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31.发明申请公开(公告)号：US20170111188A1
公开(公告)日：2017-04-20
申请号：US15390139
申请日：2016-12-23
Applicant: MediaTek Singapore Pte. Ltd.
Inventor： Zhiming Deng , Chun-Hsien Peng
CPC classification number: H04L25/0328 , H03F1/3205 , H03F1/3241 , H03F1/3247 , H03F3/19 , H03F3/2175 , H03F3/245 , H03F3/45179 , H03F2200/451 , H03F2201/3227 , H03F2201/3233 , H03F2203/21193 , H03F2203/45394 , H04B1/0475 , H04B17/13 , H04B2001/0425 , H04L25/03343 , H04L27/367
Abstract: A power amplifier cell includes a first input arranged to receive an in-phase control signal, a second input arranged to receive a quadrature control signal, an input stage arranged to output a drive signal based at least partly on the received in-phase and quadrature control signals, and an output stage arranged to receive at an input thereof the drive signal output by the input stage, and to generate an output signal for the power amplifier cell in response to the received drive signal.
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公开(公告)号：US09397619B2
公开(公告)日：2016-07-19
申请号：US14490200
申请日：2014-09-18
Applicant: FUJITSU LIMITED
Inventor： Alexander Nikolaevich Lozhkin
CPC classification number: H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2200/451 , H03F2201/3227
Abstract: A predistorter gives an input signal inputted to a power amplifier distortion corresponding to a compensation coefficient. A band limiter limits components in a second frequency band other than a first frequency band of a feedback signal fed back from the power amplifier, and distorts components in the first frequency band according to the limited components in the second frequency band. A learner updates the compensation coefficient on the basis of the distorted feedback signal.
Abstract translation: 预失真器给出输入到对应于补偿系数的功率放大器失真的输入信号。 频带限制器限制除了从功率放大器反馈的反馈信号的第一频带之外的第二频带中的分量，并且根据第二频带中的有限分量来扭曲第一频带中的分量。 学习者根据失真的反馈信号更新补偿系数。
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公开(公告)号：US20160191146A1
公开(公告)日：2016-06-30
申请号：US14910799
申请日：2014-08-06
Applicant: UNIVERSITY OF SURREY
Inventor： Ahmed Abouelenin
CPC classification number: H04B7/18513 , H03F1/0222 , H03F1/3247 , H03F2200/451 , H03F2201/3215 , H03F2201/3227 , H04B1/04 , H04B1/0475 , H04B1/62 , H04B2001/0425 , Y02D70/1262 , Y02D70/446
Abstract: A signal transmission system for a satellite comprises means (31) for producing a signal to be transmitted; a first signal channel (37) which includes a first digital pre-distortion device (32) for applying pre-distortion to the signal; a second signal channel (38) for processing an envelope of the signal, which includes a second digital pre-distortion device (35) for applying pre-distortion to the envelope of the signal; and output means (34) for transmitting the signal.
Abstract translation: 一种用于卫星的信号传输系统包括用于产生待传输信号的装置（31） 第一信号通道（37），其包括用于向所述信号施加预失真的第一数字预失真装置（32） 用于处理所述信号的包络的第二信号信道（38），所述第二信号信道包括用于向所述信号的包络施加预失真的第二数字预失真装置（35） 以及用于发送信号的输出装置（34）。
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34.发明授权Power amplifier apparatus, transmitter apparatus, and method of controlling the power amplifier apparatus 有权功率放大器装置，发射机装置和控制功率放大器装置的方法公开(公告)号：US09294047B2
公开(公告)日：2016-03-22
申请号：US14281692
申请日：2014-05-19
Applicant: FUJITSU LIMITED
Inventor： Toshio Kawasaki , Hiroyoshi Ishikawa , Kazuo Nagatani , Yuichi Utsunomiya , Alexander Nikolaevich Lozhkin , Hajime Hamada
CPC classification number: H03F1/3247 , H03F3/21 , H03F3/24 , H03F2201/3227 , H03F2203/21
Abstract: A power amplifier apparatus includes an amplifier configured to amplify an input signal converted into an analog signal, a distortion compensator circuitry configured to perform a pre-distortion process to an input signal at a second sampling rate higher than a first sampling rate at which the input signal is converted into an analog signal, a remover configured to remove a frequency component exceeding a frequency band corresponding to the first sampling rate from the input signal subjected to the pre-distortion process, a first rate converter configured to convert a sampling rate of the input signal from which the frequency component is removed from the second sampling rate to the first sampling rate, and a first signal converter configured to convert the input signal the sampling rate of which is converted into an analog signal at the first sampling rate to supply the input signal converted into the analog signal to the amplifier.
