309

申请日：2013-12-24

Applicant: The Aerospace Corporation

Inventor： Adam Wayne Bushmaker

IPC: H03F1/26 ,  H03F1/32 ,  H03F3/193 ,  H03F1/02

CPC classification number: H03F3/193 ,  H03F1/0272 ,  H03F1/3205 ,  H03F2200/294 ,  H03F2200/504 ,  H03F2200/516 ,  H03F2201/3203 ,  H03F2201/3215

Abstract: A system linearization assembly generally includes a delay device that receives an input signal from a signal source and delays the input signal by a predetermined delay function. An attenuation device receives a modified output signal from a signal modifying device, wherein the output signal is based on the input signal and includes a time varying parameter representing a plurality of frequency components including at least one component caused by non-linear intermodulation distortion. The attenuation device attenuates the output signal by a factor that is equal to at least one parameter of the modifying device. A computing device compares the attenuated output signal with the delayed input signal to obtain a resultant signal that includes the component caused by non-linear intermodulation distortion. A detection device detects at least one parameter of the resultant signal. Based on the detected parameter, a controller facilitates a modification of the component.

Abstract translation: 系统线性化组件通常包括延迟装置，其接收来自信号源的输入信号并且将输入信号延迟预定的延迟功能。 衰减装置从信号修改装置接收经修改的输出信号，其中所述输出信号基于所述输入信号，并且包括表示包括由非线性互调失真引起的至少一个分量的多个频率分量的时变参数。 衰减装置以等于修改装置的至少一个参数的因子衰减输出信号。 计算装置将衰减的输出信号与延迟的输入信号进行比较，以获得包括由非线性互调失真引起的分量的合成信号。 检测装置检测所得信号的至少一个参数。 基于检测到的参数，控制器便于修改组件。

公开(公告)号：US20150163079A1

公开(公告)日：2015-06-11

申请号：US14595619

申请日：2015-01-13

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Mark Edward Rollins

IPC: H04L25/08 ,  H04L27/36

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3252 ,  H03F1/3294 ,  H03F3/24 ,  H03F2200/111 ,  H03F2201/3203 ,  H04B2001/0425 ,  H04L25/08 ,  H04L27/368

Abstract: Systems and methods for radio frequency digital predistortion in a multi-band transmitter are disclosed. In one embodiment, the multi-band transmitter includes a digital upconversion system configured to digitally upconvert digital input signals to provide digital radio frequency signals. Each digital input signal and thus each digital radio frequency signal corresponds to a different band of a multi-band transmit signal to be transmitted by the multi-band transmitter. The multi-band transmitter also includes a radio frequency digital predistortion system configured to digitally predistort the digital radio frequency signals to provide predistorted digital radio frequency signals, and a combiner configured to combine the predistorted digital radio frequency signals to provide a multi-band predistorted digital radio frequency signal.

Abstract translation: 公开了一种用于多频带发射机中的射频数字预失真的系统和方法。 在一个实施例中，多频带发射机包括数字上变频系统，其被配置为数字上变频数字输入信号以提供数字射频信号。 每个数字输入信号和每个数字射频信号对应于要由多频带发射机发射的多频带发射信号的不同频带。 该多波段发射机还包括一个射频数字预失真系统，配置为数字预失真数字射频信号以提供预失真的数字射频信号，以及组合器，被配置为组合预失真的数字射频信号以提供多波段预失真的数字 射频信号

公开(公告)号：US20140348263A1

公开(公告)日：2014-11-27

申请号：US13902023

申请日：2013-05-24

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Mark Edward Rollins

IPC: H04L25/08

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3252 ,  H03F1/3294 ,  H03F3/24 ,  H03F2200/111 ,  H03F2201/3203 ,  H04B2001/0425 ,  H04L25/08 ,  H04L27/368

Abstract: Systems and methods for radio frequency digital predistortion in a multi-band transmitter are disclosed. In one embodiment, the multi-band transmitter includes a digital upconversion system configured to digitally upconvert digital input signals to provide digital radio frequency signals. Each digital input signal and thus each digital radio frequency signal corresponds to a different band of a multi-band transmit signal to be transmitted by the multi-band transmitter. The multi-band transmitter also includes a radio frequency digital predistortion system configured to digitally predistort the digital radio frequency signals to provide predistorted digital radio frequency signals, and a combiner configured to combine the predistorted digital radio frequency signals to provide a multi-band predistorted digital radio frequency signal.

Abstract translation: 公开了一种用于多频带发射机中的射频数字预失真的系统和方法。 在一个实施例中，多频带发射机包括数字上变频系统，其被配置为数字上变频数字输入信号以提供数字射频信号。 每个数字输入信号和每个数字射频信号对应于要由多频带发射机发射的多频带发射信号的不同频带。 该多波段发射机还包括一个射频数字预失真系统，配置为数字预失真数字射频信号以提供预失真的数字射频信号，以及组合器，被配置为组合预失真的数字射频信号以提供多波段预失真的数字 射频信号

公开(公告)号：US20140146919A1

公开(公告)日：2014-05-29

申请号：US14085599

申请日：2013-11-20

Applicant: Aviacomm Inc.

Inventor： Tao Li ,  Hans Wang ,  Binglei Zhang ,  Shih Hsiung Mo

IPC: H04L27/26

CPC classification number: H04L27/2614 ,  H03F1/0266 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/435 ,  H03F2201/3203 ,  H04L27/2627

Abstract: One embodiment of the present invention provides a system for controlling operations of an amplifier in a wireless transmitter. During operation, the system receives a baseband signal to be transmitted, and dynamically switches an operation mode of the amplifier between a high power back-off mode having a first power back-off factor and a normal mode having a second power back-off factor based on a level of the baseband signal.