Abstract translation: 功率放大器装置包括：放大器，被配置为放大转换成模拟信号的输入信号;失真补偿器电路，被配置为以高于所述输入的第一采样率的第二采样率对输入信号执行预失真处理 信号被转换为模拟信号，去除器被配置为从经过预失真处理的输入信号中去除超过与第一采样率相对应的频带的频率分量;第一速率转换器，被配置为将采样速率 将频率分量从第二采样率移除到第一采样率的第一信号转换器;以及第一信号转换器，其被配置为将其采样速率被转换为模拟信号的输入信号以第一采样率转换以提供 输入信号转换成模拟信号到放大器。
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公开(公告)号：US09154085B2
公开(公告)日：2015-10-06
申请号：US14314906
申请日：2014-06-25
Applicant: Aviat U.S., Inc.
Inventor： Frank Matsumoto , Youming Qin
CPC classification number: H03F1/3247 , H03F1/56 , H03F3/211 , H03F3/24 , H03F2200/204 , H03F2200/207 , H03F2200/387 , H03F2200/405 , H03F2200/408 , H03F2200/411 , H03F2201/3227
Abstract: An exemplary system comprises a linearizer, a power amplifier, and a feedback block. The linearizer may be configured to use a predistortion control signal to add predistortion to a receive signal to generate a predistorted signal. The power amplifier may be configured to amplify power of the predistorted signal to generate a first amplified signal. The power amplifier may also add high side and low side amplifier distortion to the predistorted signal. The high side and low side amplifier distortion may cancel at least a portion of the predistortion. The feedback block may be configured to capture a feedback signal based on a previous amplified signal from the power amplifier, to determine high side and low side distortion of the captured feedback signal, and to generate the predistortion control signal based on the determined high side and low side distortion.
Abstract translation: 示例性系统包括线性化器，功率放大器和反馈块。 线性化器可以被配置为使用预失真控制信号来将预失真添加到接收信号以产生预失真信号。 功率放大器可以被配置为放大预失真信号的功率以产生第一放大信号。 功率放大器还可以向预失真信号增加高侧和低侧放大器失真。 高侧和低侧放大器失真可能会取消预失真的至少一部分。 反馈块可以被配置为基于来自功率放大器的先前放大的信号捕获反馈信号，以确定所捕获的反馈信号的高侧和低侧失真，以及基于所确定的高侧产生预失真控制信号，以及 低端失真。
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Patent Agency Ranking
36.发明授权公开(公告)号：US09148096B2
公开(公告)日：2015-09-29
申请号：US14377959
申请日：2012-02-22
Applicant: Tao Huang , Changjiang Yang , Xiang Zeng
Inventor： Tao Huang , Changjiang Yang , Xiang Zeng
CPC classification number: H03F3/19 , H03F1/02 , H03F1/3247 , H03F3/24 , H03F2200/451 , H03F2201/3215 , H03F2201/3227 , H04B2201/70706 , H04L27/2623 , H04L27/368
Abstract: A method for controlling an input signal of a power amplifier is provided. The method comprise applying CFR to the input signal to obtain a processed input signal; determining a minimum CFR threshold; comparing the peak power of the power amplifier and an allowable peak power; and if the peak power is below the allowable peak power, determining a final CFR threshold by increasing the minimum CFR threshold, or if the peak power is not below the allowable peak power, reducing the average output power until peak power reaches the allowable peak power.
Abstract translation: 提供一种用于控制功率放大器的输入信号的方法。 该方法包括将CFR应用于输入信号以获得经处理的输入信号; 确定最小CFR阈值; 比较功率放大器的峰值功率和允许的峰值功率; 并且如果峰值功率低于容许峰值功率，则通过增加最小CFR阈值来确定最终CFR阈值，或者如果峰值功率不低于允许峰值功率，则降低平均输出功率，直到峰值功率达到允许峰值功率 。
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37.发明授权公开(公告)号：US09054652B2
公开(公告)日：2015-06-09
申请号：US14044385
申请日：2013-10-02
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Glenn Schedeen , Sandeep Mehta
CPC classification number: H03F1/3247 , H03F1/02 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/213 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3227 , H04B1/0475 , H04B1/40 , H04B2001/0416 , H04B2001/045
Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1−Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform, and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
Abstract translation: 通过确定由整数T1表示的粗略时间延迟来增强RF功率放大器的互调性能; 确定RF功率放大器的发射信号波形的参考点; 将波形移位一组包括从（T1-Xd）到（T1 + Xd）的多个非整数分数步长的偏移量，其中T1是整数，Xd是用于定义分数步长的非整数分数步长值 整数T1使得非整数分数步骤在正方向和负方向上进行; 将发送的信号波形与反馈信号波形相关，以获得每个相应分数步骤的相应相关值; 通过选择具有最高各自的相关值的分数步骤来获得精确的分数延迟值; 将所获得的正确分数延迟值应用于所发送的信号波形以提供经补偿的发送信号波形，以及将经补偿的发送信号波形与反馈信号波形组合以减少RF功率放大器的至少一个互调乘积。
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公开(公告)号：US20150139359A1
公开(公告)日：2015-05-21
申请号：US14548129
申请日：2014-11-19
Applicant: RF Micro Devices, Inc.