Abstract translation: 本发明的一个实施例提供一种用于控制无线发射机中放大器的操作的系统。 在操作期间，系统接收要发送的基带信号，并且在具有第一功率回退系数的高功率退避模式和具有第二功率回退系数的正常模式之间动态地切换放大器的操作模式 基于基带信号的电平。

公开(公告)号：US07535974B1

公开(公告)日：2009-05-19

申请号：US12148765

申请日：2008-04-22

Applicant: Kedar Shirali

Inventor： Kedar Shirali

IPC: H04L25/03

CPC classification number: H04L27/368 ,  H03F1/3247 ,  H03F1/3282 ,  H03F3/24 ,  H03F2200/207 ,  H03F2201/3203

Abstract: A system configured to linearize a response of a nonlinear amplifier comprises a buffer to store a plurality of samples of an input signal to be amplified by the nonlinear amplifier. A self-receiver generates samples of an output signal of the nonlinear amplifier. A synchronization unit matches each sample of the output signal to a corresponding sample of the input signal stored in the buffer. A predistortion correction circuit generates a distortion correction function to be applied to the input signal to linearize the response of the nonlinear amplifier. The distortion correction function is generated based on a comparison of each matched sample of the output signal and corresponding sample of the input signal.

Abstract translation: 被配置为线性化非线性放大器的响应的系统包括用于存储要由非线性放大器放大的输入信号的多个采样的缓冲器。 自我接收器产生非线性放大器的输出信号的采样。 同步单元将输出信号的每个样本与存储在缓冲器中的输入信号的对应样本相匹配。 预失真校正电路产生应用于输入信号的失真校正功能，以线性化非线性放大器的响应。 基于输出信号的每个匹配样本和输入信号的相应样本的比较来生成失真校正功能。

公开(公告)号：US09768732B2

公开(公告)日：2017-09-19

申请号：US15354170

申请日：2016-11-17

Applicant: Eta Devices, Inc.

Inventor： Mark A. Briffa ,  Joel L. Dawson ,  David J. Perreault ,  Oguzhan Uyar

IPC: H04B1/04 ,  H03F1/02 ,  H03F3/68 ,  H03F3/19 ,  H03F3/21 ,  H03F3/24 ,  H03G3/30 ,  H03F1/32

CPC classification number: H03F1/0222 ,  H03F1/02 ,  H03F1/0227 ,  H03F1/3282 ,  H03F3/19 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2201/3203 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03G3/3042 ,  H04B1/0483 ,  H04B2001/045

Abstract: A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.

公开(公告)号：US20170070196A1

公开(公告)日：2017-03-09

申请号：US14849527

申请日：2015-09-09

Applicant: Hughes Network Systems, LLC

Inventor： BASSEL F. BEIDAS

IPC: H03F1/32 ,  H04B1/04 ,  H03F3/21

CPC classification number: H03F1/3241 ,  H03F1/3258 ,  H03F3/211 ,  H03F3/24 ,  H03F2201/3203 ,  H03F2201/3231 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B2001/0408 ,  H04L27/368

Abstract: A single or multistage signal predistorter includes an input coupled to receive an information signal comprising input samples and an output coupled to the high power amplifier, the signal predistorter configured to receive an input sample, generate a distortion sample based on an estimate of nonlinearity of the high power amplifier at an operating saturation level, modify the input sample with a correction term to generate a predistortion signal, wherein the correction term is proportional to the distortion sample, and further wherein the predistortion signal comprises the information signal modified to account for nonlinearities in the high power amplifier.

Abstract translation: 单级或多级信号预失真器包括耦合以接收包括输入样本和耦合到高功率放大器的输出的信息信号的输入，该信号预失真器被配置为接收输入样本，基于所估计的非线性估计来产生失真样本 在功率饱和电平下的高功率放大器，用校正项修改输入采样以产生预失真信号，其中所述校正项与所述失真采样成比例，并且其中所述预失真信号包括被修改以消除非线性的信息信号 大功率放大器。

公开(公告)号：US20160276985A1

公开(公告)日：2016-09-22

申请号：US15029506

申请日：2013-10-16

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： Christian FAGER ,  Mustafa ÖZEN

IPC: H03F1/32 ,  H03F3/19 ,  H03F3/21 ,  H03F1/02

CPC classification number: H03F1/32 ,  H03F1/0288 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/451 ,  H03F2201/3203 ,  H03F2203/21142

Abstract: An amplifier arrangement for optimising efficiency at a peak power level and a back-off power level comprises a main power amplifier provided in a main branch for receiving a first signal, the main power amplifier being configured to operate in a class-B mode of operation. An auxiliary power amplifier is provided in an auxiliary branch for receiving a second signal, the auxiliary power amplifier being configured to operate in a class-C mode of operation. The main power amplifier and the auxiliary power amplifier are substantially matched in size. The first signal and the second signal have a phase offset value θ that is selected in relation to a particular back-off power level γ of operation, wherein 0

Abstract translation: 一种用于在峰值功率电平和退避功率电平下优化效率的放大器装置包括设置在主分支中用于接收第一信号的主功率放大器，所述主功率放大器被配置为在B类操作模式中操作 。 辅助功率放大器设置在辅助支路中用于接收第二信号，辅助功率放大器被配置为在C类工作模式下工作。 主功率放大器和辅助功率放大器的尺寸基本匹配。 第一信号和第二信号具有相对于操作的特定退避功率电平γ选择的相位偏移值θ，其中0 <θ<180°。 组合网络被配置为将主放大器和辅助放大器的输出信号耦合到放大器装置的输出节点，使得辅助功率放大器负载的输出调制主功率放大器的输出。 基于所选择的相移值θ和放大器布置为了效率而优化的相关退避功率电平γ导出组合网络的电路元件值。