Inventor： Andrew F. Folkmann , Nadim Khlat
CPC classification number: H04L25/08 , H03F1/0211 , H03F1/0261 , H03F1/0266 , H03F1/3247 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2201/3215 , H03F2201/3227
Abstract: A baseband PA predistortion module, which includes a baseband combiner, a baseband PA correction circuit, and a baseband filter, is disclosed. The baseband PA correction circuit replicates behavior of an RF PA by processing a modulation data signal to provide a predistortion data signal. The behavior of the RF PA includes distortion. The modulation data signal is representative of an RF input signal to an RF PA and the predistortion data signal is representative of a correction needed at an output of the RF PA. The baseband filter receives and filters the predistortion data signal to provide a reduced predistortion data signal, such that a low frequency content of the reduced predistortion data signal is less than a low frequency content of the predistortion data signal. The baseband combiner receives and combines the modulation data signal and the reduced predistortion data signal to provide a baseband transmit signal.
Abstract translation: 公开了一种基带PA预失真模块，其包括基带组合器，基带PA校正电路和基带滤波器。 基带PA校正电路通过处理调制数据信号来复制RF PA的行为以提供预失真数据信号。 RF PA的行为包括失真。 调制数据信号表示到RF PA的RF输入信号，并且预失真数据信号表示在RF PA的输出处所需的校正。 基带滤波器接收并过滤预失真数据信号以提供减少的预失真数据信号，使得减少的预失真数据信号的低频内容小于预失真数据信号的低频内容。 基带组合器接收并组合调制数据信号和减少的预失真数据信号以提供基带发射信号。
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39.发明申请公开(公告)号：US20150091643A1
公开(公告)日：2015-04-02
申请号：US14044385
申请日：2013-10-02
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Glenn Schedeen , Sandeep Mehta
CPC classification number: H03F1/3247 , H03F1/02 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/213 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3227 , H04B1/0475 , H04B1/40 , H04B2001/0416 , H04B2001/045
Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1−Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform, and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
Abstract translation: 通过确定由整数T1表示的粗略时间延迟来增强RF功率放大器的互调性能; 确定RF功率放大器的发射信号波形的参考点; 将波形移位一组包括从（T1-Xd）到（T1 + Xd）的多个非整数分数步长的偏移量，其中T1是整数，Xd是用于定义分数步长的非整数分数步长值 整数T1使得非整数分数步骤在正方向和负方向上进行; 将发送的信号波形与反馈信号波形相关，以获得每个相应分数步骤的相应相关值; 通过选择具有最高各自的相关值的分数步骤来获得精确的分数延迟值; 将所获得的正确分数延迟值应用于所发送的信号波形以提供经补偿的发送信号波形，以及将经补偿的发送信号波形与反馈信号波形组合以减少RF功率放大器的至少一个互调乘积。
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40.发明申请公开(公告)号：US20150022269A1
公开(公告)日：2015-01-22
申请号：US14377959
申请日：2012-02-22
Applicant: Tao Huang , Changjiang Yang , Xiang Zeng
Inventor： Tao Huang , Changjiang Yang , Xiang Zeng
CPC classification number: H03F3/19 , H03F1/02 , H03F1/3247 , H03F3/24 , H03F2200/451 , H03F2201/3215 , H03F2201/3227 , H04B2201/70706 , H04L27/2623 , H04L27/368
Abstract: A method for controlling an input signal of a power amplifier is provided. The method comprise applying CFR to the input signal to obtain a processed input signal; determining a minimum CFR threshold; comparing the peak power of the power amplifier and an allowable peak power; and if the peak power is below the allowable peak power, determining a final CFR threshold by increasing the minimum CFR threshold, or if the peak power is not below the allowable peak power, reducing the average output power until peak power reaches the allowable peak power.
Abstract translation: 提供一种用于控制功率放大器的输入信号的方法。 该方法包括将CFR应用于输入信号以获得经处理的输入信号; 确定最小CFR阈值; 比较功率放大器的峰值功率和允许的峰值功率; 并且如果峰值功率低于容许峰值功率，则通过增加最小CFR阈值来确定最终CFR阈值，或者如果峰值功率不低于允许峰值功率，则降低平均输出功率，直到峰值功率达到允许峰值功率 。
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